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Isuzu 4JH1 User Manual

Isuzu 4JH1
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6A – 24 ENGINE MECHANICAL
SERVICING
Servicing refers to general maintenance procedures to be performed by qualified service personnel.
RTW36ASH000401
MODEL IDENTIFICATION
Engine Serial Number
The engine number is stamped on the rear left hand side
of the cylinder body.
The engine number is stamped in the plate in front of the
engine room as well.
AIR CLEANER
Element cleaning procedures will vary according to the
condition of the element.
Dust Fouled Element (Except wet type element)
Rotate the element with your hand while applying
compressed air to the inside of the element. This will blow
the dust free.
Compressed air pressure kPa (kg/cm
2
/psi)
392 – 490 (4 – 5/57 – 71)
LUBRICATING SYSTEM
Main Oil Filter (Cartridge Type Paper Element)
Replacement Procedure
1. Drain the engine oil.
2. Retighten the drain plug.
3. Loosen the used oil filter by turning it counterclockwise
with a filter wrench.
Filter Wrench: 5-8840-0203-1
RTW36ASH000101
4. Clean the oil cooler fitting face. This will allow the new
oil filter to seat properly.
5. Apply a light coat of engine oil to the filter O-ring.
6. Turn in the new oil filter until the filter O-ring is fitted
against the sealing face.
7. Use the filter wrench to turn in the filter an additional
2/3 turns.
Filter Wrench: 5-8840-0203-1
8. Check the engine oil level and replenish to the
specified level if required.
130RY00003
6A-6

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Isuzu 4JH1 Specifications

General IconGeneral
Bore x Stroke95.4 mm x 104.9 mm
Compression Ratio18.5:1
Fuel SystemDirect injection
Cylinder ConfigurationInline-4
Valves per Cylinder4
Fuel TypeDiesel
Engine TypeDiesel, four-stroke
Displacement3.0 liters
Maximum Torque217 lb-ft (294 Nm) @ 1800 rpm
Oil Capacity6.5 liters (with filter)

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