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Contents Wiring diagrams Section: Lubrication System All sections

Engine Lubrication Acura MDX I

Lubrication System 19 illustrations ~1267 words

Scheme 1

Scheme 1: Special Tools
Scheme 1: Special Tools

Scheme 2

Scheme 2: Component Location Index
Scheme 2: Component Location Index

Symptom Troubleshooting Index

SymptomDiagnostic procedureAlso check for
Excessive engine oil consumptionCheck for looseness in the engine oil fill cap, oil drain bolt, and oil filter. Check for oil leaks. Check for worn valve guide(s) (see VALVE INSPECTION ) or worn valve stem seal(s) (see VALVE, SPRING, AND VALVE SEAL REMOVAL ). Check for damaged or worn piston ring(s) (see PISTON RING REPLACEMENT ). Check for damaged or worn engine internal parts (cylinder wall, pistons, etc.) (see BLOCK AND PISTON INSPECTION ).
Low oil pressure indicator does not come on with the ignition switch ON (II)Do the gauge control unit input test (see CONTROL UNIT INPUT TEST ). Test the oil pressure switch (see OIL PRESSURE SWITCH TEST ).An open in the wire between the gauge control module and the oil pressure switch
Low oil pressure indicator stays onCheck the engine oil level. Do the gauge control unit input test (see CONTROL UNIT INPUT TEST ). Test the oil pressure switch (see OIL PRESSURE SWITCH TEST ). Check the engine oil pressure (see OIL PRESSURE TEST ). Check the oil filter for clogging. Check the oil screen for clogging. Check the relief valve (see OIL PUMP OVERHAUL ). Test the oil pump (see REMOVAL ).A wire shorted to ground between the gauge control module and the oil pressure switch

SYMPTOM TROUBLESHOOTING INDEX

Scheme 3

Scheme 3: Oil Pressure Switch Test
Scheme 3: Oil Pressure Switch Test
  1. Remove the YEL/RED wire (A) from the engine oil pressure switch (B).
  2. Check for continuity between the positive terminal (C) and the engine (ground). There should be continuity with the engine stopped. There should be no continuity with the engine running.

Scheme 4

Scheme 4: Oil Pressure Switch Replacement
Scheme 4: Oil Pressure Switch Replacement
  1. Disconnect the oil pressure switch connector, then remove the oil pressure switch.
  2. Remove any old liquid gasket from the switch and switch mounting hole.
  3. Apply a very small amount of liquid gasket to the oil pressure switch threads, then install the oil pressure switch. NOTE: Using too much liquid gasket may cause liquid gasket to enter the oil passage or the end of the new oil pressure switch.

Oil Pressure Test

If the low oil pressure indicator stays on with the engine running, check the engine oil level. If the oil level is correct

Scheme 5

Scheme 5: Oil Pressure Test
Scheme 5: Oil Pressure Test
  1. Remove the engine oil pressure switch, then install an oil pressure gauge (A).
  2. Start the engine. Shut it off immediately if the gauge registers no oil pressure. Repair the problem before continuing.
  3. Allow the engine to reach operating temperature (fan comes on at least twice). The pressure should be: Engine Oil Temperature: 176°F (80°C) Engine Oil Pressure: At Idle: 70 kPa (0.7 kgf/cm 2 ,10 psi) min. At 3,000 rpm: 490 kPa (5.0 kgf/cm 2 ,71 psi) min.
  4. If oil pressure is not within specifications, inspect these items: Replace the oil filter (see «ENGINE OIL FILTER REPLACEMENT»(/acura/mdx/i-2000-2006/remont/lubrication-system/#engine-lubrication__engine-oil-filter-replacement) ). Check the oil screen for clogging. Check the relief valve (see «OIL PUMP OVERHAUL»(/acura/mdx/i-2000-2006/remont/lubrication-system/#engine-lubrication) ). Inspect the oil pump (see «REMOVAL»(/acura/mdx/i-2000-2006/remont/lubrication-system/#engine-lubrication) ).

Scheme 6

Scheme 6: Engine Oil Replacement
Scheme 6: Engine Oil Replacement
  1. Warm up the engine.
  2. Remove the drain bolt (A), and drain the engine oil.
  3. Reinstall the drain bolt with a new washer (B).
  4. Refill with the recommended oil (see «LUBRICANTS & FLUIDS»(/acura/mdx/i-2000-2006/remont/schedule/#lubricants-fluids) ). Capacity At Oil Change: 4.0 L (4.2 US qt) At Oil Change including Filter: 4.3 L (4.5 US qt) After Engine Overhaul: 5.0 L (5.3 US qt)
  5. Run the engine for more than 3 minutes, then check for oil leakage.

Engine Oil Filter Replacement

Special Tools Required

Oil filter wrench 07HAA-PJ70100

Scheme 7

Scheme 7: Engine Oil Filter Replacement
Scheme 7: Engine Oil Filter Replacement

Scheme 8

Scheme 8
Scheme 8

Scheme 9

Scheme 9
Scheme 9
  1. Remove the oil filter with the special tool.
  2. Inspect the threads (A) and rubber seal (B) on the new filter. Clean the seat on the engine block, then apply a light coat of new engine oil to the filter rubber seal. Use only filters with a built-in bypass system.
  3. Install the oil filter by hand.
  4. After the rubber seal seats, tighten the oil filter clockwise with the special tool. Tighten: 3/4 Turn Clockwise Tightening Torque: 12 N.m (1.2 kgf.m, 8.7 lbf.ft)
  5. If four numbers or triangle(s) are printed around the outside of the filter, you can use the following procedure to tighten the filter. Spin the filter on until its seal lightly seats against the block, and note which number or triangle(s) is at the bottom. Tighten the filter by turning it clockwise three numbers or triangle(s) from the one you noted. For example, if triangle is at the bottom when the seal is lightly seated, tighten the filter until the triangles comes around to the bottom.
  6. After installation, fill the engine with oil up to the specified level, run the engine for more than 3 minutes, then check for oil leakage.

Scheme 10

Scheme 10: Oil Filter Feed Pipe Replacement
Scheme 10: Oil Filter Feed Pipe Replacement

Scheme 11

Scheme 11
Scheme 11
  1. Remove the filter (see «ENGINE OIL FILTER REPLACEMENT»(/acura/mdx/i-2000-2006/remont/lubrication-system/#engine-lubrication__engine-oil-filter-replacement) ).
  2. Remove the oil filter feed pipe.
  3. Install two 20 x 1.5 mm nuts (A) onto the new oil filter feed pipe, and hold one nut with a wrench, then tighten the other nut.
  4. Tighten the oil filter feed pipe to 49 N.m (5.0 kgf.m, 36 lbf.ft), then remove the nuts from the oil filter feed pipe.

Scheme 12

Scheme 12: Exploded View
Scheme 12: Exploded View

Special Tools Required

Oil seal driver, 64 mm 070AD-RCAA100

Scheme 13

Scheme 13: Removal
Scheme 13: Removal
  1. Drain the engine oil (see «ENGINE OIL REPLACEMENT»(/acura/mdx/i-2000-2006/remont/lubrication-system/#engine-lubrication) ).
  2. Turn the crankshaft so that the No. 1 piston is at top dead center (TDC) (see «TIMING BELT INSPECTION»(/acura/mdx/i-2000-2006/remont/mechanical/#cylinder-head) ).
  3. Remove the timing belt (see «TIMING BELT REMOVAL»(/acura/mdx/i-2000-2006/remont/mechanical/#cylinder-head) ).
  4. Remove the idler pulley.
  5. Remove the crankshaft position (CKP) sensor (see «CKP SENSOR REPLACEMENT»(/acura/mdx/i-2000-2006/remont/testing-diagnostics/#pgm-fi-system) ).
  6. Attach the chain hoist to the engine hanger on the power steering (P/S) pump bracket (see step 49 in «ENGINE REMOVAL»(/acura/mdx/i-2000-2006/remont/mechanical/#engine-removal-and-installation) ).
  7. Remove the jack from under the oil pan.
  8. Remove the rocker arm oil control solenoid (VTEC solenoid valve) and oil filter assembly (see «ROCKER ARM OIL CONTROL SOLENOID (VTEC SOLENOID (VTEC SOLENOID VALVE) REPLACEMENT).»(/acura/mdx/i-2000-2006/remont/testing-diagnostics/#vtec)
  9. Remove the oil pan (see «OIL PAN REMOVAL»(/acura/mdx/i-2000-2006/remont/mechanical/#engine-block) ).
  10. Remove the oil screen (A).
  11. Remove the mounting bolts and the oil pump assembly (B).

Scheme 14

Scheme 14: Inspection
Scheme 14: Inspection

Scheme 15

Scheme 15
Scheme 15

Scheme 16

Scheme 16
Scheme 16
  1. Remove the screws from the pump housing, then separate the housing and cover.
  2. Check the inner-to-outer rotor radial clearance between the inner rotor (A) and outer rotor (B). If the inner-to-outer rotor clearance exceeds the service limit, replace the oil pump assembly. Inner Rotor-to-Outer Rotor Radial Clearance Standard (New): 0.04-0.16 mm (0.002-0.006 in.) Service Limit: 0.20 mm (0.008 in.)
  3. Check the housing-to-rotor axial clearance between the rotors (A) and pump housing (B). If the housing-to-rotor axial clearance exceeds the service limit, replace the oil pump assembly. Housing-to-Rotor Axial Clearance Standard (New): 0.02-0.07 mm (0.001-0.003 in.) Service Limit: 0.12 mm (0.005 in.)
  4. Check the housing-to-outer rotor radial clearance between the outer rotor (A) and pump housing (B). If the housing-to-outer rotor radial clearance exceeds the service limit, replace the oil pump assembly. Housing-to-Outer Rotor Radial Clearance Standard (New): 0.10-0.19 mm (0.004-0.007 in.) Service Limit: 0.20 mm (0.008 in.)
  5. Inspect both rotors and pump housing for scoring or other damage. Replace parts, if necessary.
  6. Apply liquid thread lock to the pump housing screws, then install the oil pump cover.
  7. Check that the oil pump turns freely.

Scheme 17

Scheme 17: Installation
Scheme 17: Installation

Scheme 18

Scheme 18
Scheme 18

Scheme 19

Scheme 19
Scheme 19
  1. Remove the old oil seal from the oil pump.
  2. Gently tap in the new oil seal until the special tool bottoms on the pump.
  3. Remove any old liquid gasket from the oil pump mating surfaces, bolts, and bolt holes.
  4. Clean and dry the oil pump mating surfaces.
  5. Apply liquid gasket, P/N 08717-0004, 08718-0001, 08718-0002, 08718-0003, or 08718-0009, evenly to the engine block mating surface of the oil pump. NOTE: Do not install components if too much time has passed after applying the liquid gasket (for P/N 08718-0002, no more than 4 minutes, for all others, no more than 5 minutes). Instead, remove the old residue and reapply the liquid gasket.
  6. Grease the lip of the oil seal, and apply oil to the new O-ring (A).
  7. Install the dowel pins (B), then align the inner rotor with the crankshaft, and install the oil pump (C).
  8. Clean the excess grease off the crankshaft, and check the seal for distortion.
  9. Install the oil screen (D) with new O-ring (E).
  10. Install the rocker arm oil control solenoid (VTEC solenoid valve)/oil filter assembly, with a new rocker arm oil control solenoid (VTEC solenoid valve) filter (see step 38 in «CRANKSHAFT AND PISTON INSTALLATION»(/acura/mdx/i-2000-2006/remont/mechanical/#engine-block__crankshaft-and-piston-installation) ).
  11. Install the oil pan (see «OIL PAN INSTALLATION»(/acura/mdx/i-2000-2006/remont/mechanical/#engine-block) ).
  12. Install the crankshaft position (CKP) sensor (see «CKP SENSOR REPLACEMENT»(/acura/mdx/i-2000-2006/remont/testing-diagnostics/#pgm-fi-system) ).
  13. Install the timing belt (see «TIMING BELT INSTALLATION»(/acura/mdx/i-2000-2006/remont/mechanical/#cylinder-head__timing-belt-installation) ).
  14. Remove the engine hanger.