MITSUBISHI DIESEL ENGINE S4Q2-T Caterpillar


Lubrication System

Usage:

Removal of Lubrication System (1)

Removal of Lubrication System (2)

Disassembly Inspection and Reassembly Of Lubrication System

Oil Pump

Disassembly and Inspection of Oil Pump

Measurement of Clearance between Outer Rotor and Inner Rotor

Measure the clearance between the outer rotor and inner rotor, and, if the limit value is exceeded, replace the pump assembly.


Measurement of clearance between outer rotor and inner rotor

Measurement of Rotor and Case End Play

Measure the rotor and case end play, and, if the limit value is exceeded, replace the pump assembly.


Measurement of rotor and case end play

Measurement of Clearance Between Outer Rotor and Pump Case

Measure the clearance between the outer rotor and pump case, and, if the limit value is exceeded, replace the pump assembly.


Measure the clearance between the outer rotor and case

Reassembly of Oil Pump

Install the outer rotor to the pump case, check alignment mark (indentation) on the pump case cover, and then tighten the bolts. If the alignment marks are not aligned during the reassembly, the pump will not suck oil.


Alignment marks on pump case and pump case cover

Oil Filter and Oil Cooler

Disassembly and Inspection of Oil Filter and Oil Cooler

Relief Valve

Inspection of Relief Valve


Relief Valve

(1) Check the relief valve and valve seat for contact condition, and the spring for fatigue and damage, and replace any defective parts.

(2) Measure the valve opening pressure (oil pressure when the engine is running at rated rpm) of the relief valve, and, if the standard valve is exceeded, remove the cap bolt and make an adjustment by increasing or decreasing the shim thickness.

Engine oil pressure take-out port Next to oil filter - Rp 1/8 thread (PS 1/8)

Installation of Lubrication System (1)

Installation of Lubrication System (2)

Caterpillar Information System:

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MITSUBISHI DIESEL ENGINE S4Q2-T Engine Main Parts
MITSUBISHI DIESEL ENGINE S4Q2-T Overhaul Instructions
MITSUBISHI DIESEL ENGINE S4Q2-T Basic And Special Tools
MITSUBISHI DIESEL ENGINE S4Q2-T Maintenance Standards
MITSUBISHI DIESEL ENGINE S4Q2-T General
MITSUBISHI DIESEL ENGINE S4Q2-T Safety Cautions
MITSUBISHI DIESEL ENGINE S4Q2-T How to Use This Manual
MITSUBISHI DIESEL ENGINE S4Q2-T Introduction
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