Lubricating System; Cooling System - Kubota WG1605-G-E3 Workshop Manual

WG1605-G-E3,WG1605-L-E3,WG1605-GL-E3, WSM

(2) Lubricating System

(3) Cooling System

Engine Oil Pressure
1. Remove the engine oil pressure switch, and set an oil pressure
tester.
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 pressure switch
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 specification
(A) Deflection
1-S14
ENGINE
Factory 49 kPa
2
specifica- 0.50 kgf/cm
tion 7.1 psi
Factory 196 to 441 kPa
specifica- 2.00 to 4.49 kgf/cm
tion 28.5 to 63.9 psi
147 kPa
Allowable
2
1.50 kgf/cm
limit
21.3 psi
14.7 to 19.6 N·m
1.50 to 1.99 kgf·m
10.9 to 14.4 lbf·ft
9Y1210661ENS0008US0
7.0 to 9.0 mm
0.28 to 0.35 in.
9Y1210318GEG0001US0
KiSC issued 01, 2012 A
2