Kubota WSM 07-E3B Series Workshop Manual page 128

07-E3B SERIES, WSM
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 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 (1) and an adaptor (2) on the radiator cap.
2. Apply the specified pressure of 88 kPa (0.90 kgf/cm
measure the time for the pressure to fall to 59 kPa (0.60 kgf/cm
8.5 psi).
3. If the measurement is less than the factory specification, replace
the radiator cap.
Pressure falling time Factory spec.
(1) Radiator Tester
Radiator Water Leakage
1. Pour a specified amount of water into the radiator.
2. Set a radiator tester (1) and an adaptor (2) and raise the water
pressure to the specified pressure.
3. Check the radiator for water leaks.
4. For water leak from the pinhole, replace the radiator or repair with
the radiator cement. When water leak is excessive, replace the
radiator.
Radiator water leakage
Factory spec.
test pressure
NOTE

• The pressure of the leak test is different from each radiator
specification.
Thus, do the leak test, refer to the test pressure of each
radiator specification.
(1) Radiator Tester
S-25
ENGINE
(B) Bad
W1021108
2
, 13 psi), and
More than 10 seconds
for pressure fall
88  59 kPa
(0.90  0.60 kgf/cm
13  8.5 psi)
(2) Adaptor
W1054156
No leak at specified
pressure
(2) Adaptor
W1016903
KiSC issued 06, 2020 A
2
,
2
,