BobCat S70 – HYDRAULIC PUMP – Disassembly And Assembly

NOTE: Always use new O-rings, gaskets, and seals when assembling the hydraulic pump.

Put the hydraulic pump in the vise.

Put a mark across the housing of the pump for correct assembly (Item 1) [Figure 20-60-10].

NOTE: Only the Seal Kit is available for the hydraulic pump. If any other parts are worn, replace the pump assembly.

Remove the eight bolts (Item 1 & 2) [Figure 20-60-11] from the pump.

Assembly: Tighten the bolts 25-28 ft.-lb. (33-38 N•m) torque.

NOTE: Use new washers under bolts (Item 1) [Figure 20-60-11] during assembly.

Remove the pump from the vise.

Remove the front cover (Item 1) [Figure 20-60-12] from the pump.

Remove the O-ring (Item 2) [Figure 20-60-12] from the front cover.

Remove the pressure plate (Item 3) [Figure 20-60-12] from the pump.

Remove the back-up ring (Item 1) and seal (Item 2) from the pressure plate (Item 3) [Figure 20-60-13].

Check the pressure plate for wear.

Remove the pump gears [Figure 20-60-14].

Check the gears for wear [Figure 20-60-14].

Remove the pump body (Item 1) [Figure 20-60-15] from the rear cover of the pump.

Remove the O-ring (Item 2) [Figure 20-60-15] from the rear cover.

Check the pump body and rear cover for wear.

Remove the washer (Item 1) from the front cover (Item 2) [Figure 20-60-16].


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