Contents Wiring diagrams Section: Mechanical All sections

Engine Mechanical: Other Nissan Maxima A33

Mechanical 128 illustrations ~4553 words

Fuel Damper

Tighten fuel damper to 2.9 to 3.8 N.m (0.3 to 0.39 kg-m, 26.0 to 33.9 in-lb).

Scheme 147

Scheme 147: Fuel Damper
  1. Tighten screws evenly several times to have the fuel damper tightened at the specified torque.
  2. Always replace O-ring with new ones.
  3. Lubricate O-ring with new engine oil.

Scheme 148

Scheme 148: Electronic Control Throttle Actuator
  1. Tighten in numerical order shown in the figure. Tighten all bolts to 7.2 to 9.6 N.m (0.74 to 0.97 kg-m, 64 to 84 in-lb). CAUTION: Perform Throttle Valve Closed Position Learning when harness connector of electronic throttle control actuator is disconnected. Refer to «THROTTLE VALVE CLOSED POSITION LEARNING»(ref-135506-S18977797072002080600000) . Perform Idle Air Volume Learning when electronic throttle control actuator is replaced. Refer to «IDLE AIR VOLUME LEARNING»(ref-135506-S11723769492002022200000) .

Scheme 149

Scheme 149: Intake Manifold Upper Collector
  1. Tighten in numerical order shown in the figure. Tighten all bolts to 17.6 to 21.6 N.m (1.8 to 2.2 kg-m, 13 to 15 ft-lb).

Intake Manifold Lower Collector

Tighten bolts and nuts to 17.6 to 21.6 N.m (1.8 to 2.2 kg-m, 13 to 15 ft-lb) in numerical order shown in the figure.

Scheme 150

Scheme 150: Intake Manifold Lower Collector

Scheme 151

Scheme 151: Power Valve
  1. Tighten in numerical order shown in the figure. Tighten all bolts to 17.6 to 21.6 N.m (1.8 to 2.2 kg-m, 13 to 15 ft-lb).

Exhaust Manifold

Tighten nuts to 28.4 to 33.3 N.m (2.9 to 3.3 kg-m, 21 to 24 ft-lb) in numerical order shown in the figure.

Scheme 152

Scheme 152: Exhaust Manifold

Scheme 153

Scheme 153

Scheme 154

Scheme 154: MEASUREMENT OF COMPRESSION PRESSURE

Scheme 155

Scheme 155

Scheme 156

Scheme 156

Scheme 157

Scheme 157
  1. Warm up engine.
  2. Turn ignition switch OFF.
  3. Release fuel pressure. Refer to «RELIEVING FUEL PRESSURE»(ref-135812-S14775277762002022500000) .
  4. Disconnect ignition coil with power transistor harness connectors, then remove ignition coils.
  5. Remove all spark plugs.
  6. Remove fuse for fuel injector.
  7. Attach a compression tester to No. 1 cylinder.
  8. Depress accelerator pedal fully to keep throttle valve wide open.
  9. Crank engine and record highest gauge indication.
  10. Repeat the measurement on each cylinder as shown above. Always use a fully-charged battery to obtain specified engine speed.
  11. If compression in one or more cylinders is low: Pour a small amount of engine oil into cylinders through spark plug holes. Retest compression. If adding oil helps compression, piston rings may be worn or damaged. If so, replace piston rings after checking piston. If pressure stays low, a valve may be sticking or seating improperly. Inspect and repair valve and valve seat. (Refer to SDS, «VALVE»(ref-159268-S18913227322005081400000) and «VALVE SEAT»(ref-159268-S27079751952005081400000) .) If valve or valve seat is damaged excessively, replace them. If compression stays low in two cylinders that are next to each other: The cylinder head gasket may be leaking, or Both cylinders may have valve component damage. Inspect and repair as necessary.

Scheme 158

Scheme 158: OIL PAN

Position For Applying Liquid Gasket

Refer to Liquid Gasket Application Procedure in PRECAUTIONS .

Scheme 159

Scheme 159: Position For Applying Liquid Gasket
  1. Before installation, wipe off the protruding sealant. CAUTION: After removing timing chain, do not turn crankshaft and camshaft separately, or valves will strike piston heads. When installing camshafts, chain tensioners, oil seals, or other sliding parts, lubricate contacting surfaces with new engine oil. Apply new engine oil to bolt threads and seat surfaces when installing cylinder head, camshaft sprockets, crankshaft pulley and camshaft brackets. Before disconnecting fuel hose, release fuel pressure. Refer to «FUEL PRESSURE RELEASE»(ref-135504-S01957061042002022200000) . When removing the oil pans, oil pump assembly and timing chain from engine, first remove the crankshaft position sensor (POS) from the assembly. Be careful not to damage sensor edges. Do not spill engine coolant on drive belts.

Scheme 160

Scheme 160: REMOVAL

Scheme 161

Scheme 161

Scheme 162

Scheme 162

Scheme 163

Scheme 163

Scheme 164

Scheme 164

Scheme 165

Scheme 165

Scheme 166

Scheme 166

Scheme 167

Scheme 167

Scheme 168

Scheme 168

Scheme 169

Scheme 169

Scheme 170

Scheme 170

Scheme 171

Scheme 171

Scheme 172

Scheme 172

Scheme 173

Scheme 173

Scheme 174

Scheme 174

Scheme 175

Scheme 175

Scheme 176

Scheme 176

Scheme 177

Scheme 177

Scheme 178

Scheme 178

Scheme 179

Scheme 179

Scheme 180

Scheme 180

Scheme 181

Scheme 181

Scheme 182

Scheme 182

Scheme 183

Scheme 183

Scheme 184

Scheme 184

Scheme 185

Scheme 185
  1. Drain engine oil.
  2. Release fuel pressure. Refer to «FUEL PRESSURE RELEASE»(ref-135504-S01957061042002022200000) .
  3. Drain coolant by removing cylinder block drain plugs. Refer to CHANGING ENGINE COOLANT .
  4. Remove ornament cover.
  5. Remove air duct to intake manifold, collector, PCV hose, vacuum hoses, fuel hoses, wires, harness, connectors and so on.
  6. Remove the following. Water hoses EVAP canister purge hose PCV hose PCV valve Water outlet
  7. Remove intake manifold upper and lower collectors loosening bolts and nuts in reverse order of tightening. Refer to «TIGHTENING PROCEDURES»(ref-159268-S05298752482005081400000) .
  8. Remove RH and LH ignition coils.
  9. Remove fuel tube assembly. Refer to FUEL TUBE .
  10. Remove intake manifold loosening bolts and nuts in reverse order of tightening. Refer to «TIGHTENING PROCEDURES»(ref-159268-S05298752482005081400000) .
  11. Remove RH and LH intake valve timing control solenoid valves.
  12. Remove RH and LH rocker covers from cylinder head. Loosen bolts in numerical order shown in the figure.
  13. Remove engine undercover.
  14. Remove front RH wheel and engine side cover.
  15. Remove drive belts and idler pulley bracket.
  16. Remove power steering oil pump belt and power steering oil pump assembly. Refer to COMPONENTS .
  17. Remove crankshaft position sensor (POS).
  18. Set No. 1 piston at TDC on the compression stroke by rotating crankshaft. Check that intake and exhaust cam nose on No. 1 cylinder are installed as shown. If not, turn the crankshaft one revolution (360°) and align as above.
  19. Loosen crankshaft pulley bolt. (At this time remove oil pan rear cover plate and set a suitable tool to ring gear so that crankshaft cannot rotate.) Be careful not to damage the signal plate teeth.
  20. Remove crankshaft pulley with a suitable puller.
  21. Remove intake valve timing control valve covers. Loosen bolts in reverse order shown in the figure. In the cover, the shaft is engaged with the center hole of the intake camshaft sprocket. Remove it straight out until the engagement comes off.
  22. Remove air conditioner compressor and bracket. Refer to «COMPRESSOR»(ref-231077-S02254549042006050300000) .
  23. Remove front exhaust tube and its support.
  24. Hang engine at right and left side engine slingers with a suitable hoist. Refer to «REMOVAL AND INSTALLATION»(ref-159268-S15429585682005081400000) .
  25. Remove right side engine mounting, mounting bracket and nuts. Refer to «REMOVAL AND INSTALLATION»(ref-159268-S15429585682005081400000) .
  26. Remove center member assembly.
  27. Remove upper and lower oil pans. Refer to «REMOVAL»(ref-159268-S07230537042005081400000) .
  28. Remove water pump cover.
  29. Remove front timing chain case bolts. Loosen bolts in reverse order shown in the figure.
  30. Remove front timing chain case. Do not scratch sealing surfaces.
  31. Remove timing chain tensioner cover from front timing chain case.
  32. Remove front oil seal from front timing chain case. Refer to «FRONT OIL SEAL»(ref-159268-S26239110322005081400000) .
  33. Remove internal chain guide.
  34. Remove timing chain tensioner and slack side chain guide. Remove chain tensioner as follows. Pull lever down, and release plunger stopper tab. Plunger stopper tab can be pushed up to release (coaxial structure with lever). Insert stopper pin into tensioner body hole to fix lever, and keep the tab released. In figure, Allen wrench [2.5 mm (0.098 in)] is used for stopper pin as an example. Insert plunger into tensioner body by pressing slack guide. Keep slack guide pressed, and fix it by pushing stopper pin through lever hole and body hole. Remove mounting bolts, and remove chain tensioner.
  35. Attach a suitable stopper pin to RH and LH camshaft chain tensioners. (For secondary timing chains)
  36. Remove intake and exhaust camshaft sprocket bolts. Apply paint to timing chain and camshaft sprockets for alignment during installation. Secure the hexagonal portion of the camshaft using a spanner to loosen mounting bolts.
  37. Remove primary and secondary timing chains with camshaft sprockets. Intake camshaft sprocket is two-for-one structure of primary and secondary sprockets. Handle intake camshaft sprocket, taking care of the following. CAUTION: Avoid impact. Do not disassemble (Never loosen bolts A and B).
  38. Remove chain tension guide and crankshaft sprocket.
  39. Remove rear timing chain case as follows. Loosen mounting bolts in reverse order shown in figure, and remove them. Disconnect liquid gasket applied portion using seal cutter (special service tool: KV10111100) or an equivalent tool. Then remove rear timing chain case.
  40. Remove RH and LH camshaft chain tensioners from cylinder head as follows. Remove No. 1 camshaft brackets. Refer to «REMOVAL»(ref-159268-S13459737342005081400000) . Remove chain tensioners with stopper pin attached. CAUTION: Do not remove plate metal cover of oil passage. After removing chain case, do not apply any load which affects flatness.
  41. Use a scraper to remove all traces of liquid gasket from front timing chain case. Remove old liquid gasket from the bolt hole and thread.
  42. Use a scraper to remove all traces of liquid gasket from water pump cover and intake valve timing control solenoid valve covers.

Cylinder Head Distortion

Clean surface of cylinder head.

Use a reliable straightedge and feeler gauge to check the flatness of cylinder head surface.

Scheme 186

Scheme 186: Cylinder Head Distortion

Check along six positions shown in the figure.

  1. Head surface flatness: Limit 0.1 mm (0.004 in)

If beyond the specified limit, resurface or replace it.

The limit for cylinder head resurfacing is determined by the cylinder block resurfacing.

Resurfacing limit

  1. Amount of cylinder head resurfacing is "A".
  2. Amount of cylinder block resurfacing is "B". The maximum limit: A + B = 0.2 mm (0.008 in)

After resurfacing cylinder head, check that camshaft rotates freely by hand. If resistance is felt, cylinder head must be replaced.

Nominal cylinder head height

  1. 126.3 - 126.5 mm (4.972 - 4.980 in)

Camshaft Visual Check

Check camshaft for scratches, seizure and wear.

Scheme 187

Scheme 187: Camshaft Runout
  1. Measure camshaft runout at A and B as shown in the figure. Runout (Total indicator reading): Limit 0.05 mm (0.0020 in)
  2. If it exceeds the limit, replace camshaft.

Scheme 188

Scheme 188: Camshaft Cam Height
  1. Measure camshaft cam height. Standard cam height: Intake and exhaust 44.865 - 45.055 mm (1.7763 - 1.7738 in) Cam wear limit: 0.2 mm (0.008 in)
  2. If wear is beyond the limit, replace camshaft.

Scheme 189

Scheme 189: Camshaft Journal Clearance

Scheme 190

Scheme 190
  1. Install camshaft bracket and tighten bolts to the specified torque.
  2. Measure inner diameter "A" of camshaft bearing. Standard inner diameter: No. 1: 26.000 - 26.021 mm (1.0236 - 1.0244 in) No. 2, 3, 4: 23.500 - 23.521 mm (0.9252 - 0.9260 in)
  3. Measure outer diameter of camshaft journal. Standard outer diameter: No. 1: 25.935 - 25.955 mm (1.0211 - 1.0218 in No. 2, 3, 4: 23.445 - 23.465 mm (0.9230 - 0.9238 in)
  4. If clearance exceeds the limit, replace camshaft and/or cylinder head. Camshaft journal clearance: Standard No. 1: 0.045 - 0.086 mm (0.0018 - 0.0034 in) No. 2, 3, 4: 0.035 - 0.076 mm (0.0014 - 0.0030 in) Limit 0.15 mm (0.0059 in)

Scheme 191

Scheme 191: Camshaft End Play
  1. Install camshaft in cylinder head.
  2. Measure camshaft end play. Camshaft end play: Standard 0.115 - 0.188 mm (0.0045 - 0.0074 in) Limit 0.24 mm (0.0094 in)

Scheme 192

Scheme 192: Camshaft Sprocket Runout
  1. Install sprocket on camshaft.
  2. Measure camshaft sprocket runout. Runout (Total indicator reading): Less than 0.15 mm (0.0059 in)
  3. If it exceeds the limit, replace camshaft sprocket.

Scheme 193

Scheme 193: Valve Guide Clearance

Scheme 194

Scheme 194
  1. Measure valve deflection as shown in the figure. (Valve and valve guide mostly wear in this direction.) Valve deflection limit (Dial gauge reading): Intake 0.24 mm (0.0094 in) Exhaust 0.28 mm (0.0110 in)
  2. If it exceeds the limit, check valve to valve guide clearance, Measure valve stem diameter and valve guide inner diameter. Check that clearance is within specification. Valve to valve guide clearance limit: Intake 0.08 mm (0.0031 in) Exhaust 0.1 mm (0.004 in) If it exceeds the limit, replace valve or valve guide.

Scheme 195

Scheme 195: Valve Guide Replacement

Scheme 196

Scheme 196

Scheme 197

Scheme 197

Scheme 198

Scheme 198
  1. To remove valve guide, heat cylinder head to 110 to 130°C (230 to 266°F) by soaking in heated oil.
  2. Drive out valve guide with a press [under a 20 kN (2 ton, 2.2 US ton, 2.0 Imp ton) pressure] or hammer and suitable tool.
  3. Ream cylinder head valve guide hole. Valve guide hole diameter (for service parts): 10.175 - 10.196 mm (0.4006 - 0.4014 in)
  4. Heat cylinder head to 110 to 130°C (230 to 266°F) and press service valve guide onto cylinder head. Projection "L": 12.6 - 12.8 mm (0.496 - 0.504 in)
  5. Ream valve guide. Finished size: 6.000 - 6.018 mm (0.2362 - 0.2369 in)

Valve Seats

Check valve seats for any evidence of pitting at valve contact surface, and reseat or replace if it has worn out excessively.

Scheme 199

Scheme 199: Valve Seats
  1. Before repairing valve seats, check valve and valve guide for wear. If they have worn, replace them. Then correct valve seat.
  2. Use both hands to cut uniformly.

Scheme 200

Scheme 200: Replacing Valve Seat For Service Parts

Scheme 201

Scheme 201

Scheme 202

Scheme 202
  1. Bore out old seat until it collapses. Boring should not continue beyond the bottom face of the seat recess in cylinder head. Set the machine depth stop to ensure this.
  2. Ream cylinder head recess for service valve seat. Oversize [0.5 mm (0.020 in)]: Intake 38.500 - 38.516 mm (1.5157 - 1.5164 in) Exhaust 32.700 - 32.716 mm (1.2874 - 1.2880 in) Be sure to ream in circles concentric to the valve guide center. This will enable valve seat to fit correctly.
  3. Heat cylinder head to 110 to 130°C (230 to 266°F) by soaking in heated oil.
  4. Press fit valve seat until it seats on the bottom.
  5. Cut or grind valve seat using suitable tool to the specified dimensions as shown in SDS ( «VALVE SEAT»(ref-159268-S27079751952005081400000) ).
  6. After cutting, lap valve seat with abrasive compound.
  7. Check valve seating condition. Seat face angle "alpha": 45°15' - 45°45' Contacting width "W": Intake 1.09 - 1.31 mm (0.0429 - 0.0516 in) Exhaust 1.29 - 1.51 mm (0.0508 - 0.0594 in)
  8. Use a depth gauge to measure the distance between the mounting surface of the cylinder head spring seat and the valve stem end. If the distance is shorter than specified, repeat step 5 above to adjust it. If it is longer, replace the valve seat with a new one. Valve seat resurface limit "L": Intake 41.07 - 41.67 mm (1.6169 - 1.6405 in) Exhaust 41.00 - 41.60 mm (1.6142 - 1.6378 in)

Valve Dimensions

Check dimensions of each valve. For dimensions, refer to SDS ( VALVE ).

Scheme 203

Scheme 203: Valve Dimensions

When valve head has been worn down to 0.5 mm (0.020 in) in margin thickness, replace valve.

Grinding allowance for valve stem tip is 0.2 mm (0.008 in) or less.

Scheme 204

Scheme 204: Squareness
  1. Measure dimension "S". Out-of-square "S": Less than 2.0 mm (0.079 in)
  2. If it exceeds the limit, replace spring.

Pressure

Check valve spring pressure at specified spring height.

Scheme 205

Scheme 205: Pressure

Pressure

  1. Standard 196 N (20.0 kg, 44.1 Ib) at height 37.0 mm (1.457 in)
  2. Limit More than 433 N (44.2 kg, 97.3 Ib) at height 27.8 mm (1.094 in)

If it exceeds the limit, replace spring.

Scheme 206

Scheme 206: Valve Lifter

Scheme 207

Scheme 207

Scheme 208

Scheme 208
  1. Check contact and sliding surfaces for wear or scratches.
  2. Check diameter of valve lifter and valve lifter guide bore. Valve lifter outer diameter: 33.977 - 33.987 mm (1.3377 - 1.3381 in) Lifter guide bore diameter: 34.000 - 34.016 mm (1.3386 - 1.3392 in)

Scheme 209

Scheme 209: ASSEMBLY
  1. Install valve component parts. Always use new valve oil seal. Refer to «VALVE OIL SEAL»(ref-159268-S35889804472005081400000) . Before installing valve oil seal, install valve spring seat. Install valve spring (uneven pitch type) with its narrow pitch side toward cylinder head side (paint mark). After installing valve component parts, tap valve stem tip with plastic hammer to assure a proper fit.

Scheme 210

Scheme 210: INSTALLATION

Scheme 211

Scheme 211

Scheme 212

Scheme 212

Scheme 213

Scheme 213

Scheme 214

Scheme 214

Scheme 215

Scheme 215

Scheme 216

Scheme 216

Scheme 217

Scheme 217

Scheme 218

Scheme 218

Scheme 219

Scheme 219

Scheme 220

Scheme 220

Scheme 221

Scheme 221

Scheme 222

Scheme 222

Scheme 223

Scheme 223

Scheme 224

Scheme 224

Scheme 225

Scheme 225

Scheme 226

Scheme 226

Scheme 227

Scheme 227

Scheme 228

Scheme 228

Scheme 229

Scheme 229

Scheme 230

Scheme 230

Scheme 231

Scheme 231

Scheme 232

Scheme 232
  1. Before installing rear timing chain case, remove old liquid gasket from mating surface using a scraper. Also remove old liquid gasket from mating surface of cylinder block. Remove old liquid gasket from the bolt hole and threads.
  2. Before installing cam bracket, remove old liquid gasket from mating surface using a scraper.
  3. Before installing the cylinder head gasket, be sure that No. cylinder is at TDC. At this time, the crankshaft key should face toward the right bank.
  4. Install cylinder heads with new gaskets. Do not rotate crankshaft and camshaft separately, or valves will strike piston heads. CAUTION: Cylinder head bolts are tightened by plastic zone tightening method. Whenever the size difference between d1 and d2 exceeds the limit, replace them with new ones. Limit (d1 - d2): 0.11 mm (0.0043 in) Lubricate threads and seat surfaces of the bolts with new engine oil.
  5. Install cylinder head outside bolts. Tightening procedure: Tighten all bolts to 98 N.m (10 kg-m, 72 ft-lb). Completely loosen all bolts. Tighten all bolts to 34.3 to 44.1 N.m (3.5 to 4.4 kg-m, 26 to 32 ft-lb). Turn all bolts 90 to 95 degrees clockwise. Turn all bolts 90 to 95 degrees clockwise. Tighten in numerical order shown in the figure.
  6. Install camshaft chain tensioners on both sides of cylinder head.
  7. Install exhaust and intake camshafts and camshaft brackets. Intake camshaft has a drill mark on camshaft sprocket mounting flange. Install it on the intake side. Identification marks are present on camshafts. Position camshaft RH exhaust camshaft dowel pin at about 10 o'clock LH exhaust camshaft dowel pin at about 2 o'clock
  8. Before installing camshaft brackets, apply sealant to mating surface of No. 1 camshaft bracket. Refer to «POSITION FOR APPLYING LIQUID GASKET»(ref-159268-S09317372062005081400000) . Use Genuine RTV silicone sealant or equivalent. Refer to «RECOMMENDED CHEMICAL PRODUCTS AND SEALANTS»(ref-183533-S20212108872005081400000) . Install camshaft brackets in their original positions. Align stamp mark as shown in the figure. If any part of valve assembly or camshaft is replaced, check valve clearance according to reference data. After completing assembly check valve clearance. Refer to «CHECKING»(ref-159268-S25393214472005081400000) and «ADJUSTING»(ref-159268-S05798978942005081400000) . Reference data valve clearance (Cold): Intake 0.26 - 0.34 mm (0.010 - 0.013 in) Exhaust 0.29 - 0.37 mm (0.011 - 0.015 in) Lubricate threads and seat surfaces of camshaft bracket bolts with new engine oil before installing them. Tighten the camshaft brackets in the following steps.
  9. Install intake valve timing control solenoid valves.
  10. Install O-rings to cylinder block.
  11. Install O-rings to cylinder head.
  12. Apply sealant to the hatched portion of rear timing chain case. Refer to «POSITION FOR APPLYING LIQUID GASKET»(ref-159268-S09317372062005081400000) . Apply continuous bead of liquid gasket to mating surface of rear timing chain case. Before installation, wipe off the protruding sealant.
  13. Align rear timing chain case with dowel pins, then install on cylinder head and block.
  14. Tighten rear chain case bolts. Tighten bolts in numerical order shown in the figure with smaller torque than specified. Tighten bolts to the specified torque repeating above step a.
  15. Reinstall all removed parts in reverse order of removal.

Checking

Check valve clearance while engine is cold and not running.

Scheme 233

Scheme 233: Checking

Scheme 234

Scheme 234

Scheme 235

Scheme 235

Scheme 236

Scheme 236

Scheme 237

Scheme 237

Scheme 238

Scheme 238

Scheme 239

Scheme 239

Scheme 240

Scheme 240

Scheme 241

Scheme 241
  1. Remove ornament cover.
  2. Remove air duct with air cleaner case, collectors, hoses, wires, harnesses, connectors and so on.
  3. Remove intake manifold collectors.
  4. Remove ignition coils and spark plugs.
  5. Remove RH and LH rocker covers.
  6. Set No. 1 cylinder at TDC on its compression stroke. Align pointer with TDC mark on crankshaft pulley. Check that valve lifters on No. 1 cylinder are loose and valve lifters on No. 4 are tight. If not, turn crankshaft one revolution (360°) and align as above.
  7. Check only those valves shown in the figure. Using a feeler gauge, measure clearance between valve lifter and camshaft. Record any valve clearance measurements which are out of specification. They will be used later to determine the required replacement adjusting shim. Valve clearance for checking (Cold): Intake 0.26 - 0.34 mm (0.010 - 0.013 in) Exhaust 0.29 - 0.37 mm (0.011 - 0.015 in)
  8. Turn crankshaft 240° and align as above.
  9. Set No. 3 cylinder at TDC on its compression stroke.
  10. Check only those valves shown in the figure.
  11. Turn crankshaft 240° and align as above.
  12. Set No. 5 cylinder at TDC on its compression stroke.
  13. Check only those valves shown in the figure.
  14. If all valve clearances are within specification, install the following parts. If they are out of specification, adjust the valve clearances. Intake manifold collectors RH and LH rocker covers All spark plugs All ignition coils

Adjusting

Adjust valve clearance while engine is cold.

Perform adjustment by selecting head thickness of valve lifter (Adjusting shims are not used).

Scheme 242

Scheme 242: Adjusting

Scheme 243

Scheme 243

Scheme 244

Scheme 244

Scheme 245

Scheme 245
  1. Remove camshaft.
  2. Remove valve lifter at location where measured value is outside standard.
  3. Measure center thickness of removed valve lifter with micrometer.
  4. Use equation below to calculate valve lifter thickness for replacement. Valve lifter thickness calculation: t = t1 + (C1 - C2) t = Thickness of replacement valve lifter t1 = Thickness of removed valve lifter C1 = Measured valve clearance C2 = Standard valve clearance Valve lifter thickness: Intake: 0.30 mm (0.012 in) Exhaust: 0.33 mm (0.013 in) Thickness of new valve lifter can be identified by stamp mark on reverse side (inside cylinder). Available thickness of valve lifter (Factory setting): 7.88 - 8.36 mm (0.3102 - 0.3291 in) [in 0.02 mm (0.0008 in) step] in 25 sizes (Intake/Exhaust)
  5. Install selected valve lifter.
  6. Install camshaft.
  7. Rotate crankshaft a few turns by hand.
  8. Confirm that valve clearance is within standard.
  9. After repair, confirm that valve clearance is within standard with engine warmed-up. Valve clearance

Scheme 246

Scheme 246: REMOVAL AND INSTALLATION
WARNINGSituate vehicle on a flat and solid surface. Place chocks at front and back of rear wheels. Do not remove engine until exhaust system has completely cooled off. Otherwise, you may burn yourself and/or fire may break out in fuel line. For safety during subsequent steps, the tension of wires should be slackened against the engine. Before disconnecting fuel hose, release fuel pressure from fuel line. Refer to RELIEVING FUEL PRESSURE . Before removing front axle from transaxle, place safety stands under designated front supporting points. Refer to GARAGE JACK AND SAFETY STAND . Be sure to hoist engine and transaxle in a safe manner. For engines not equipped with engine slingers, attach proper slingers and bolts described in PARTS CATALOG.
CAUTIONWhen lifting engine, be careful not to strike adjacent parts, especially the following: Accelerator wire casing, brake lines, and brake master cylinder. In hoisting the engine, always use engine slingers in a safe manner. In removing drive shaft, be careful not to damage grease seal of transaxle. Before separating engine and transaxle, remove the crankshaft position sensor (POS) from the assembly. Always pay extra attention not to damage edge of crankshaft position sensor (POS) or ring gear teeth.

Scheme 247

Scheme 247: Removal

Scheme 248

Scheme 248

Scheme 249

Scheme 249

Scheme 250

Scheme 250

Scheme 251

Scheme 251

Scheme 252

Scheme 252

Scheme 253

Scheme 253
  1. Remove engine undercover and hood.
  2. Drain coolant from both cylinder block and radiator. Refer to «COOLING SYSTEM BLEEDING»(ref-166010-S16304447282004091000000) .
  3. Remove vacuum hoses, fuel hoses, wires, harnesses, connectors and so on.
  4. Remove front exhaust tubes, ball joints and drive shafts.
  5. Remove radiator and fans.
  6. Remove drive belts.
  7. Remove alternator, compressor and power steering oil pump from engine.
  8. Set a suitable transmission jack under transaxle. Hoist engine with engine slinger.
  9. Remove LH engine mounting.
  10. Disconnect control rod and support rod from transaxle (M/T model).
  11. Disconnect control cable from transaxle (A/T model).
  12. Remove RH engine mounting.
  13. Remove center member and then slowly lower transmission jack.
  14. Remove engine with transaxle as shown.

Flywheel/Drive Plate Runout

Runout (Total indicator reading)

  1. Flywheel (M/T model) Refer to «FLYWHEEL DEFLECTION»(ref-159268-S01994955582005081400000) .
  2. Drive plate (A/T model) Less than 0.15 mm (0.0059 in)

Scheme 254

Scheme 254

Movement Amount Of Flywheel (M/T Models)

Note. Inspection for double mass flywheel only. Do not disassemble double mass flywheel.

Scheme 255

Scheme 255: Flywheel Deflection
  1. Measure deflection of flywheel contact surface to the clutch with a dial gauge.
  2. Measure deflection at 210 mm (8.27 in) dia. Standard: 0.45 mm (0.0177 in) or less Limit: 1.3 mm (0.051 in) or less
  3. When measured value exceeds the limit, replace it with a new one.

Movement Amount In Radial (Rotation) Direction

  1. Check the movement amount in the following procedure.

Scheme 256

Scheme 256
  1. Install a bolt to clutch cover mounting hole, and place a torque wrench on the extended line of the flywheel center line. Tighten bolt at a force of 9.8 N.m (1 kg-m, 87 in-lb) to keep it from loosening.
  2. Put a mating mark on circumference of the two flywheel masses without applying any load (Measurement standard points).
  3. Apply a force of 9.8 N.m (1 kg-m, 87 in-lb) in each direction, and mark the movement amount on the mass on the transmission side.
  4. Measure dimensions of movement amounts A and B on circumference of the flywheel on the transmission side. Standard: 24 mm (0.94 in) or less When measured value is outside the standard, replace flywheel.

Scheme 257

Scheme 257: Piston

Scheme 258

Scheme 258

Scheme 259

Scheme 259
  1. Install new snap ring on one side of piston pin hole.
  2. Heat piston to 60 to 70°C (140 to 158°F) and assemble piston, piston pin, connecting rod and new snap ring. Align the direction of piston and connecting rod. Numbers stamped on connecting rod and cap correspond to each cylinder. After assembly, make sure connecting rod swings smoothly.
  3. Set piston rings as shown. CAUTION: When piston rings are not replaced, make sure that piston rings are mounted in their original positions. When replacing piston rings, those without punchmarks present can be mounted with either side up. Align piston rings so that end gaps are positioned as shown in the figure.

Scheme 260

Scheme 260: Oil Jet
  1. Install oil jets. Insert oil jet knock pin into the cylinder block knock pin hole, and tighten the mounting bolts.

Scheme 261

Scheme 261: Crankshaft

Scheme 262

Scheme 262

Scheme 263

Scheme 263

Scheme 264

Scheme 264

Scheme 265

Scheme 265

Scheme 266

Scheme 266

Scheme 267

Scheme 267

Scheme 268

Scheme 268

Scheme 269

Scheme 269

Scheme 270

Scheme 270

Scheme 271

Scheme 271
  1. Set main bearings in their proper positions on cylinder block and main bearing beam. Confirm that correct main bearings are used. Refer to "Inspection" of this section.
  2. Instructions for re-use of main bearing cap bolts. A plastic zone tightening method is used for tightening main bearing cap bolts. Measure d1 and d2 as shown in the figure. d2: Select minimum diameter in the measuring area. If the difference between d1 and d2 exceeds the limit, replace the bolts with new ones. Limit (d1 - d2): 0.11 mm (0.0043 in)
  3. After installing crankshaft, main bearing cap, main bearing beam and bearing cap bolts, tighten bearing cap bolts in numerical order as shown. Make sure that the front mark on the main bearing beam faces the front of the engine. Tightening procedure Tighten all bolts to 32 to 38 N.m (3.3 to 3.9 kg-m, 24 to 28 ft-lb). Turn all bolts 90 to 95 degrees clockwise with angle wrench. Prior to tightening bearing cap bolts, place bearing beam in its proper position by shifting crankshaft in the axial direction. After securing bearing cap bolts, make sure crankshaft turns smoothly by hand. Lubricate threads and seat surfaces of the bolts with new engine oil.
  4. Measure crankshaft end play. Crankshaft end play: Standard 0.10 - 0.25 mm (0.0039 - 0.0098 in) Limit 0.30 mm (0.0118 in) If beyond the limit, replace bearing with a new one.
  5. Install connecting rod bearings in connecting rods and connecting rod caps. Confirm that correct bearings are used.
  6. Install pistons with connecting rods. Install them into corresponding cylinders with Tool. Be careful not to scratch cylinder wall with the connecting rod. Arrange so that front mark on piston head faces toward engine front. Install connecting rod caps. Lubricate threads and seat surfaces with new engine oil. Install so that the cylinder number stamped on the connecting rod agrees with that stamped on cap side. Make sure that front mark on the connecting rod cap faces the front of the engine. Re-use connecting rod cap bolts as follows. Make sure that the bolts can be smoothly screwed-in to the end manually. If not, measure the outer diameter "d" shown in the figure. Outer diameter "d" of connecting rod cap bolt: Standard 7.90 - 8.00 mm (0.3110 - 0.3150 in) Limit 7.75 mm (0.3051 in) Tighten connecting rod cap bolts to the specified torque. Connecting rod cap bolt: (1) Tighten nuts to 19 to 21 N.m (1.9 to 2.1 kg-m, 14 to 15 ft-lb). (2) Turn nuts 90 to 95 degrees clockwise with angle wrench.
  7. Measure connecting rod side clearance. Connecting rod side clearance: Standard 0.20 - 0.35 mm (0.0079 - 0.0138 in) Limit 0.40 mm (0.0157 in) If beyond the limit, replace connecting rod and/or crankshaft.
  8. Install rear oil seal retainer.

Scheme 272

Scheme 272: Replacement of Pilot Bushing (M/T) or Pilot Converter (A/T)

Scheme 273

Scheme 273
  1. Remove pilot converter using tool or suitable tool.
  2. Install pilot bushing or pilot converter as shown.

Drive Plate

Install drive plate.

Scheme 274

Scheme 274: Drive Plate
  1. Install the drive plate and reinforce plate in the direction shown in the figure.
  2. Secure the crankshaft using a ring gear stopper.
  3. Tighten the installation bolts crosswise over several times.

CRANKSHAFT MAIN & CONNECTING ROD BEARINGS

ApplicationIn. (mm)
Crankshaft
End Play
Standard.0039-.0098 (.10-.25)
Service Limit.0118 (.30)
Runout.0039 (.10)
Main Bearings
Journal Diameter
Grade No. A2.3612-2.3612 (59.974-59.975)
Grade No. B2.3611-2.3612 (59.973-59.974)
Grade No. C2.3611-2.3611 (59.972-59.973)
Grade No. D2.3611-2.3611 (59.971-59.972)
Grade No. E2.3610-2.3611 (59.970-59.971)
Grade No. F2.3610-2.3610 (59.969-59.970)
Grade No. G2.3610-2.3609 (59.968-59.969)
Grade No. H2.3609-2.3609 (59.967-59.968)
Grade No. J2.3609-2.3609 (59.966-59.967)
Grade No. K2.3608-2.3609 (59.965-59.966)
Grade No. L2.3608-2.3608 (59.964-59.965)
Grade No. M2.3607-2.3608 (59.963-59.964)
Grade No. N2.3607-2.3607 (59.962-59.963)
Grade No. P2.3607-2.3607 (59.961-59.962)
Grade No. R2.3606-2.3607 (59.960-59.961)
Grade No. S2.3606-2.3606 (59.959-59.960)
Grade No. T2.3605-2.3606 (59.958-59.959)
Grade No. U2.3605-2.3605 (59.957-59.958)
Grade No. V2.3605-2.3605 (59.956-59.957)
Grade No. W2.3604-2.3605 (59.955-59.956)
Grade No. X2.3604-2.3604 (59.954-59.955)
Grade No. Y2.3603-2.3604 (59.953-59.954)
Grade No. 42.3603-2.3603 (59.952-59.953)
Grade No. 72.3603-2.3603 (59.951-59.922)
Journal Out-Of-Round.0001 (.002)
Journal Taper.0001 (.002)
Oil Clearance
Standard.0005-.0012 (.012-.030)
Service Limit.0026 (.065)
Connecting Rod Bearings
Journal Diameter
Grade No. 02.0460-2.0462 (51.968-51.974)
Grade No. 12.0457-2.0460 (51.962-51.968)
Grade No. 22.0445-2.0457 (51.956-51.962)
Journal Out-Of-Round.0001 (.002)
Journal Taper.0001 (.002)
Oil Clearance
Standard.0008-.0018 (.020-.045)
Service Limit.0028 (.070)

CRANKSHAFT MAIN & CONNECTING ROD BEARINGS

CONNECTING RODS

ApplicationIn. (mm)
Bore Diameter
Pin Bore.9441-.9449 (23.980-24.000)
Crankpin Bore2.1654-2.1659 (55.000-55.013)
Center-To-Center Length5.8110-5.8149 (144.15-144.25)
Maximum Bend Per 3.94 In. (100 mm).006 (.15)
Maximum Twist Per 3.94 In. (100 mm).012 (.30)
Side Play
Standard.0079-.0138 (.20-.35)
Service Limit.0157 (.40)

CONNECTING RODS

ENGINE PISTONS, ENGINE PISTON PINS & ENGINE PISTON RINGS

ApplicationIn. (mm)
Pistons
Clearance.0004-.0012 (.010-.030)
Diameter
Grade No. 13.7590-3.7594 (95.480-95.490)
Grade No. 23.7594-3.7598 (95.490-95.500)
Grade No. 33.7598-3.7602 (95.000-95.510)
.008 In. (.20 mm) Oversize3.7669-3.7681 (95.680-95.710)
Pins
Diameter
Grade No. 01.8657-.8659 (21.989-21.995)
Grade No. 02.8659-.8662 (21.995-22.001)
Piston Interference Fit.0001-.0002 (.002-.006)
Rod Bushing Clearance
Standard.0002-.0007 (.005-.017)
Service Limit.0012 (.030)
Rings
No. 1
End Gap.0091-.0130 (.23-.33)
Side Clearance.0016-.0031 (.040-.080)
No. 2
End Gap.0130-.0189 (.33-.48)
Side Clearance.0012-.0028 (.030-.070)
No. 3 (Oil Control)
End Gap.0079-.0315 (.20-.80)
Side Clearance.0006-.0020 (.015-.050)

ENGINE PISTONS, ENGINE PISTON PINS & ENGINE PISTON RINGS

CYLINDER BLOCK

ApplicationIn. (mm)
Cylinder Bore
Standard Diameter
Grade No. 13.7598-3.7602 (95.500-95.510)
Grade No. 23.7602-3.7606 (95.510-95.520)
Grade No. 33.7606-3.7610 (95.520-95.530)
Maximum Taper.0006 (.015)
Maximum Out-Of-Round.0006 (.015)
Maximum Deck Warpage (1).004 (.10)
Main Journal Inner Diameter Grade (Without Bearing)
Journal Diameter
Grade No. A2.5194-2.5194 (63.993-63.994)
Grade No. B2.5194-2.5195 (63.994-63.995)
Grade No. C2.5195-2.5195 (63.995-63.996)
Grade No. D2.5195-2.5196 (63.996-63.997)
Grade No. E2.5196-2.5196 (63.997-63.998)
Grade No. F2.5196-2.5196 (63.998-63.999)
Grade No. G2.5196-2.5197 (63.999-64.000)
Grade No. H2.5197-2.5197 (64.000-64.001)
Grade No. J2.5197-2.5198 (64.001-64.002)
Grade No. K2.5198-2.5198 (64.002-64.003)
Grade No. L2.5198-2.5198 (64.003-64.004)
Grade No. M2.5198-2.5199 (64.004-64.005)
Grade No. N2.5199-2.5199 (64.005-64.006)
Grade No. P2.5199-2.5200 (64.006-64.007)
Grade No. R2.5200-2.5200 (64.007-64.008)
Grade No. S2.5200-2.5200 (64.008-64.009)
Grade No. T2.5200-2.5201 (64.009-64.010)
Grade No. U2.5201-2.5201 (64.010-64.011)
Grade No. V2.5201-2.5202 (64.011-64.012)
Grade No. W2.5202-2.5202 (64.012-64.013)
Grade No. X2.5202-2.5202 (64.013-64.014)
Grade No. Y2.5202-2.5203 (64.014-64.015)
Grade No. 42.5203-2.5203 (64.015-64.016)
Grade No. 72.5203-2.5203 (64.016-64.017)
(1) Maximum resurfacing limit of cylinder block and cylinder head combined is .008 In. (.20).
(1)Maximum resurfacing limit of cylinder block and cylinder head combined is .008 In. (.20).

CYLINDER BLOCK

VALVES & VALVE SPRINGS

ApplicationIn. (mm)
Intake Valves
Face Angle45 Degrees 15 Minutes-45 Degrees 45 Minutes
Head Diameter1.4567-1.4685 (37.00-37.30)
Minimum Margin.020 (.50)
Minimum Length3.7842 (96.12)
Stem Diameter.2348-.2354 (5.965-5.980)
Valve Tip Maximum Refinish.008 (.20)
Exhaust Valves
Face Angle45 Degrees 15 Min.-45 Degrees 45 Min.
Head Diameter1.228-1.240 (31.20-31.50)
Minimum Margin.020 (.50)
Minimum Length3.6870 (93.65)
Stem Diameter.2341-.2346 (5.945-5.960)
Valve Tip Maximum Refinish.008 (.20)
Valve Springs
Free Length (2002-03 Model)1.796 (45.62)
Free Length (2004 Model)1.846 (46.90)
Out-Of-Square.079 (2.00)
Lbs. @ In. (kg @ mm)
Pressure
Standard42.3 @ 1.457 (20.6 @ 37.0)
Service Limit95.8 @1.094 (44.5 @ 28.2)

VALVES & VALVE SPRINGS

CYLINDER HEAD

ApplicationIn. (mm)
Cylinder Head Height (1)4.972-4.980 (126.30-126.50)
Maximum Warpage (2).004 (.10)
Valve Seats
Seat Angle45 Degrees
Seat Width
Exhaust.051-.059 (1.29-1.51)
Intake.043-.052 (1.09-1.31)
Seat Bore (Oversize)
Exhaust1.2873-1.2880 (32.700-32.716)
Intake1.5157-1.5164 (38.500-38.516)
Valve Guides
Cylinder Head Valve Guide Bore I.D.
Standard.3927-.3935 (9.975-9.996)
Service Limit.4006-.4014 (10.175-10.196)
Valve Guide I.D..2362-.2369 (6.000-6.018)
Valve Guide Installed Height.496-.504 (12.60-12.80)
Valve Stem-To-Guide Oil Clearance
Exhaust
Standard.0016-.0029 (.040-.073)
Service Limit.004 (.10)
Intake
Standard.0008-.0021 (.020-.053)
Service Limit.003 (.08)
(1) Measure from cylinder head cover surface to head gasket surface. (2) Maximum resurfacing limit of cylinder block and cylinder head combined is .008 (.20).
(1)Measure from cylinder head cover surface to head gasket surface.
(2)Maximum resurfacing limit of cylinder block and cylinder head combined is .008 (.20).

CYLINDER HEAD

CAMSHAFT

ApplicationIn. (mm)
Bore Diameter
No. 11.0236-1.0244 (26.000-26.021)
No. 2, 3 & 4.9252-.9260 (23.500-.23.521)
End Play
Standard.0045-.0074 (.115-.188)
Service Limit.0094 (.24)
Journal Diameter
No. 11.0211-1.0218 (25.935-25.955)
No. 2, 3 & 4.9230-.9238 (23.445-23.465)
Camshaft Runout
StandardLess Than .0008 (.020)
Service Limit.002 (.05)
Sprocket RunoutLess Than .006 (.15)
Lobe Height
Standard1.7506-1.7581 (44.465-44.655)
Service Limit.008 (.20)
Oil Clearance
Standard
Journal No. 1.0018-.0034 (.045-.086)
Journal No. 2, 3, & 4.0014-.0030 (.035-.076)
Service Limit.0059 (.150)

CAMSHAFT

VALVE LIFTERS

ApplicationIn. (mm)
Bore Diameter1.3386-1.3392 (34.000-34.016)
Lifter Diameter1.3377-1.3381 (33.977-33.987)
Oil Clearance.0010-.0024 (.025-.061)

VALVE LIFTERS