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

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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–

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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)

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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–

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Service Manual

B

B–08435