BobCat 753 – HYDROSTATIC MOTOR – Carrier Shaft Seal Replacement

The tool listed is necessary for the following procedure:

MEL1420 – Carrier Seal Tool

Remove the hydrostatic motor. (See Removal And Installation on Page 30-20-1.)

The motor carrier seal (Item 1) [Figure 30-20-49] is located on the outside of the motor carrier shaft.

Drill a.125 inch (3 mm) hole in the motor carrier seal [Figure 30-20-50].

Use a slide hammer to remove the seal from the motor carrier shaft [Figure 30-20-51].

Installation: Install a new seal over the motor carrier shaft [Figure 30-20-52].

Installation: Install MEL1420 Carrier Seal Tool over the carrier seal [Figure 30-20-53].

Hit the tool with a hammer until the seal is fully seated on the carrier shaft [Figure 30-20-53].

Photo [Figure 30-20-54] shows the motor carrier seal correctly installed.

NOTE: Before reinstalling the hydrostatic motor, check the plug (Item 1) [Figure 30-20-54]
located in the center of the carrier shaft for tightness. If the plug becomes loosened, case drain lubrication oil                from the hydrostatic motor can leak into the chaincase.


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