BobCat 753 – DRIVE COMPONENTS – Axle Seal Removal And Installation

The tools listed are needed for the following procedure:

Axle Hub Puller Tool

MEL1399 – Seal Driver Tool

MEL1242 – Power Ram (may be used if desired)

To loosen the axle hub mounting bolt (Item 1) [Figure 40-20-1], use the following procedure:

Before lifting and blocking the loader, loosen the hub mounting bolt (Item 1) [Figure 40-20-1].

NOTE: If the axle and bearings are being replaced, also loosen the sprocket mounting bolt inside the chaincase before lifting and blocking the loader. (See Axle Sprocket And Bearings Removal And Installation on Page 40-20-3.)

Lift and block the loader. (See LIFTING AND BLOCKING THE LOADER on Page 10-10-1.)

Remove the front tire/wheel assembly.

Installation: Tighten the wheel mounting nuts to 105-115 ft.-lbs. (142-156 Nm) torque.

Remove the hub mounting bolt (Item 1) [Figure 40-20-1] and washer from the axle.

Installation: Tighten the hub mounting bolt to 575-625 ft.-lbs. (780-848 Nm) torque.

Remove two of the wheel mounting studs (Item 2) [Figure 40-20-1].

Use a wheel mounting nut on each stud and remove the two studs with a hammer.

Installation: Support the flange of the axle hub and install the two studs with a hammer. A hydraulic press
can also be used to install the studs.

Install the puller tool (Item 1) [Figure 40-20-2] on the axle hub.

A driver tool (Item 2) [Figure 40-20-2] can be used for centering the threaded rod of the puller.

Use a wrench with the puller and remove the axle hub from the axle tube. A spacer and a power ram can be
used between the axle and the tool if available, instead of the wrench, threaded rod and driver tool.

Remove the key (Item 1) [Figure 40-20-3] from the axle.

Drill a small hole in the axle seal.

Install a slide hammer (Item 1) [Figure 40-20-4] 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.

NOTE: If the shaft is damaged or worn, an axle repair sleeve kit is available from Bobcat Parts Sales in Chicago.

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 [Figure 40-20-5].

Hit the seal driver tool with a hammer until the tool is flush with the edge of the axle tube [Figure 40-20-5].

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

 

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