Nissan Frontier D22. Manual - part 785

LU-14

[VG33E and VG33ER]

LUBRICATION SYSTEM

LUBRICATION SYSTEM

PFP:15010

Lubrication Circuit

EBS00GUS

SLC082B

ENGINE OIL

LU-15

[VG33E and VG33ER]

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ENGINE OIL

PFP:KLA92

Oil Pressure Check

EBS00GUT

WARNING:

●

Be careful not to burn yourself, as the engine and oil may be hot.

●

Oil pressure check should be done in “Neutral position” (M/T) or “Parking position” (A/T).

1.

Check oil level.

2.

Remove oil pressure switch.

3.

Install pressure gauge.

4.

Start engine and warm it up to normal operating temperature.

5.

Check oil pressure with engine running under no-load at idle
speed and at 2,000 rpm.
Engine oil pressure [oil temperature at 80

°C (148°F)]

●

If difference is extreme, check oil passage and oil pump for oil leaks.

6.

Install oil pressure switch with sealant. Refer to 

GI-42, "RECOMMENDED CHEMICAL PRODUCTS AND

SEALANTS"

 .

ALC120

Engine speed

rpm

Approximate discharge pressure

kPa (kg/cm

2

 , psi)

Idle speed

More than 59 (0.6, 9)

2,000

412 - 451 (4.2 - 4.6, 

60 - 65)

Oil pressure switch

: 12.25 – 17.15 N·m (1.3 – 1.7 kg-m, 9 – 12 ft-lb)

SLC926

LU-16

[VG33E and VG33ER]

OIL PUMP

OIL PUMP

PFP:15010

Removal and Installation

EBS00GUU

1.

Drain engine oil. Refer 

MA-30, "Changing Engine Oil"

 .

2.

Drain engine coolant from drain plug on radiator. Refer to 

MA-26, "Changing Engine Coolant"

 .

3.

Remove air duct (from mass air flow sensor to throttle body).

4.

Remove cooling fan. Refer to 

CO-32, "COOLING FAN (CRANKSHAFT DRIVEN)"

 .

5.

Remove radiator hoses (upper and lower) and fan shroud. Refer to 

CO-30, "RADIATOR"

 .

6.

Remove drive belts. Refer to 

MA-24, "Checking Drive Belts"

 .

7.

Remove crankshaft pulley and front upper and lower belt covers. Refer to 

EM-91, "TIMING BELT"

 .

8.

Remove oil pan. Refer to 

EM-88, "OIL PAN"

 .

9.

Remove oil strainer.

10. Remove oil pump assembly.

11. Installation is in the reverse order of removal.

Disassembly and Assembly

EBS00GUV

●

Always replace with new oil seal and gasket.

●

When installing oil pump, apply engine oil to inner and outer rotors.

●

Be sure that O-ring is properly installed.

Inspection

EBS00GUW

Using a feeler gauge, straightedge and micrometers, check all of the following clearances:

Unit: mm (in)

●

If the tip clearance (2) exceeds the limit, replace rotor set.

WLC022

Oil pump housing to outer rotor radial 
clearance 1

0.114 - 0.200 (0.0045 - 0.0079)

Inner rotor to outer rotor tip clearance 2

Below 0.18 (0.0071)

Oil pump housing to inner rotor axial 
clearance 3

0.05 - 0.09 (0.0020 - 0.0035)

Oil pump housing to outer rotor axial 
clearance 4

0.050 - 0.110 (0.0020 - 0.0043)

Inner rotor brazed portion to housing 
clearance 5

0.045 - 0.091 (0.0018 - 0.0036)

SLC072B

OIL PUMP

LU-17

[VG33E and VG33ER]

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●

If body to rotor clearances (1, 3, 4, 5) exceed the limit,
replace oil pump body assembly.

Regulator Valve Inspection

EBS00GUX

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.

4.

If damaged, replace regulator valve set or oil pump assembly.

Oil Filter

EBS00GUY

The oil filter is a small, full-flow cartridge type and is provided with a
relief valve.

●

When changing oil filter. Refer to 

MA-31, "Changing Oil Fil-

ter"

 .

SLC073B

WLC020

SLC074B

SLC035B