336E Excavator and 336E MHPU Mobile Hydraulic Power Unit Machine Systems Swing Gear and Bearing - Remove Caterpillar

Removal Procedure

Start By:

1. Remove the undercarriage frame.

1. Remove all of the grease from the swing gear and bearing. Put the grease in a suitable container for storage or disposal.
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   Illustration 1	g00520664

2. Put an alignment mark on swing gear and bearing (1) and on the undercarriage frame assembly for assembly purposes. Attach Tooling (A) and a suitable lifting device to swing gear and bearing (1), as shown. Apply slight lifting tension to swing gear and bearing (1).
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   Illustration 2	g00520670

3. Use Tooling (B) in order to remove bolts (2) and the spacers that hold swing gear and bearing (1) to the undercarriage frame.

4. Remove swing gear and bearing (1). The weight of swing gear and bearing (1) is approximately 640 kg (1410 lb).
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   Illustration 3	g02128394

   Note: Inner dust seal (3) and outer dust seal (4) may have been installed dry in the swing gear and bearing or inner dust seal (3) and outer dust seal (4) may have been bonded to the swing gear and bearing.

5. Remove inner dust seal (3) and outer dust seal (4) from the swing gear and bearing.

6. Clean the seal grooves of the inner dust seal and the outer dust seal with a fine grit sandpaper. Use a cleaning solvent to clean the sealing grooves. Make sure that the seal grooves are thoroughly clean and dry prior to installing the new dust seals.