Loader Bobcat 853, 853H. Manual — part 74
WATER PUMP
Removal And Installation
Remove the alternator belt.
Remove the water pump pulley [A].
Remove the water pump bolts [B].
Installation: Tighten the bolts to 11–18 ft.–lbs. (15–24
Nm) torque.
Remove the water pump from the engine block [C].
Disassembly
Remove the hub for the pulley using a press [D].
A
B–08951
C
B–08972
D
B–08429
853, 853H Loader
–7–85–
Service Manual
B
B–08950
WATER PUMP (Cont’d)
Disassembly (Cont’d)
Disassemble the water pump [A].
Check the bearing for abnormal noise, binding or wear
[B].
Replace the parts as needed.
Assembly
Apply a thin coat of liquid gasket cement to the outer
surface of the seal unit before assembly [C].
Press the bearing assembly into position by aligning the
set screw hole in the bearing with that in the pump body
[D].
A
B–08428
C
B–08432
D
B–08431
–7–86–
853, 853H Loader
Service Manual
B
B–08430
WATER PUMP (Cont’d)
Assembly (Cont’d)
After installation, check that the rear face of the impeller
has the correct height [A].
Height – 0.98 inch (24,8 mm)
Check the distance between the pulley hub and pump
body [B].
Distance – 3.12–3.14 inch (79,2–79,8 mm)
A
B–08433
0.98 ”
(24,8 mm)
853, 853H Loader
–7–87–
Service Manual
B
B–08434
3.12–3.14 ”
(79,2–79,8 mm)
THERMOSTAT
Removal And Installation
Remove the bolts from the thermostat housing [A].
Installation: Tighten the bolts to 10–17 ft.–lbs. (14–23
Nm) torque.
Remove the thermostat.
Checking The Thermostat
Check the thermostat opening temperature [B].
Standard – 176–183
°
F (80–84
°
C)
Check the thermostat valve lift.
Standard – Approximately 0.3 inch (7,6 mm) @ 203
°
F
(95
°
C)
If the thermostat housing assembly is removed, tighten
the bolts to 10–17 ft.–lbs. (14–34 Nm) torque [C].
A
B–08954
C
B–08419
–7–88–
853, 853H Loader
Service Manual
B
B–08435
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