Model 4700 Maintenance Manual
Section 7. Component Procedures
Drive and Brake Figure 7-35.
Disc Removal
Drive Unit/Motor Assemblies Figure 7-36.
Expose Brake Pistons
Plug
Oil Inlets
17. Remove the three brake pistons. See Figure 7-37. Replace the brake piston seals. Figure 7-37.
16. Plug one of the oil inlets on the brake cover and blow low pressure compressed air into the other oil inlet to expose the brake pistons. See Figure 7-36.
Piston Removal
18. Reassemble in reverse order of disassembly. • torque the four brake cover mounting bolts to 50 ft. lb. (68 Nm). See Figure 7-34. • torque the two lower brake cover mounting bolts to 34 ft. lb. (46 Nm). See Figure 7-33. • torque the flange mounting bolts to 34 ft. lb. (46 Nm). See Figure 7-30. • torque the reduction gear mounting bolts to 207 ft. lb. (280 Nm). See Figure 7-28. 19. Bleed service brake. 20. Remove truck from jack.
Publication 1160093, Issued: 20 May 2013
7-33
