Loader Bobcat 853, 853H. Instruction - page 22

HYDRAULIC PUMP (Cont’d)

Removal And Installation

When making repairs on hydrostatic and
hydraulic systems, clean the work area before
disassembly and keep all parts clean. Always
use caps and plugs on hoses, tubelines and
ports to keep dirt out. Dirt can quickly damage
the system.

I–2003–0284

Raise the operator cab. (See Page 1–1.)

Drain the hydraulic reservoir. (See Page 1–1.)

Disconnect the hose (Item 1) [A] from the pump outlet.
Install a cap on the fitting.

Disconnect the tubeline from the inlet of the pump [A].

Remove the mump mounting bolts [B].

Remove the hydraulic pump [C].

Always clean up spilled fuel or oil. Keep heat,
flames, sparks or lighted tobacco away from
fuel and oil. Failure to use care around
combustibles can cause explosion or fire
which can result in injury or death.

W–2103–1285

NOTE: The hydraulic pump is shown being removed

with the hydrostatic pump/engine assembly
out of the loader for photo clarity. It can be
removed in the loader.

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–10950

1

C

P–04857

853, 853H BICS Loader

–2–37–

Service Manual

B

CD–10951

HYDRAULIC FLUID RESERVOIR

Removal And Installation

Raise the operator cab. (See Page 1–1.)

Disconnect the motor case drain hose from the case drain
filter (Item 1) [A].

Cap and plug the filter and hose. Remove the case drain
filter (Item 1) [A] (if so equipped) and drain the fluid into
a container.

Loosen and disconnect the reservoir outlet hose [B].

Remove the bolt and plate (Item 1) [C] from the mounting
strap.

Installation: Tighten the bolt to 16–20 ft.–lbs. (21–27
Nm) torque.

Remove the hydraulic reservoir from the loader.

A

P–00971

1

C

P–04858

1

–2–38–

853, 853H BICS Loader

Service Manual

B

CD–10954

LOCK VALVE (S/N 5103)

Removal And Installation

NOTE: The lock valve is optional for the (S/N 5102)

& the (S/N 5101) loaders.

Disconnect the two tubelines on the lock valve [A].

Remove the two (right) rear auxiliary hoses from the valve
[B].

Remove the two (left) rear auxiliary hoses from the lock
valve [C].

Remove the mounting bolt (Item 1) [C] and remove the
lock valve.

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

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

Always clean up spilled fuel or oil. Keep heat,
flames, sparks or lighted tobacco away from
fuel and oil. Failure to use care around
combustibles can cause explosion or fire
which can result in injury or death.

W–2103–1285

A

CD–10957

C

CD–10959

1

853, 853H BICS Loader

–2–39–

Service Manual

B

CD–10958

BUCKET POSITION VALVE (S/N 5102) & (S/N 5103)

Removal And Installation

NOTE: The bucket position valve is optional for the

(S/N 5101) loader.

Remove all the tubelines connected to the valve [A].

Remove the two mounting bolts and remove the valve
[B].

Installation: Tighten the mounting bolts to 15–16 ft.–lbs.
(20–22 Nm) torque.

Always clean up spilled fuel or oil. Keep heat,
flames, sparks or lighted tobacco away from
fuel and oil. Failure to use care around
combustibles can cause explosion or fire
which can result in injury or death.

W–2103–1285

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–10960

–2–40–

853, 853H BICS Loader

Service Manual

B

CD–10961

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