Lubricating System; Cooling System - wsm B2420 Workshop Manual

B2420, WSM

(2) Lubricating System

(3) Cooling System

Engine Oil Pressure
1. Remove the engine oil pressure switch, and set a oil pressure
tester (Code No. 07916-32032). (Adapter 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
Factory
specifica-
tion
Engine oil pressure
Allowable
limit
(When reassembling)
• After checking the engine oil pressure, tighten the engine oil
pressure switch to the specified torque.
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-S12
ENGINE
More than
At idle 49 kPa
2
speed 0.50 kgf/cm
7.1 psi
197 to 441 kPa
At rated
2.00 to 4.50 kgf/cm
speed
28.5 to 64.0 psi
147 kPa
At rated
2
1.50 kgf/cm
speed
21.3 psi
14.7 to 19.6 N·m
1.5 to 2.0 kgf·m
11 to 14 lbf·ft
9Y1210436ENS0006US0
7.0 to 9.0 mm
0.28 to 0.35 in.
9Y1210436ENS0007US0
KiSC issued 06, 2012 A
2