Lubricating System - Kubota L3540 Workshop Manual

L3540, L4240, L5040, L5240, L5740, WSM

[2] LUBRICATING SYSTEM

Engine Oil Pressure
1. Remove the engine oil pressure switch, and set an oil pressure
tester (Code No.: 07916-32032). (Adaptor screw size : PT 1/8)
2. Start the engine. After warming up, measure the oil pressure of
both idling and rated speeds.
3. If the oil pressure is less than the allowable limit, check the
following.
• Engine oil insufficient.
• Oil pump defective
• Oil strainer clogged
• Oil filter cartridge clogged
• Oil gallery clogged
• Excessive oil clearance
• Foreign matter in the relief valve
At idle
speed
Engine oil pressure
At rated
speed
(When reassembling)
• After checking the engine oil pressure, tighten the engine oil
pressure switch to the specified torque.
Tightening torque Oil pressure switch
1-S14
More than 98 kPa
Factory
1.0 kgf/cm
spec.
14 psi
50 kPa
Allowable
2
0.5 kgf/cm
limit
7 psi
300 to 440 kPa
Factory
2
3.0 to 4.5 kgf/cm
spec.
43 to 64 psi
250 kPa
Allowable
2
2.5 kgf/cm
limit
36 psi
15 to 20 N·m
1.5 to 2.0 kgf·m
11 to 14 lbf·ft
W1034952
ENGINE
2
KiSC issued 04, 2010 A