wsm Kubota L4100, Workshop Manual

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ENGINE L4100, WSM
1-S12
(EU)
(4) Engine Oil Pressure
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
(When reassembling)
• After checking the engine oil pressure, tighten the engine oil
pressure switch to the specified torque.
9Y1210278ENS0007US0
(5) Fan Belt
Fan Belt Tension
1. Measure the deflection (A) , depressing the belt halfway
between the fan drive pulley and alternator pulley at specified
force 68.6 N (7.00 kgf, 15.4 lbf).
2. If the measurement is not within the factory specifications,
loosen the alternator mounting screws and relocate the
alternator to adjust.
9Y1210278ENS0098US0
Engine oil pressure
At idle
speed
Factory
specifica-
tion
More than
98 kPa
1.0 kgf/cm
2
14 psi
Allowable
limit
49 kPa
0.50 kgf/cm
2
7.1 psi
At rated
speed
Factory
specifica-
tion 294 to 441 kPa
3.00 to 4.50 kgf/cm
2
42.7 to 64.0 psi
Allowable
limit
245 kPa
2.50 kgf/cm
2
35.6 psi
Tightening torque Oil pressure switch
14.7 to 19.6 N·m
1.50 to 2.00 kgf·m
10.9 to 14.4 lbf·ft
Deflection (A) Factory specification
12 mm
0.471 in.
(A) Deflection
KiSC issued 08, 2012 A