Lubricating System; Checking; Servicing - wsm L503 Workshop Manual

L3130 · L3430 · L3830 · L4630 · L5030, WSM

[3] LUBRICATING SYSTEM

(1) Checking

(2) Servicing

Engine Oil Pressure
1. Remove the engine oil pressure switch, and set a oil pressure
tester (Code No.: 07916-32032).
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.
Rotor Lobe Clearance
1. Measure the clearance between lobes of the inner rotor and the
outer rotor with a feeler gauge.
2. Measure the clearance between the outer rotor and the pump
body with a feeler gauge.
3. If the clearance exceeds the factory specifications, replace the oil
pump rotor assembly.
Clearance between
inner rotor and outer Factory spec.
rotor
Clearance between
outer rotor and pump Factory spec.
body
1-S61
More than 49 kPa
Allowable
0.5 kgf/cm
limit
7 psi
294.2 to 441 kPa
Factory
2
3.0 to 4.5 kgf/cm
spec.
42.7 to 64 psi
245 kPa
Allowable
2
2.5 kgf/cm
limit
36 psi
0.03 to 0.14 mm
0.0012 to 0.0055 in.
0.11 to 0.19 mm
0.0043 to 0.0075 in.
KiSC issued 02, 2007 A
ENGINE
2
W1034952
W1035296