Kubota WSM 05-E4B Series User Manual

Thus, refer to the test pressure of each radiator
specification to do the leakage test.
T
ools required
•
Radiator tester and an adapter
1.
Fill a specified quantity of water into the radiator.
2. Set a radiator tester and an adapter on the radiator.
3. Increase the water pressure to the specified
pressure with the radiator tester and an adapter.
4. Check the radiator for water leakage.
Radiator water
leakage test
Service specifi-
cation
No leak at specified pres-
sure
NOTE
• For
water
leakages
from the pinhole, replace
the radiator or repair with the radiator
cement.
• When water leak is too much, replace the
radiator.
4.8 Checking opening temperature of
thermostat valve
Tools required
• Thermometer
1. Push
down the thermostat valve and put the thread
between the valve and the valve seat.
2. Put the thermostat and the thermometer in the
container and increase the temperature of the water
gradually.
3. Take the thread, and float the thermostat in the
water.
4. As the coolant temperature rises, the valve will
open, and the thermostat will separate from the
thread.
5. Measure the temperature at this moment.
Thermostat valve
opening tempera-
ture
Service specifica-
tion
69.5 to 72.5 ℃
157.1 to 162.5 ℉
6. Continue to increase
the temperature and read the
temperature when the valve full opens gap.
Valve full opens gap
Approx. 8 mm
Approx. 0.3 in.
Full opening tem-
perature
Service specifica-
tion
85 ℃
185 ℉
NOTE
• If
the
measurement
is out of the service
specifications, replace the thermostat.
4.9 Checking injection timing
1. Remove the injection pipes.
2. Turn the
flywheel counterclockwise (viewed from
flywheel side), until the fuel fills up to the hole of the
delivery valve holder (1) of No. 1 cylinder.
(1) Delivery valve holder
3. After
the fuel fills up to the hole of the delivery valve
holder
(1)
of No. 1 cylinder, turn back (clockwise)
the flywheel around 1.6 rad (90°).
4. Turn the flywheel counterclockwise to set at around
0.44 rad (25°) before T.D.C..
5. Slowly turn the flywheel counterclockwise and stop
turning, when the fuel begins to come up to get
present injection timing.
SERVICING
4. Checking and adjusting 4. ENGINE
05-E4B SERIES,05-E4BG SERIES
4-21
KiSC issued 03, 2023 A

Kubota WSM 05-E4B Series Specifications

General

Brand	Kubota
Model	WSM 05-E4B Series
Category	Engine
Language	English