Nissan Frontier. Instruction — part 992
OIL COOLER
LU-29
< REMOVAL AND INSTALLATION >
[VQ40DE]
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*Power steering fluid, brake fluid, etc.
Fuel
Leakage
Leakage
Leakage
Exhaust gas
—
Leakage
—
Item
Before starting engine
Engine running
After engine stopped
LU-30
< REMOVAL AND INSTALLATION >
[VQ40DE]
OIL PUMP
OIL PUMP
Exploded View
INFOID:0000000009479906
Removal and Installation
INFOID:0000000009479907
REMOVAL
1. Disconnect the battery negative terminal. Refer to
PG-83, "Removal and Installation"
2. Remove the RH and LH wheels and tires. Refer to
.
3. Remove the RH and LH front fender protectors. Refer to
EXT-25, "Removal and Installation"
.
4. Remove the air duct and resonator assembly and the air cleaner case (upper). Refer to
5. Remove timing chain (primary) only. Refer to
EM-176, "Removal and Installation"
.
6. Remove the oil pump assembly.
INSTALLATION
Installation is in the reverse order of removal, paying attention to the following.
• When installing, align crankshaft flat faces with inner rotor flat faces.
INSPECTION AFTER INSTALLATION
• Before starting engine, check oil/fluid levels including engine coolant and engine oil. If less than required
quantity, fill to the specified level. Refer to
MA-16, "FOR USA AND CANADA : Fluids and Lubricants"
(United
States and Canada) and
MA-18, "FOR MEXICO : Fluids and Lubricants"
(Mexico).
• Use procedure below to check for fuel leakage.
• Turn ignition switch ON (with engine stopped). With fuel pressure applied to fuel piping, check for fuel leak-
age at connection points.
• Start engine. With engine speed increased, check again for fuel leakage at connection points.
• Run engine to check for unusual noise and vibration.
NOTE:
If hydraulic pressure inside timing chain tensioner drops after removal and installation, slack in the guide
may generate a pounding noise during and just after engine start. However, this is normal. Noise will stop
after hydraulic pressure rises.
• Warm up engine thoroughly to make sure there is no leakage of fuel, exhaust gas, or any oils/fluids including
engine oil and engine coolant.
• Bleed air from passages in lines and hoses, such as in cooling system.
1.
Oil pump body
2.
Oil pump outer rotor
3.
Oil pump inner rotor
4.
Oil pump cover
5.
Regulator valve plug
6.
Regulator valve spring
7.
Regulator valve spring
8.
Regulator valve
PBIC2826E
OIL PUMP
LU-31
< REMOVAL AND INSTALLATION >
[VQ40DE]
C
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• After cooling down engine, again check oil/fluid levels including engine oil and engine coolant. Refill to spec-
ified level, if necessary.
• Summary of the inspection items:
*Power steering fluid, brake fluid, etc.
Item
Before starting engine
Engine running
After engine stopped
Engine coolant
Level
Leakage
Level
Engine oil
Level
Leakage
Level
Transmission/
transaxle fluid
A/T and CVT Models
Leakage
Level/Leakage
Leakage
M/T Models
Level/Leakage
Leakage
Level/Leakage
Other oils and fluids*
Level
Leakage
Level
Fuel
Leakage
Leakage
Leakage
Exhaust gas
—
Leakage
—
LU-32
< UNIT DISASSEMBLY AND ASSEMBLY >
[VQ40DE]
OIL PUMP
UNIT DISASSEMBLY AND ASSEMBLY
OIL PUMP
Disassembly and Assembly
INFOID:0000000009479908
DISASSEMBLY
1. Remove oil pump cover.
2. Remove inner rotor and outer rotor from oil pump body.
3. Remove the regulator valve plug, regulator valve spring and regulator valve.
INSPECTION AFTER DISASSEMBLY
Clearance of Oil Pump Parts
• Measure radial clearance using a suitable tool.
• Measure side clearance using suitable tools.
• Calculate the clearance between inner rotor and oil pump body as
follows.
1. Measure the inner diameter of oil pump body to brazed portion
(position 5) using suitable tool.
2. Measure the outer diameter of protruded portion of inner rotor
(position 6) using suitable tool.
3. Calculate the clearance using the following formula.
• (Clearance) = (Inner diameter of oil pump body) - (Outer diameter of inner rotor)
Regulator Valve Clearance
Body to outer rotor (position 1)
: Refer to
Inner rotor to outer rotor tip (position 2)
: Refer to
PBIC2827E
Body to inner rotor (position 3)
: Refer to
Body to outer rotor (position 4)
: Refer to
PBIC2828E
PBIC0821E
Inner rotor to brazed portion of housing
clearance
: Refer to
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