140M and 150 Motor Grader Power Train Service Brake (Wheel Spindle) - Disassemble Caterpillar

Disassembly Procedure

Start By:

1. Remove the service brake and the wheel spindle.

Note: Inspect the O-ring seals. Replace the O-ring seals that are worn or damaged.

Show/hide table

Illustration 1	g01349310

1. Use Tooling (A), Tooling (C), and a suitable lifting device to position service brake (1) onto Tooling (B). The weight of service brake (1) is approximately 234 kg (515 lb).
   Show/hide table

   Illustration 2	g01349321

2. Remove bolts (2). Remove retainer (3).
   Show/hide table

   Illustration 3	g01416526

   Note: Note the quantity, order, and thickness of the shims.

3. Remove shims (4). Use Tooling (C) and a suitable lifting device to remove sprocket (5). The weight of sprocket (5) is approximately 19 kg (42 lb).
   Show/hide table

   Illustration 4	g01416520

   Show/hide table

   Personal injury can result from being struck by parts propelled by a released spring force. Make sure to wear all necessary protective equipment. Follow the recommended procedure and use all recommended tooling to release the spring force.

4. Remove bolts (6).
   Show/hide table

   Illustration 5	g01416492

   Show/hide table

   Illustration 6	g01349519
   typical example

5. Remove O-ring seal (7). Use Tooling (D) to remove bearing cone (8). Use Tooling (A) and a suitable lifting device to remove cover (9). The weight of cover (9) is approximately 32 kg (70 lb).
   Show/hide table

   Illustration 7	g01349344

6. Remove bearing cup (10) from cover (9).
   Show/hide table

   Illustration 8	g01416489

7. Remove springs (11). Remove plates (12) and discs (13).

   Note: Note the quantity and the order of plates (12) and discs (13).

   Show/hide table

   Illustration 9	g01416488

8. Remove piston (14). Remove dowels (15) and, if equipped, remove the spacers. Remove hub (16).
   Show/hide table

   Illustration 10	g01349359

9. Remove seals (17) from piston (14).
   Show/hide table

   Illustration 11	g01349430
   typical example

10. Use Tooling (A) to remove housing (18). The weight of housing (18) is approximately 57 kg (125 lb). Position housing (18) onto suitable blocking.
    Show/hide table

    Illustration 12	g01349436

11. Remove Duo-Cone seal (19). Refer to Disassembly and Assembly, "Duo-Cone Conventional Seals - Remove". Remove bearing cup (20).
    Show/hide table

    Illustration 13	g01349462

12. Remove Duo-Cone seal (19). Refer to Disassembly and Assembly, "Duo-Cone Conventional Seals - Remove".
    Show/hide table

    Illustration 14	g01349453

13. Use Tooling (E) to remove bearing cone (21).