ENGINE CODING
Note. For engine repair procedures not covered in this article, see ENGINE OVERHAUL PROCEDURES - GENERAL INFORMATION article in the GENERAL INFORMATION section.
ENGINE IDENTIFICATION
Engine identification number is located on plate on front left side of engine block, in front of oil filter. The Decal at the right rear side of cylinder head indicates the last three digits of engine part number. The Vehicle Identification Number (VIN) is located on top of instrument panel at lower left of windshield. Engine code is B28F, it is identified by the number 69 as the seventh and eight characters in the VIN.
| Application | Engine Code | VIN Code |
|---|---|---|
| 760 GLE & 780 GLE 2.8L V6 | B280F | 69 |
ENGINE IDENTIFICATION CODES
Scheme 9
- Rotate crankshaft to bring No. 1 piston to TDC. (Scheme 15) In this position, both rocker arms for No. 1 cylinder should have clearance.
- Check and adjust following cylinders for clearance: Intake valves on cylinders 1, 2, and 4; exhaust valves on cylinders 1, 3, and 6. (Scheme 9)
- Rotate crankshaft one full turn, with mark again opposite "0" degree mark. Rocker arms for No. 1 cylinder will not have clearance. Check and adjust following cylinders for clearance: Intake valves on cylinders 3, 5, and 6; exhaust valves on cylinders 2, 4, and 5. (Scheme 9)
| Valve | In. (mm) |
|---|---|
| Intake (1) | .004-.006" (.10-.15 mm) |
| Exhaust (1) | .010-.012" (.25-.30 mm) |
| (1) Cold engine | |
| (1) | Cold engine |
VALVE CLEARANCE SPECIFICATIONS
Removal
- Remove air cleaner, grille, grille crossmember, fan shroud and engine splash guard. Drain engine and transmission oil. Drain cooling system (each side of block) and disconnect all coolant hoses. Disconnect A/C compressor and move aside. DO NOT disconnect A/C hoses.
- Remove radiator. Disconnect throttle cable, speedometer and battery ground cable. Disconnect and mark all electrical connections, hoses, and tubing that will interfere with engine removal.
- Move gear selector to "P" and disconnect kickdown cable at throttle pulley. Drain transmission oil by disconnecting oil filler tube at oil pan.
- Disconnect automatic transmission oil cooler pipes at radiator. Disconnect control rods at transmission. Disconnect solenoid wiring plug below shifter.
- Attach a Crossmember Lifting Cradle (2810) and 2 Lifting Cradle Slings (5100) to engine. Support lifting cradle on engine hoist. Disconnect drive shaft at transmission.
- Disconnect exhaust pipe at joint in front of catalytic converter and remove exhaust pipe from exhaust pipe bracket. Remove rear engine mount and crossmember assembly. Remove nuts from front engine mounts and lift engine/transmission assembly from vehicle.
Installation
To install, reverse removal procedure.
- Disconnect battery ground cable. Release any pressure in fuel tank. Remove air cleaner. Remove air intake duct, oil filler cap and hoses, fuel lines from fuel filter, fuel return pipe and air control valve from inlet manifold.
- Remove spark plug wires from spark plugs, ignition coil and wire holders, and move aside. Remove injectors from cylinder head. Disconnect distributor cap retaining clips from distributor cap.
- Remove vacuum hoses from charcoal filter and intake manifold. Remove front section of intake manifold and plug manifold openings.
- Remove throttle cable, kickdown cable, and cruise control cable (if equipped). Disconnect and move wiring harness aside. Remove bolts from pressure regulator and lay regulator on top of intake manifold.
- Remove intake manifold bolts and intake manifold. Plug ports in cylinder head. From right cylinder head, remove A/C compressor and secure out of way.
- Remove oil dipstick and tube, upper radiator hose, hose between cylinder head and coolant pump, connection to ignition timing sensor, cylinder head ground lead and coolant hose from cylinder head. Remove distributor cap and ignition wires. Turn crankshaft to TDC (cylinder No. 1 firing) and remove distributor.
- Remove intake manifold. From left cylinder head, remove vacuum pump, intake air heater tube, lower radiator hose from coolant pump and hose between coolant pump and cylinder head.
- When removing either cylinder head, remove exhaust crossover pipe flange nuts and exhaust pipe support bolts at transmission. Pry off rubber support rings at center silencer and slide exhaust system to the rear.
- Remove valve cover and cover plate from rear of cylinder head. Using an 8 mm Allen wrench, remove timing gear timing plug from left cylinder head (right cylinder head has cover plate). Remove 4 upper timing gear cover bolts. Using a 10 mm Allen wrench, loosen timing gear sprocket bolt. NOTE: If both cylinder heads are removed, mark rocker arm assemblies to avoid installation interchange.
- Loosen rocker arm shaft assembly bolts in same sequence as tightening and remove rocker arm shaft assembly. Loosen camshaft lock plate and move to one side. Using Chain Tensioner Tool (5213), apply tension to timing chain. NOTE: Timing chain tensioner tool will hold timing chain in stretched position when camshaft is removed. If timing chain is slackened, chain tensioner under timing gear cover will take up chain slack making it impossible to reinstall camshaft.
- Remove camshaft from sprocket (left side bolt can be loosened but not removed). Move camshaft to rear to free it from sprocket. Remove cylinder head bolts. (Scheme 10) Loosen cylinder heads before removing to ensure liners are not release from block. CAUTION: When removing cylinder heads, ensure that cylinder liners do not separate from seals at lower seat. If this happens, coolant can flow into crankcase.
- When removed, place cylinder head on wooden blocks to protect it from damage. Remove gasket and install Cylinder Liner Holders (5093). Use needle nose pliers to remove guide sleeves. When cleaning, remove cylinder holders one at a time. CAUTION: When cleaning, use plastic scraper to prevent scratching. Use compressed air to clean cylinder head bolt holes.
- If both cylinder heads are removed or crankshaft is to be rotated, install timing chain Support Bracket (5105) and remove timing chain tensioner tool. (Scheme 11)
- When replacing cylinder head gasket only, clean gasket surfaces and check for warpage. Clean valve cover. Use a steel rule and feeler gauge to check warpage. Maximum warpage is.002" (.05 mm) over 4" (100 mm) of length. If warpage exceeds measurement, replace cylinder head.
Scheme 10
Scheme 11
Scheme 12
- Install timing chain tensioner tool, and remove timing gear chain support bracket from cylinder block face. Close cylinder block drain cocks. Install guide sleeves and insert a.118" (3 mm) drill bit under each sleeve.
- Remove cylinder liner holders. Install cylinder head gasket. Position cylinder head on block face. Install cylinder head with one bolt and push camshaft into timing gear sprocket. Install timing gear sprocket bolt but DO NOT tighten. NOTE: Ensure camshaft does not catch on locking plate and sprocket fits correctly on camshaft.
- Remove drill bits from under guide sleeves. Position rocker arm shaft assemblies and install cylinder head bolts. Tighten cylinder head bolts in sequence. (Scheme 10)and CYLINDER HEAD TIGHTENING.
- Remove timing chain tensioner tool. Position camshaft locking plate and tighten bolt. Using a 10 mm Allen wrench and screwdriver to hold chain, tighten timing gear sprocket bolt.
- Apply sealer to timing gear cover. Install timing gear cover and replace 4 upper bolts. Using an 8 mm Allen wrench, install timing gear plug on left cylinder head. Install cover plate on right side with a new "O" ring. Install cover plate at rear of cylinder head with new gasket.
- Adjust valve clearance with engine cold. (Scheme 17) Refer to «VALVE CLEARANCE ADJUSTMENT»(/volvo/760/i-1982-1992/remont/mechanical/#28l-v6). Turn crankshaft until No. 1 cylinder is at TDC. Install distributor with rotor pointing toward notch in distributor housing. (Scheme 12)and (Scheme 14).
- Install valve covers and gaskets. Complete reassembly by reversing removal procedure. Check and adjust throttle control cable, ignition timing, idle speed and CO. Cylinder heads must be retightened after initial running of engine.
CYLINDER HEAD TIGHTENING
- Tighten cylinder head bolts in sequence to 43 ft. lbs. (60 N.m). Loosen bolt No. 1 and tighten to 15 ft. lbs. (20 N.m). Angle tighten bolt No. 1 an additional 106 degrees. Repeat this procedure in sequence for all head bolts. (Scheme 10)
- When initial tightening procedure has been completed adjust valve clearance. Warm-up engine to normal operating temperature. Allow engine to cool for a minimum of 2 hours. Angle tighten all head bolts in sequence an additional 45 degrees.
- Remove valve cover and cover plate from rear of cylinder head. Using an 8 mm Allen wrench, remove timing gear timing plug from left cylinder head (right cylinder head has cover plate). Remove upper timing gear cover bolts. Using a 10 mm Allen wrench, loosen timing gear sprocket bolt. NOTE: If both cylinder heads are removed, mark rocker arm assemblies to avoid installation interchange.
- Loosen rocker arm shaft assembly bolts in same sequence as tightening and remove rocker arm shaft assembly. Loosen camshaft lock plate and move to one side. Using timing chain tensioner tool, apply tension to timing chain. (Scheme 11) CAUTION: Timing chain tensioner tool will hold timing chain in stretched position when camshaft is removed. If timing chain is slackened, chain tensioner under timing gear cover will take up chain slack making it impossible to reinstall camshaft.
- Remove camshaft from timing gear sprocket (left side bolt can be unscrewed but not removed). Replace timing chain tensioner tool with timing gear support bracket. Move camshaft to rear to release it from sprocket.
- Install timing chain tensioner tool and remove timing gear chain support bracket tool from cylinder block face. Push camshaft into timing gear sprocket. Install timing gear sprocket bolt but DO NOT tighten. NOTE: Ensure camshaft does not catch on locking plate and sprocket fits correctly on camshaft.
- Remove timing chain tensioner tool. Position camshaft locking plate and tighten bolt. Using a 10 mm Allen wrench and screwdriver to hold chain, tighten timing gear sprocket.
- Install timing gear cover and replace upper bolts. Using an 8 mm Allen wrench, install timing gear plug on left cylinder head.
- Check camshaft end play. If end play exceeds .006" (.15 mm), replace lock plate. Install cover plate on right side using a new "O" ring. Install cover plate at rear of cylinder head with a new gasket.
- Disconnect battery ground cable. Remove splash guard, A/C compressor, and oil tube from oil cooler. Disconnect electrical leads from thermal sensor on radiator. Remove fan shroud, radiator and hoses, alternator and power steering pump belts.
- Remove power steering pump from bracket. Remove fan, water pump pulley and drive belts, air intake duct, vacuum pump, oil filler cap, control pressure regulator and ignition system connector. Turn crankshaft so pulley mark No. 1 is opposite "0" degree mark. (Scheme 15) Remove both valve covers and flywheel cover at left side of transmission.
- Install Flywheel Locking Bracket (5112) at flywheel opening of transmission. Using a 1 7/16" (36 mm) socket, remove the crankshaft nut. Remove pulley while key is on top of shaft (to prevent dropping key in crankcase). Remove timing gear cover. Remove timing gear seal.
- Clean surfaces and place gaskets on block and timing gear cover. Install cover and tighten bolts to 7-11 ft. lbs. (10-15 N.m). Using Crankshaft Oil Seal Driver (5103), install crankshaft oil seal.
- Using flywheel locking bracket and a 1 7/16" (36 mm) socket, install crankshaft pulley and tighten crankshaft nut. Complete installation by reversing removal procedure.
Inspection
To perform a visual inspection of timing chain wear, remove left camshaft cover. Check position of chain tensioner rubbing block. (Scheme 13) Chain tensioner rubbing block should not protrude more than.315" (8 mm). Replace chains if beyond specification.
Scheme 13
- Remove timing gear cover. Use a 10 mm Allen wrench and screwdriver to remove camshaft bolts. Turn each timing gear chain tensioner lock 1/4 turn counterclockwise and push in piston to slacken camshaft chains.
- Remove oil pump sprocket and chain, both tensioners, oil strainers, and all dampers. Remove camshaft sprockets and chains. Cover holes into crankcase to prevent items from falling in crankcase. From crankshaft, remove outer sprocket, inner double sprocket, and key. (Scheme 14)
Scheme 14
Scheme 15
Scheme 16
- Place inner key on crankshaft. Install inner double sprocket (line on sprocket should face outward). Install outer key and sprocket, new strainers, chain tensioners, and curved and straight dampers. Apply locking fluid to bolts.
- Rotate crankshaft so key aligns with camshaft in left bank (No. 1 cylinder at TDC). Position camshaft with key pointing upward (rocker arms for No. 1 cylinder should have no clearance). (Scheme 16)
- Place chain on camshaft sprocket with mark on sprocket between 2 marks on timing chain. (Scheme 16) Place chain on inner crankshaft sprocket so timing mark on sprocket is facing mark on crankshaft sprocket.
- Chain should be stretched on tension side (side against straight chain damper). Install left camshaft sprocket onto camshaft so that pin on sprocket slips into recess in camshaft. Use a screwdriver to hold sprocket and tighten center bolt.
- Rotate crankshaft clockwise so that key points straight downward. Set right side camshaft with keyway in position. (Scheme 16) Place chain on crankshaft center sprocket with mark on sprocket aligned to mark on timing chain. Place chain on camshaft sprocket so that mark on sprocket is between 2 marked timing chain links.
- Install sprocket on camshaft with chain stretched on tension side. Pin (on sprocket) should slip into camshaft recess. Use a screwdriver to hold sprocket and tighten center bolt. (Scheme 16): Aligning Camshaft Sprocket Timing Marks
- Turn lock on each chain tensioner 1/4 turn clockwise. Set chain tension by rotating crankshaft 2 full revolutions in direction of rotation (clockwise). NOTE: After initial rotation of crankshaft, marks on chains and sprockets will not coincide. It is necessary to rotate crankshaft several times before marks coincide.
- Install chain and chain sprocket for oil pump. Install new gasket with timing gear cover. Apply locking compound to bolts and tighten to 11 ft. lbs. (15 N.m). Attach wiring harness to timing gear cover.
- Install idler roller to timing gear cover. Using oil seal driver, install oil seal in timing cover. Install flywheel locking bracket at flywheel cover plate opening. Install pulley on crankshaft.
- Tighten crankshaft nut. Remove flywheel locking bracket and install flywheel cover plate at transmission. Complete installation by reversing removal procedure.
Scheme 17
IGNITION TIMING PLATE
- Remove intake manifold and water pump. Remove rear plug at top front of engine block. Rotate crankshaft so No. 1 TDC mark on pulley is at 20 degree mark on timing plate. (Scheme 15)
- Insert a long 5/16" drill bit or similar rod into hole and against crankshaft counterweight. (Scheme 17) Rotate crankshaft in direction of normal rotation until drill fits into recess in counterweight (TDC for No. 1 cylinder). CAUTION: DO NOT allow drill bit to slip into engine. Use a drill or rod 10" long or longer, when possible.
- Loosen 2 bolts and adjust timing plate so that "0" degree mark is aligned with pulley mark. Tighten 2 bolts and remove drill bit or rod. Install plug with new seal and tighten to 26-30 ft. lbs. (35-40 N.m). Install water pump and intake manifold.
- Remove valve cover from cylinder head. Loosen rocker arm shaft bolts in sequence and remove rocker arm shaft assembly. Remove lock ring from end of shaft. Remove rocker arms, shaft supports, spacer sleeves and springs.
- Keep all parts in order for correct assembly. Remove lock bolt and rocker shaft support from rocker shaft. Check shaft-to-arm clearance. Clearance when new is .0005-.002" (.012-.054 mm). Replace worn parts as necessary.
- Install rocker shaft support on rocker shaft with lubricating holes pointing downward. Flat top surface should face toward lock ring groove in other end of shaft. Tighten lock bolt.
- Install thick spacer, exhaust rocker arm, thin spacer, intake rocker arm, spring and rocker shaft support, in order. Install lock ring in rocker shaft groove. (Scheme 18)
Scheme 18
VALVE ARRANGEMENT
Right Bank - E-I-E-I-E-I (Front-to-rear).
Left Bank - I-E-I-E-I-E (Front-to-rear).
VALVE SPRINGS & OIL SEALS
With cylinder head removed from engine, remove spark plugs, rear cover plate, lock plate and camshaft. Using a valve spring compressor, remove valve keepers, spring retainer, spring, lower spring seat and valve. Remove valve guide seal from guide. Mark valves for installation reference.
VALVE GUIDES
- Check valve guides for wear. If replacement is necessary, press out guide using Removal Drift (5218). Ream hole in cylinder head to first or second oversize.
- Heat cylinder head to 300°F (150°C) and cool valve guides to -95°F (-70°C). Press valve guides into cylinder head within 3-4 seconds. Use Installing Drift (5108) for intake or (5109) for exhaust, to press in new guides.
- Using Reamer (5224), ream guides to .3150-.3158" (8.00-8.02 mm). Check for burrs and ensure valves move freely in guides. Install valve guide seals.
Scheme 19
- Remove lower crankcase and cylinder heads. Install cylinder liner holders to keep liners from being pushed out with piston. Check connecting rod and crankshaft markings so piston assemblies can be installed in their original positions.
- Connecting rods are marked "A" through "F" from rear of engine to front. Remove bearing cap nuts, bearing caps and push piston assembly out through top of bore. Remove big end bearing.
- Remove piston rings. Clean ring grooves and piston of any carbon deposits. Measure side clearance and end gap of piston rings with a feeler gauge. Replace any components not within specifications.
- Install piston rings with end gaps at 120 degree angles from each other. Offset gaps on oil control rings. Note position marking on compression rings and install with markings pointing up. (Scheme 19)
- Lightly lubricate rings. Using Piston Installer (5106), press piston into proper bore. Ensure stamped arrow on top of piston is pointing toward front of engine.
- Check rod offset position. Connecting rod offset should be positioned behind for cylinders 1, 2 and 3, and in front for cylinders 4, 5 and 6. Install connecting rod bearing cap and tighten to 33-37 ft. lbs. (45-50 N.m).
Scheme 20
- Pistons and liners are available only as matched sets. Pistons are classified by diameter in 3 categories. Marking on piston top is either "A", "B" or "C", and corresponds to liners marked "1", "2" or "3" respectively.
- Liners are marked in recesses at top of liner. Pistons and piston pins are also classified by diameters, with Blue, Red and White markings being used instead of numbers for proper matching. PISTON & LINER DIAMETERS Application Diameter In. (mm) Piston Designation "A" (for liner "1") 3.5815-3.5819 (90.97-90.98) "B" (for liner "2") 3.5819-3.5823 (90.98-90.99) "C" (for liner "3") 3.5823-3.5827 (90.99-91.00) Liner Designation "1" (for piston "A") 3.5827-3.5831 (91.00-91.01) "2" (for piston "B") 3.5831-3.5835 (91.01-91.02) "3" (for piston "C") 3.5835-3.5839 (91.02-91.03)
- Measure piston diameter at right angles to pin bore. Take measurements.32" (8.0 mm) above lower edge. With an bore gauge dial indicator, check cylinder liner taper, wear and out-of-round.
- DO NOT remove pistons from connecting rods, unless piston and liner replacement is necessary. If liner is to be removed for cleaning or inspection, mark liner and block. DO NOT damage gasket surface. Remove liner holders and pull up liners.
- When installing liners, ensure contact surfaces on block and liner are clean and without defects. Install No. 1 liner first (without shims) using previous markings for alignment.
- Hand tighten liner, using 2 liner holders. Using a dial indicator, measure liner height above block at 3 points. Largest measurement should not exceed smallest measurement by more than.002" (.05 mm).
- Liner should be.006-.008" (.14-.21 mm) above block face. Use correct shims to achieve dimension. LINER SHIM THICKNESSES Color Thickness - In. (mm) Blue.0028-.0041 (.070-.105) White.0033-.0047 (.085-.120) Red.0041-.0055 (.105-.140) Yellow.0051-.0065 (.130-.165)
- Install shims with color marking up. (Scheme 20) Inner tabs on shims should be in liner groove.
- After shimming, install 4 liner holders for each bank. Measure each liner at 3 points. Largest and smallest dimensions should be within.002" (.05 mm). (Scheme 21) If height difference exceeds specifications, change shims.
Checking Liner Height Above Block Face. Scheme 21
Remove oil pan, gasket, oil strainer and baffle plate. Remove crankcase bolts and main bearing nuts. Remove lower crankcase. Install main Bearing Cap Retainers (5096) on 2 outer bearings.
Scheme 22
- Install rubber "O" ring and sleeve for oil gallery. Clean and apply sealing compound to crankcase, and block surfaces. Remove main bearing cap retainers and install lower crankcase.
- Ensure crankcase and block are flush at rear, and tighten main bearing nuts to 22 ft. lbs. (30 N.m). (Scheme 22), loosen No. 1 nut and retighten to 22-25 ft. lbs. (30-34 N.m).
- Using Protractor (5098), tighten nut an additional 75 degrees. Continue tightening in sequence, loosen each nut, tighten, and angle tighten to specifications. Tighten lower crankcase bolts to 11-15 ft. lbs. (15-20 N.m). Install baffle plate, oil strainer, gasket and oil pan.
- Remove engine from chassis. See ENGINE REMOVAL. Remove oil pan, lower crankcase, and drive plate and spacer for automatic transmission. Remove rear crankshaft seal holder and pry out oil seal. Press in new seal, flush with seal holder.
- Remove front pulley and timing chain cover. Remove timing chains and oil pump drive chain. Note location of markings on connecting rods. Remove connecting rod caps.
- Check main bearing cap markings (marked 1 through 4, from rear-to-front). Remove main bearing retainers and caps. Remove upper and lower thrust bearings and lift out crankshaft. Remove main bearing inserts from block and caps.
Note. Thrust bearing is located on flywheel end of crankshaft.
- Inspect crankshaft and measure journals for wear. Position oiled main bearings with oil holes to engine block. Carefully set crankshaft into place. Oil and install thrust bearings with notched ends in engine block groove.
- Oil and install unnotched thrust bearings on crankshaft. Lubricate bearing shell and position in bearing cap. Install bearing cap and bearing retainers. Note that cap identification number faces front of engine.
- Using a dial indicator, measure crankshaft end play and install thrust washers to adjust end play to .003-.011" (.07-.27 mm). Oil remaining bearing shells, place in caps and install. Ensure bearing cap numbers reference toward front of engine.
- Install main bearing retainer on rear main cap and 1 nut on each remaining bearing cap to keep them in place until installation of lower crankcase. Install timing chains and tensioners.
- Install connecting rod caps and tighten to specification. Check and adjust camshaft timing and install front chain cover. Install lower crankcase and tighten main caps. To complete installation reverse removal procedures.
Remove engine from chassis. See ENGINE REMOVAL. Remove lower oil pan and crankcase. Install main bearing retainers to hold crankshaft in place. Note location of identifying marks on connecting rods and caps. Remove caps and bearings.
Inspection & Service
Side clearance between connecting rod and crankshaft journal is .008-.015" (.20-.38 mm). If side clearance exceeds specification rod must be replaced. Connecting rod bolts are pressed in. Piston and rod assembly must be removed to replace bolts. Bearing clearance is .0011-.0031 (.030-.080 mm), check with Plastigage.
Lubricate and install bearing inserts. Tighten connecting rod nuts. Remove main bearing cap retainers. Install sleeve and "O" ring for oil gallery. Apply sealant and install lower crankcase. Tighten main bearing cap nuts to specification. (Scheme 22) Install lower oil pan.
ENGINE OILING SYSTEM
Engine utilizes a force-feed lubrication system. Oil moves from oil pan through strainer to oil pump and full-flow oil filter mounted outside of engine block assembly. Oil is pressure fed from filter to drilled galleries in block.
Lubricant moves under pressure to main bearings, which are drilled to pass oil on to connecting rod and camshaft bearings, upward in block to rocker arm shafts.
Excess or run-off oil drains back down into oil pan through drain holes in cylinder head. Cylinder walls and piston rings are lubricated by splash from connecting rods.
CRANKCASE CAPACITY
Crankcase capacity is 6.9 quarts (6.5L) with oil filter change, and 6.3 quarts (6.0L) without filter change.
OIL PRESSURE
With engine warm and a new filter installed, minimum oil pressure should be 14.2 psi (1.0 kg/cm 2 ) @ 900 RPM, and 57 psi (4 kg/cm 2 ) @ 3000 RPM.
| Application | In. (mm) | |
|---|---|---|
| Backlash | (1) .007-.011 (.17-.27) | |
| Bearing Clearance | ||
| Driving Shaft | .0006-.0021 (.015-.053) | |
| Idler Shaft | .0006-.0020 (.015-.051) | |
| Clearance Tooth-to-Housing | (1) .0043-.0072 (.110-.185) | |
| End Play | .0009-.0033 (.025-.084) | |
| Relief Valve Spring Length, No Load | 3.52 (89.5) | |
| (1) Excluding bearing clearance. | ||
| (1) | Excluding bearing clearance. |
OIL PUMP SPECIFICATIONS
OIL PUMP
Oil pump is serviced as a complete unit (housing cover with impeller and relief valve). Inspect housing, cover and gears for damage or wear. Replace if necessary.
Remove drive belts, crankshaft pulley and timing gear cover. Remove oil pump drive sprocket and chain. Remove 4 retaining bolts and lift out oil pump with gears.
Place gears on shaft and lubricate pump housing, gears and shaft. Install pump assembly, ensuring pump gears and shafts are centered in housing before tightening bolts. Install pump drive sprocket and chain. Install remaining components in reverse of removal order.
Removal & Installation
- Disconnect negative battery cable. Drain coolant from both sides of block. Remove intake manifold, splash guard, wiring from thermal switch in radiator, upper radiator hose and automatic transmission oil cooler pipes. Remove fan shroud, radiator and fan.
- Remove hoses from pump to block. Remove fan belts, water pump pulley and remaining hose clamps. Remove senders from water pump and pump from block. Remove cover and thermostat from pump body. Install in reverse order.
Note. For further information on cooling systems, see ENGINE COOLING section.
TORQUE SPECIFICATIONS
| Application | Ft. Lbs. (N.m) | |
|---|---|---|
| Camshaft Center Bolt | 52-66 (70-90) | |
| Connecting Rod Cap Nuts | 33-37 (45-50) | |
| Crankshaft Pulley Nut | 177-206 (240-280) | |
| Cylinder Head Bolts | (1) | |
| Exhaust Manifold Bolts | 11 (15) | |
| Flywheel Bolts | 33-37 (45-50) | |
| Intake Manifold Bolts | 11 (15) | |
| Main Bearing Nuts | ||
| Step 1 | 22-26 (30-35) | |
| Step 2 | (2) | |
| Lower Crankcase Bolts | 11-15 (15-20) | |
| Transmission-to-Engine | 30-36 (41-49) | |
| (1) See CYLINDER HEAD TIGHTENING . (2) Angle tighten an additional 75 degrees. | ||
| (1) | See CYLINDER HEAD TIGHTENING . |
| (2) | Angle tighten an additional 75 degrees. |
TORQUE SPECIFICATIONS
GENERAL ENGINE SPECIFICATIONS
| Application | Specification | |
|---|---|---|
| Displacement | ||
| Cubic Inches | 174 | |
| Liters | 2.8 | |
| Bore In. (mm) | 3.58 (91.0) | |
| Stroke In. (mm) | 2.87 (73.0) | |
| Fuel System | Fuel Injection | |
| HP @ RPM | 130 @ 5500 | |
| Torque Ft. @ RPM | 159 @ 2700 | |
| Compression Ratio | 8.8:1 | |
GENERAL ENGINE SPECIFICATIONS
VALVE SPECIFICATIONS
| Application | In. (mm) | |
|---|---|---|
| Intake | ||
| Head Diameter | 1.73 (44) | |
| Face Angle | 29.5° | |
| Seat Angle | 30° | |
| Seat Width | .051-.067 (1.3-1.7) | |
| Stem Diameter | .3135-.3145 (7.970-7.990) | |
| Stem Clearance | .002 (.058) | |
| Valve Lift | N/a Exhaust | |
| Head Diameter | 1.46 (37) | |
| Face Angle | 44.5° | |
| Seat Angle | 45° | |
| Seat Width | .079-.094 (2.0-2.4) | |
| Stem Diameter | .3127-.3141 (7.95-7.98) | |
| Stem Clearance | .002 (.058) | |
| Valve Lift | N/a | |
VALVE SPECIFICATIONS
PISTON/PIN/RING SPECIFICATIONS
| Application | In. (mm) | ||
|---|---|---|---|
| Piston Clearance | .0007-.0015 (.020-.040) | ||
| Pin-to-Piston Fit | .0006-.0008 (.010-.016) | ||
| Pin-to-Rod Fit | 0007-0016 (-.020-.041) Press Fit. | ||
| Rings | |||
| Ring No. 1 | |||
| End Gap | .016-.024 (.40-.60) | ||
| Side Clearance | .0018-.0029 (.045-.074) | ||
| Ring No. 2 | |||
| End Gap | .016-.024 (.40-.60) | ||
| Side Clearance | .0010-.0021 (.025-.054) | ||
| Oil Ring | |||
| End Gap | .016-.057 (.40-1.45) | ||
| Side Clearance | .0004-.0092 (.009-.233) | ||
PISTONS, PINS & RINGS SPECIFICATIONS
BEARING SPECIFICATIONS
| Application | In. (mm) | |
|---|---|---|
| Main Bearings | ||
| Journal Diameter | 2.7575-2.7583 (70.043-70.062) | |
| Clearance | .0014-.0034(.038-.088) | |
| Thrust Bearing | N/a | |
| Crankshaft End Play | .0027-.0106 (.070-.270) | |
| Connecting Rod Bearings | ||
| Journal Diameter | 2.0577-2.0585 (52.267-52.286) | |
| Clearance | .0011-.0031 (.030-.080) | |
| Side Play | .008-.015 (.20-.38) | |
CRANKSHAFT MAIN & CONNECTING ROD BEARINGS SPECS
VALVE SPRING SPECIFICATIONS
| Application | In. (mm) | |
|---|---|---|
| Free Length | 1.850 (47.1) | |
| Pressure - Lbs. @ In. (Kg @ mm) | ||
| Valve Closed | 52-60 @ 1.57 (23-27 @ 40) | |
| Valve Open | 137-154 @ 1.180 (61-69 @ 30) | |
VALVE SPRING SPECIFICATIONS
CAMSHAFT SPECIFICATIONS
| Application | In. (mm) | |
|---|---|---|
| Journal Diameter | ||
| Front | 1.5921-1.5931 (40.440-40.465) | |
| 2nd | 1.6157-1.6167 (41.040-41.065) | |
| 3rd | 1.6394-1.6403 (41.640-41.665) | |
| 4th | 1.6629-1.6639 (42.240-42.265) | |
| Clearance | .0013-.0033 (.035-.085) | |
| Lobe Lift | N/a | |
CAMSHAFT SPECIFICATIONS
See also:
• VALVE CLEARANCE ADJUSTMENT
• CYLINDER HEAD TIGHTENING