Nissan Altima L32. Instruction — part 920
LU-26
< ON-VEHICLE MAINTENANCE >
[VQ35DE]
OIL FILTER
5. After warming up the engine, check for any engine oil leaks.
OIL PUMP
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< ON-VEHICLE REPAIR >
[VQ35DE]
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ON-VEHICLE REPAIR
OIL PUMP
Removal and Installation
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REMOVAL
1. Remove the timing chain. Refer to
.
2. Remove oil pump assembly.
INSTALLATION
Installation is in the reverse order of removal.
Disassembly and Assembly
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CAUTION:
Before assembly apply new engine oil to the parts as shown above.
DISASSEMBLY
1. Remove the oil pump cover.
2. Remove inner rotor and outer rotor from oil pump housing.
3. Remove oil strainer from oil pump housing.
4. After removing regulator plug, remove spring and regulator valve.
INSPECTION AFTER DISASSEMBLY
Clearance of Oil Pump Parts
AWBIA0715ZZ
1.
Oil pump housing
2.
Outer rotor
3.
Inner rotor
4.
Oil pump cover
5.
O-ring
6.
Regulator valve set
7.
Regulator valve
8.
Spring
9.
Regulator plug
10. Oil strainer
LU-28
< ON-VEHICLE REPAIR >
[VQ35DE]
OIL PUMP
• Measure clearance with feeler gauge.
• Clearance between outer rotor and oil pump body (position 1).
• Tip clearance between inner rotor and outer rotor (position 2).
• Measure clearance with feeler gauge and straightedge.
• Side clearance between inner rotor and oil pump body (position 3).
• Side clearance between outer rotor and oil pump body (position 4).
• Calculate the clearance between inner rotor and oil pump body as follows.
1. Measure the outer diameter of protruded portion of inner rotor
(position A).
2. Measure the inner diameter of oil pump body with inside
micrometer (position B).
(clearance 5) = (inner diameter of oil pump body B) – (outer
diameter of inner rotor A)
Regulator Valve
1. Visually inspect components for wear and damage.
2. Check oil pressure regulator valve sliding surface and valve
spring.
3. Coat regulator valve with engine oil. Check that it falls smoothly
into the valve hole by its own weight.
If damaged, replace regulator valve set or oil pump body.
Regulator Valve Clearance
Standard
: 0.114 - 0.260 mm (0.0045 - 0.0102 in)
Standard
: Below 0.180 mm (0.0071 in)
SLC932A
Standard
: 0.030 - 0.070 mm (0.0012 - 0.0028 in)
Standard
: 0.050 - 0.110 mm (0.0020 - 0.0043 in)
SLC933A
Standard
: 0.045 - 0.091 mm (0.0018 - 0.0036 in)
SLC934AB
SLC251B
OIL PUMP
LU-29
< ON-VEHICLE REPAIR >
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(Clearance 6) = D (Valve hole diameter) – E (Outer diameter of
valve)
If it exceeds the standard, replace the oil pump body.
CAUTION:
Coat regulator valve with engine oil.
Check that it falls smoothly into the valve hole by its own
weight.
Assembly
Assembly is in the reverse order of disassembly.
• Assemble the inner rotor and outer rotor with the punched marks
on the oil pump cover side.
CAUTION:
Before assembly apply new engine oil to the parts as speci-
fied.
Standard
: 0.040 - 0.097 mm (0.0016 - 0.0038 in)
SLC935AA
SLC324B
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