Loader Bobcat 773. Instruction - page 55

CHAINCASE FLUID

Removing Oil From The Chaincase

To drain the oil from the chaincase, remove the cover
(Item 1) [A] which is installed over the drain plug at the
rear of the chaincase.

Installation: tighten the cover mounting bolts to 190–200
in–lbs (21,5–27 Nm) torque.

Remove the drain plug (Item 1) [B] and drain the oil into
a container.

Check the drain plug gasket and replace if necessary.

Revised Jan. 99

A

P–01616

1

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P–01619

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CHAINCASE COVERS

Center Chaincase Cover Removal And Installation

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

Disconnect and remove the engine speed control from
the control panel. (See Page 7–1.)

Remove the control panel from the loader. (See Page
3–1.)

Disconnect the lift control cross bar (Item 1) [A] from the
lift pedal linkage.

Disconnect the lift control cross bar (Item 1) [A] from the
lift spool on the main control valve.

Disconnect the electrical connector (Item 1) [B] from the
parking brake pedal sensor.

Remove the two mounting bolts (Item 1) [C] from the
traction lock assembly (Item 2) [C] on the center
chaincase cover. (See Page 8–1.)

Installation: Tighten the mounting bolts for the traction
lock assembly to 25–28 ft.–lbs. (34–38 Nm) torque.

Remove the traction lock assembly (Item 2) [C] from the
chaincase cover. (See Page 8–1.)

Remove the ten chaincase cover mounting bolts (Item 1)
[D].

Installation: Tighten the cover mounting bolts to 25–28
ft.–lbs. (34–38 Nm) torque.

NOTE: Photo’s may be different but the procedure is

the same for all models.

Revised Jan. 99

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

Raise the loader lift arms and install an approved lift arm
support device. (See Page 1–1.)

A

P–04098

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C

P–04101

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1

D

P–04140

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P–04132

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CHAINCASE COVERS (Cont’d)

Center Chaincase Cover Removal And Installation
(Cont’d)

Remove the center chaincase cover from the loader [A].

Installation: The chaincase cover has a gasket (Item 1)
[B] installed between the cover and the chaincase. Install
a new gasket if necessary.

Reverse the removal procedure to install the chaincase
cover.

Front Chaincase Cover Removal And Installation

Remove parking brake. (See Page 4–3.)

Remove the eight front chaincase cover mounting bolts
(Item 1) [C].

Installation: Tighten the mounting bolts to 25–28 ft.–lbs.
(34–38 Nm) torque.

Remove the front chaincase cover (Item 2) [C] from the
loader.

Installation: The front chaincase cover (Item 2) [C] has
a gasket installed between the cover and the chaincase
as shown in photo [B]. Install new gasket if necessary.

Rear Chaincase Cover Removal And Installation

Disconnect the front steering linkage bars from the rear
linkage bars. (Refer to CONTROL PANEL Page 3–1 for
correct procedure.)

Move the linkage bars to allow adequate space to remove
the rear chaincase cover.

Remove the eight rear chaincase cover mounting bolts
(Item 1) [D].

Installation: Tighten the mounting bolts to 25–28 ft.–lbs.
(34–38 Nm) torque.

Remove the rear chaincase cover (Item 2) [D] from the
loader.

Installation: The rear chaincase cover (Item 2) [D] has
a gasket installed between the cover and the chaincase
as shown in photo [B]. Install a new gasket if necessary.
(Refer to STEERING LINKAGE Adjustment Page 3–1 to
adjust neutral if necessary.)

NOTE: Photo’s may be different but the procedure is

the same for all models.

Revised June 01

A

P–04137

C

P–04144

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1

D

P–04155

2

1

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P–04152

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MOTOR CARRIER

Shaft Seal Replacement

The tool listed is necessary for the following procedure:

MEL1420 – Carrier Seal Tool

Remove the hydrostatic motor. (See Page 3–1.)

Wear safety glasses to prevent eye injury when
any of the following conditions exist:

W–2019–1285

When fluids are under pressure.

Flying debris or loose material is present.

Engine is running.

Tools are being used.

The motor carrier seal (Item 1) [A] is located on the
outside of the motor carrier shaft.

Drill a .125 inch (3 mm) hole in the motor carrier seal [B].

Use a slide hammer to remove the seal from the motor
carrier shaft [C].

Installation: Install a new seal over the motor carrier
shaft [D].

A

P–04153

1

C

P–04455

D

P–04454

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P–04456

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