Lubricating System; Cooling System - Kubota M8540 Workshop Manual

M8540, M9540, WSM

(2) Lubricating System

(3) Cooling System

Engine Oil Pressure
1. Remove the oil switch and set a pressure tester (Code No.
07916-32031).
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.
At idle
speed
Engine oil pressure
At rated
speed
Tightening torque Oil switch taper screw
Fan Belt Tension
1. Measure the deflection (A), depressing the belt halfway between
the fan drive pulley and alternator pulley at specified force 98 N
(10 kgf, 22 lbf).
2. If the measurement is not within the factory specifications, loosen
the alternator mounting screws and relocate the alternator to
adjust.
Deflection (A) Factory spec.
(A) Deflection
1-S16
50 kPa
Allowable
2
0.5 kgf/cm
limit
7 psi
200 to 390 kPa
Factory
2
2.0 to 4.0 kgf/cm
spec.
29 to 56 psi
150 kPa
Allowable
2
1.5 kgf/cm
limit
21 psi
15 to 19 N·m
1.5 to 2.0 kgf·m
11 to 14 lbf·ft
W10349520
10 to 12 mm
0.40 to 0.47 in.
W1021011
ENGINE
KiSC issued 09, 2008 A