390F MHPU Mobile Hydraulic Power Unit Machine System Specifications Caterpillar


Swing Gear and Bearing

Usage:

390F B37


Illustration 1g03819005
Top view

Table 1
Item  Qty  Part  Specification Description 
Position “S” that is on inner race (7) relative to the carbody assembly (1) and bearing stopper (2). Refer to Illustration 1. 
16  8T-4136 Bolt  Before assembly, apply blue Loctite 243 to the threads.
Torque to 37 ± 4 N·m (27 ± 3 lb ft)


Illustration 2g03819006

Table 2
Item  Qty  Part  Specification Description 
8T-4139 Bolt  Before assembly, apply blue Loctite 243 to the threads. 
7Y-1095 Dowel  Apply Loctite C5A Copper Anti-Seize to the dowel holes. 
8T-4136 Bolt  Before assembly, apply blue Loctite 243 to the threads.
Torque to 20 ± 2 N·m (177 ± 18 lb in)
74  532-0243 Bolt  Before assembly, remove compound, oil, and dust from female threads, then apply Loctite C5A Copper anti-seize compound to the threads.
Use the following tightening procedure:

1. Tighten bolts to 800 ± 50 N·m (590 ± 37 lb ft).
2. Turn to an additional angle of 90 ± 5 degrees. 
Before assembly, apply 8C-8422 Sealant between the mating surfaces of the gear group and upper frame assembly. Apply sealant between the mating surfaces of the gear group and carbody assembly. 
10  48  461-3894 Bolt  Before assembly, remove compound, oil, and dust from female threads, then apply Loctite C5A Copper anti-seize compound to the threads.
Use the following tightening procedure:

1. Tighten bolts to 800 ± 50 N·m (590 ± 37 lb ft).
2. Turn to an additional angle of 70 ± 5 degrees. 

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