Isuzu D-Max / Isuzu Rodeo (TFR/TFS). Manual — part 579

6A – 154 ENGINE MECHANICAL

OIL PUMP AND OIL FILTER

The 4J series engine is equipped with a gear type oil pump.
The oil filter and the water cooled oil cooler integrated a single unit to increase the cooling effect.

Except 4JA1

For 4JA1

ENGINE MECHANICAL 6A – 155

OIL PUMP

DISASSEMBLY

051L200001

Disassembly Steps

1.

Oil pipe

4.

Driven gear with bush

2.

Strainer

5.

Relief

valve

asm.

3.

Pump

cover

6.

Oil

pump

body

6A – 156 ENGINE MECHANICAL

INSPECTION AND REPAIR

Make the necessary adjustments, repairs, and part replacements if excessive wear or damage is discovered during
inspection.

Gear Teeth and Body Inner Wall Clearance

Use a feeler gauge to measure the clearance between the
gear teeth and the body inner wall.
If the clearance between the gear teeth and the body inner
wall exceeds the specified limit, either the gear or the body
must be replaced.
Gear Teeth and Body Inner Wall Clearance

mm (in)

Standard Limit

0.14 (0.0055)

0.20 (0.0079)

Gear and Body Clearance

Use a feeler gauge to measure the clearance between the
body and the gear.
If the clearance between the gear and the body exceeds
the specified limit, the body must be replaced.
Gear and Body Clearance

mm (in)

Standard Limit

0.06 (0.024)

0.15 (0.0059)

ENGINE MECHANICAL 6A – 157

REASSEMBLY

051L200002

Reassembly Steps

1.

Oil pump body

4.

Strainer

2.

Driven gear with bush

5.

Relief valve asm.

3.

Pump

cover

6.

Oil pipe