Cooling System; Checking And Adjusting - Nanni 5.280HE Workshop Manual

03-M Series, WSM

4. COOLING SYSTEM

[1] CHECKING AND ADJUSTING

CAUTION
• When removing the radiator cap, wait at least ten minutes after the engine has stopped and cooled down.
Otherwise, hot water may gush out, scalding nearby people.
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 lbs).
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
Fan Belt Damage and Wear
1. Check the fan belt for damage.
2. If the fan belt is damaged, replace it.
3. Check if the fan belt is worn and sunk in the pulley groove.
4. If the fan belt is nearly worn out and deeply sunk in the pulley
groove, replace it.
(A) Good
Radiator Cap Air Leakage
1. Set a radiator tester and adaptor on the radiator cap.
2. Apply the specified pressure 88 kPa (0.9 kgf/cm
measure the time for the pressure to fall to 59 kPa (0.6 kgf/cm
9 psi).
3. If the measurement is less than the factory specification, replace
the radiator cap.
Pressure falling time Factory spec.
S-92
DIESEL ENGINE
7.0 to 9.0 mm
0.28 to 0.35 in.
W1035667
(B) Bad
W1020602
2
, 13 psi), and
More than 10 seconds
for pressure fall from
88 to 59 kPa
(from 0.9 to 0.6 kgf/cm
from 13 to 9 psi)
W10387530
KiSC issued 08, 2012 A
2
,
2
,