Loader Bobcat 853, 853H. Manual — part 28

HYDROSTATIC MOTOR (Cont’d)

Removal And Installation (Cont’d)

Remove the hydrostatic motor from the gearcase.

Installation: Replace the large O–ring (Item 1) [A] and
face seals on the motor fittings before installing the motor
Inspect and clean or replace case drain filters (Item 1) [B]
& [C] during motor repair or replacement.

NOTE: The case drain filters were added at (S/N

510125001 & Above), (S/N 510250001 &
Above) and (S/N 510370001 & Above) on the
loaders.

SEE THE COMPONENT REPAIR MANUAL FOR
HYDROSTATIC MOTORS FOR DISASSEMBLY AND
ASSEMBLY PROCEDURE.

B

P–00972

1

A

P–04799

1

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Service Manual

C

P–00969

1

HYDROSTATIC CHARGE OIL FILTER

Removal And Installation

Disconnect the temperature switch wire from the
hydrostatic filter [A].

Disconnect the differential pressure switch wire from the
filter [B].

Remove the inlet tubeline from the hydrostatic filter [C].

Disconnect the charge pump inlet hose from the filter [D].

Never work on a machine with the lift arms up
unless the lift arms are secured by an approved
lift arm support device. Failure to use an
approved lift arm support device can allow the
lift arms or attachment to fall and cause injury
or death.

W–2059–0598

A

CD–10993

C

CD–10995

D

CD–10996

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Service Manual

B

CD–10994

HYDROSTATIC CHARGE OIL FILTER (Cont’d)

Removal And Installation (Cont’d)

Remove the four mounting bolts [A].

Installation: Tighten the mounting bolts to 25 ft.–lbs. (34
Nm) torque.

Remove the hydrostatic filter and housing [B].

A

CD–10997

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Service Manual

B

Cd–10998

COLD OIL BY–PASS VALVE

Removal And Installation

Never work on a machine with the lift arms up
unless the lift arms are secured by an approved
lift arm support device. Failure to use an
approved lift arm support device can allow the
lift arms or attachment to fall and cause injury
or death.

W–2059–0598

Remove the cold oil by–pass valve plug, spring and
poppet to check for damage [A].

Replace the plug, spring and poppet if necessary.

Disconnect the cold oil by–pass valve outlet tubeline [B].

Disconnect the charge pump outlet hose from the tee on
the by–pass valve [C].

Disconnect the oil cooler inlet tubeline from the tee fitting
[D].

A

CD–10999

C

CD–11001

D

CD–11002

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Service Manual

B

CD–11000