Challenger 35, Challenger 45 and Challenger 55 Agricultural Tractors Power Train Caterpillar

Show/hide table

Illustration 1	g00691888

Show/hide table

Illustration 2	g00691691

Note: Illustration (A) has the bolt pattern for the following serial number range: (S/N: 8DN850-UP) (S/N: 7DM850-UP) (S/N: 1DR1700-UP). Illustration (B) has the bolt pattern for the following serial number range: (S/N: 8DN1-849) (S/N: 7DM1-849) (S/N: 1DR1-1699).

1. Apply Loctite 5188 to the center housing (2).
   Show/hide table

   Illustration 3	g00691903

2. Place the transmission and the extension housing in position with the center housing.
   Show/hide table

   Illustration 4	g00691911

3. Rotate the coupling (44) until the coupling aligns with the pinion shaft (45). Turn the yoke on the end of transmission until the power take-off shaft (PTO) aligns with the splines in the pump drive gear (43).
   Show/hide table

   Illustration 5	g00691690

4. Install bolts (46) and tighten to a torque of 570 ± 80 N·m (420 ± 60 lb ft).
   Show/hide table

   Illustration 6	g00691603

5. Install bolts (41). Tighten the larger bolts to the torque of 300 ± 40 N·m (220 ± 30 lb ft). Tighten the smaller bolts to the torque of 120 ± 20 N·m (90 ± 15 lb ft).
   Show/hide table

   Illustration 7	g00691599

6. Use Tooling (B) in order to raise transmission (36) above the hardbar in order to remove the blocks.
   Show/hide table

   Illustration 8	g00691583

   Note: The right side transmission mount must be in the vertical position.

7. Use Tooling (B) in order to lower transmission (36) in place.
   Show/hide table

   Illustration 9	g00691592

   Note: Breather (39) is mounted on the extension housing for the following serial numbers: (S/N: 8DN1-885) (S/N: 1DR1-1767) (S/N: 7DM1-954).

   Note: Breather (39) is mounted on the cab for the following serial numbers: (S/N: 8DN886-UP) (S/N: 1DR1768-UP) (S/N: 7DM955-UP).

8. Install breather (39) on extension housing (35).
   Show/hide table

   Illustration 10	g00691586

9. Install six bolts and washers (38) to transmission mounting brackets (37). Tighten bolts (38) to a torque of 800 ± 100 N·m (590 ± 75 lb ft). Repeat this procedure for the other side. Remove Tooling (B).
   Show/hide table

   Illustration 11	g00691581

10. Install hose assembly (34) to extension housing (35).
    Show/hide table

    Illustration 12	g00691571

11. Attach the quick disconnect fitting (33) for the charge pressure to the electronic control valve for the transmission .
    Show/hide table

    Illustration 13	g00691562

12. Apply Loctite 595 on the center housing and install cover (32). Install bolts and washers (31).
    Show/hide table

    Illustration 14	g00691551

    Note: Inspect the O-ring seal on the end of the steering pump. If the O-ring seal is damaged, replace the O-ring seal.

13. Use a lifting strap with a suitable lifting device in order to lower the steering pump (25). Position the steering pump (25) on the pump drive (30) and install four bolts and washers (29).
    Show/hide table

    Illustration 15	g00691546

14. Install tube assembly (27) and hose assembly (28) on steering pump (25).
    Show/hide table

    Illustration 16	g00691544

15. Install tube assembly (24) and hose assembly (26) on the bottom of steering pump (25). Connect the end of tube assembly (23) to the center housing. Install tube assembly (19) and connect to steering pump (25).
    Show/hide table

    Illustration 17	g00691540

16. Install steering and hydraulic oil filter assemblies (20) and attach with eight bolts and washers (22).
    Show/hide table

    Illustration 18	g00691537

17. Install transmission oil filter assembly and attach with two bolts and washers (21).
    Show/hide table

    Illustration 19	g00691525

18. Install three tube assemblies (19) on steering and hydraulic oil filter assemblies (20).
    Show/hide table

    Illustration 20	g00691523

19. Position cable assemblies (16) and install two brackets (17). Connect two electrical connectors (18).
    Show/hide table

    Illustration 21	g00691519

20. Position brackets (14) that are attached to cable assemblies (16) in place and install four bolts and washers (15).
    Show/hide table

    Illustration 22	g00691504

21. Connect electrical connectors (11). Connect tube assembly (13) to transmission oil filter assembly (12) and connect both ends of tube assembly (10).
    Show/hide table

    Illustration 23	g00691499

22. Connect sixteen electrical connectors (9).
    Show/hide table

    Illustration 24	g00691497

23. Connect brake tube assembly (7) to tee fitting (6) and install bolt (8).
    Show/hide table

    Illustration 25	g00691485

24. Place tube assemblies (4) in position and install four clamps (5).
    Show/hide table

    Illustration 26	g00691472

    Show/hide table

    Illustration 27	g00691469

25. Connect tube assemblies (4) to the electronic control valve for the transmission (3) and to the rear of the machine.

    Note: Refer to the Operation and Maintenance Manual, "Lubricant Viscosities and Refill Capacities" for the proper filling procedure and the proper levels for the hydraulic system.

End By:

1. Connect the engine frame and the transmission. Refer to Disassembly and Assembly, "Engine Frame and Transmission - Connect".

2. Install the cab. Refer to the Disassembly and Assembly Manual for Machine Systems, "Cab - Install".