422F2, 427F2, 428F2, 432F2, 434F2 and 444F2 Backhoe Loaders Hydraulic and Steering System Caterpillar


Service Brake Control

Usage:

426 F2 DJ4


Illustration 1g06159577

Table 1
Specification for 391-9931 Service Brake Control Gp and 508-7693 Service Brake Control Gp 
Item  Qty  Part  Specification Description 
6V-7357 Bolt  Before assembly, apply blue Loctite 243 to the threads. 
385-5775 Connector As  Torque to 45 ± 5 N·m (33 ± 4 lb ft)
Bolt  Before assembly, apply blue Loctite 243 to the threads.
Torque to 10 ± 1 N·m (89 ± 9 lb in)
439-1974 Tee As  Torque to 110 ± 17 N·m (81 ± 13 lb ft)
Torque connector assembly or elbow assembly to 35 ± 3 N·m (26 ± 2 lb ft)


Illustration 2g06159583
Detailed view of area A

Table 2
Item  Qty  Part  Specification Description 
438-4654 Bushing  Before assembly, bore is 20.16 ± 0.04 mm (0.794 ± 0.002 inch)
206-1767 Spring  Free length is 38.7 ± 2.0 mm (1.52 ± 0.08 inch)
206-1768 Spring  Free length is 38.7 ± 2.0 mm (1.52 ± 0.08 inch)
148-8378 Elbow As  Torque to 25 ± 2 N·m (221 ± 18 lb in)
10  170-0967 Elbow As  Torque to 55 ± 6 N·m (41 ± 4 lb ft)
11  148-8325 Connector As  Torque to 26 to 29 N·m (230 to 257 lb in)

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