Loader Bobcat 853, 853H. Manual - part 70

CRANKSHAFT GEAR

Removal And Installation

The tools listed will be needed to do the following
procedure:

MEL1263 – Crankshaft Gear Installer
MEL1264 – Crankshaft Rear Oil Seal

Use a puller to remove the gear [A].

Use the correct size driver tool to install the gear [B].

Clean the crankshaft and check that all the oil passages
are clean and open.

Clean the engine block, lubricate and install the upper
halves of the main bearings.

Put the crankshaft carefully in position.

Install the main bearing caps and bolts. (See Page 7–64.)

Check the crankshaft so that it rotates freely. Check the
end play. (See Page 7–66.)

Install a new rear oil seal [C]. Using the correct size driver
tool.

Lubricate the connecting rod bearings. Install the
bearings and rod caps. (See Page 7–62.)

Install the oil pump. (See Page 7–82.)

Install the oil pan. (See Page 7–81.)

Install the timing gears, timing gearcase cover and new
front seal. (See Page 7–81.)

Install the flywheel. (See Page 7–37.)

A

B–08249

C

B–08261

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B

B–08250

TIMING GEARCASE COVER SEAL

Removal And Installation

The tool listed will be needed to do the following
procedure:

MEL1265 – Crankshaft Front Oil Seal Installer

Remove the alternator and belt. (See Page 6–1.)

Remove the bolt at the crankshaft pulley [A].

Installation:  Tighten the bolt to 123–152 ft.–lbs.
(167–206 Nm) torque.

Install a standard puller and remove the crankshaft pulley
[B].

Use a screwdriver and pry the front seal out of the timing
case cover [C].

Use the seal installation tool and install the new seal [D].

A

B–08945

C

B–08946

D

B–08948

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Service Manual

B

B–08943

B–08983

TIMING GEARCASE COVER

Removal And Installation

Remove the alternator and belt. (See Page 6–1.)

Remove the bolt at the crankshaft pulley [A].

Installation:  Tighten the bolt to 123–152 ft.–lbs.
(167–206 Nm) torque.

Use a puller to remove the crankshaft pulley [B].

Remove the bolts which fasten the noise dampening
shield to the timing case cover [C].

Remove the noise dampening shield [D].

A

B–08945

C

B–08947

D

B–08942

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B

B–08943

TIMING GEARCASE COVER (Cont’d)

Removal And Installation (Cont’d)

Remove the bolts from the timing gearcase cover [A].

Installation:  Tighten the bolts to 10 ft.–lbs. (14 Nm)
torque.

Use an allen wrench to remove the allen head bolt from
the cover [B].

Installation:  Tighten the bolt to 11–17 ft.–lbs. (15–23
Nm) torque.

Remove the timing gearcase cover [C].

Installation:  Put the O–ring gasket in the groove and
hold it in position using Form–A–Gasket so it will not fall
out when installing the cover [D].

A

B–08940

C

B–08974

D

B–08956

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Service Manual

B

B–08941