Loader Bobcat 773. Manual - part 58

AXLE SEAL (Cont’d)

Removal And Installation (Cont’d)

Remove the key (Item 1) [A] from the axle.

Drill a small hole in the axle seal.

Install a slide hammer (Item 1) [B] with a screw tip end in
the axle seal.

Remove the axle seal.

Installation: MEL1399 seal driver tool is necessary for
the following procedure:

Clean the seal area and inspect the shaft for wear.

Place the new axle seal over the axle and into the axle
tube.

Install MEL1399 seal driver tool over the axle and put
against the axle seal [C].

Hit the seal driver tool with a hammer until the tool is flush
with the edge of the axle tube [C].

Reverse removal procedure to install the axle hub and
wheel assembly.

NOTE: If the shaft is damaged or worn, an axle repair

sleeve kit is available from Melroe Parts Sales
in Chicago.

A

P–04161

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C

P–04160

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AXLE, SPROCKET AND BEARINGS

Removal And Installation

The tools listed are needed for the following procedure:

MEL1242 – Power Ram
MEL1202B – Axle Bearing Service Set

NOTE: The procedure shown is for removing the

front axle, bearings and sprocket. This
procedure can also be used for the rear axle,
bearings and sprocket. (See Page 4–10 for
rear chaincase cover removal.)

Raise the lift arms and install an approved lift arm support

device. (See Page 1–1.)

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

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

Remove the parking brake mounting bolts. (See Pge

4–3.)

Remove the eight front cover mounting bolts (Item 1) [A]

and the front cover (Item 2) [A] from the chaincase.

Loosen the axle sprocket mounting bolt (Item 1) [B].

Lift and block the loader. (See Page 1–1.)

Remove the fluid from the chaincase. (See Page 4–8.)

Remove the axle hub. (See Page 4–19.)

Remove the sprocket mounting bolt (Item 1) [B].

Installation:  Tighten the sprocket mounting bolt to

220–245 ft.–lbs. (298–332 Nm) torque.

Install the MEL1242 power ram (Item 1) [C] between the

two sprockets.

Put a spacer between the power ram and axle. Push the

axle out to the end of the power ram stroke. Add another

spacer and push the axle again. Repeat this procedure

until the axle is free from the sprocket and inner bearing.

Remove the drive chain from the sprocket (Item 1) [D]

and remove the sprocket from the chaincase.

Remove the inner bearing (Item 2) [D] and remove the

axle from the axle tube. (See Page 4–23 for outer bearing

removal from the axle.)

Installation: Pack both axle bearings with grease before

installing them.

Use jackstands to support the rear of the loader. (The
loader wheels should remain on the ground.)

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

Revised June 01

A

P–04144

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2

C

P–04158

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D

P–04162

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1

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P–04147

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AXLE, BEARINGS AND SPROCKET (Cont’d)

Removal And Installation (Cont’d)

A bearing puller (Item 1) [A] is needed for the following
procedure:

Put the axle/outer bearing assembly in the bearing puller
as shown and put in the hydraulic press [A].

Be sure the bearing puller makes good contact with the
inner race of the bearing and press the bearing off the
mounting surface of the axle.

Be sure to hold onto the axle during removal as it will slide
freely along the axle shaft after removal from the bearing
mounting surface and until the bearing contacts the spline
on the shaft.

Press the splined end of the axle free from the bearing
[B].

Installation:  A piece of round tubing (Item 1) [C] is
needed to install the bearing on the axle shaft. The tubing
needs to measure approximately 0.500 inch (12,7 mm) to
1.0 inch (25,4 mm) in length. The inside diameter of the
tubing should not be under 2.100 inches (53,3 mm) and
the outside diameter should not be over 2.400 inches (60
mm),

A bearing puller (Item 2) [C] is also needed to install the
bearing on the axle.

Put the tubing (Item 1) [C] on the bearing puller (Item 2)
[C].

Put the bearing (Item 3) [C] on the tube as shown.

Put the spline end of the axle shaft (Item 4) [C] in the
bearing and press the bearing onto the axle.

Be sure to hold onto the axle during installation, as it will
slide freely along the axle shaft after the spline end has
passed through the bearing and until it reaches the
bearing mounting surface on the axle.

When the bearing reaches the bearing mounting surface,
continue the installation until the bearing is fully seated
[D].

A

P–04170

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C

P–04169

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4

3

2

D

P–04175

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P–04171

AXLE, BEARINGS AND SPROCKET (Cont’d)

Removal And Installation (Cont’d)

Use the tools provided in the MEL1202B Axle Bearing
Service Set for bearing cup removal and installation. A
slide hammer is also necessary for this procedure.

Use the long rod and bearing cup tool to remove the inner
bearing cup [A].

Hit the long rod with a hammer to remove the bearing cup
from the axle tube [A].

To remove the outer bearing cup, place the bearing cup
tool (Item 1) [B] on the slide hammer.

Leave the bearing cup tool loose until the tool is installed
inside the tube [B].

After the bearing cup tool is inside the axle tube, pull the
tool against the bearing cup and tighten the nut (Item 2)
[B] on the tool.

Use the slide hammer and remove the bearing cup from
the axle tube [C].

A

P–04172

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P–04180

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P–04179

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1