BobCat 753 – HYDROSTATIC PUMP – Removal And Installation

Remove the engine/hydrostatic pump assembly from the loader. (See Hydraulic Pump Removal And Installation
on Page 30-40-8.)

Loosen the drive belt tensioner (Item 1) [Figure 30-40-3] and remove the drive belt.

Remove the hydrostatic pump drive pulley mounting nut (Item 2) [Figure 30-40-3] and washer.

Installation: Tighten the pump pulley mounting nut to 175-200 ft.-lbs. (237-271 Nm) torque.

Install a puller on the hydrostatic pump drive pulley and remove the pulley from the pump shaft [Figure 30-40-4].

Installation: Install the key in the hydrostatic pump shaft (Item 1) [Figure 30-40-5] before installing the pump drive

Hold the nut (Item 1) [Figure 30-40-6]on the two hydrostatic pump mounting bolts (Item 2) [Figure 30-40-5].

Remove the two hydrostatic pump mounting bolts (Item 2) [Figure 30-40-5] from the pump and drive belt housing.

Installation: Tighten the pump mounting bolts to 65-70 ft.-lbs. (88-95 Nm) torque.

Reverse the removal procedure to install the hydrostatic pump assembly.


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