793F Off-Highway Truck Field Assembly Caterpillar

Parts and Specification Information

Illustration 1	g03342163

Note: Verify that all parts are shipped and undamaged for preparation of assembly. Missing or damaged parts can be ordered prior to assembly to avoid delays during assembly.

Installation Procedure

Show/hide table

Illustration 2	g03146912
(11) 8T-4137 Bolts (M10X1.5X20-MM) (12) 8T-4121 Hard Washers (13) 340-7068 Plate As

1. Remove ten bolts (11), ten hard washers (12), and one plate assembly (13). Retain all hardware.
   Show/hide table

   Illustration 3	g03146915
   (14) 8T-4137 Bolts (M10X1.5X20-MM) (15) 8T-4121 Hard Washers (16) 340-7065 Plate (17) 340-7054 Plate As

2. Remove 11 bolts (14), 11 hard washers (15), one plate (16), and one plate assembly (17). Retain all hardware.
   Show/hide table

   Illustration 4	g03146916
   (18) 279-2540 Yoke As

3. Clean the mating surface of yoke assembly (18) free of wax, dirt, debris, paint, and grease.
   Show/hide table

   Illustration 5	g03146936
   (1) 303-2504 Slip Joint

   Note: Do not separate the drive shaft. Drive shafts are assembled with the u-joints in phase for balancing purposes. If the drive shaft must be separated, use a paint pen to make aligning marks on both sides of the slip joint. When re-assembling the drive shaft, make sure the aligning marks match to ensure proper u-joint phasing and balance performance.

4. Clean the mating surfaces of slip joint (1) free of wax, dirt, debris, paint, and grease. Repeat for the opposite side.
   Show/hide table

   Illustration 6	g03151261
   (1) 303-2504 Slip Joint

   Show/hide table

   Illustration 7	g03151801
   (1) 303-2504 Slip Joint (2) 156-7993 Bolts (M22X1.5X105-MM)

   Show/hide table

   Illustration 8	g03151802
   (1) 303-2504 Slip Joint (B) Suitable Cribbing ( 203 mm (8 inch) Length X 102 mm (4 inch) Width X 102 mm (4 inch) Height)

   Note: Install slip joint prior to installation of the rear axle for optimal access.

5. Attach a suitable lifting device to slip joint (1). The weight of slip joint (1) is approximately 240 kg (530 lb). Position slip joint (1) into the tunnel of the drive shaft guards. Lower slip joint (1) onto the tunnel of the drive shaft guards.

6. Attach two suitable lifting devices to position slip joint (1).

7. Install slip joint (1) to the torque converter with four bolts (2).

   Note: Install four bolts (2) to secure slip joint (1). The four bolts (2) will be torqued at a later time.

8. Lower slip joint (1) onto Tooling (B). Remove the suitable lifting devices.
   Show/hide table

   Illustration 9	g03163856
   (1) 303-2504 Slip Joint

9. Cut the strap that secures slip joint (1) from extending.
   Show/hide table

   Illustration 10	g03163857
   (3) 281-3338 Link Gp (A) Loctite C5A Copper Anti-Seize

10. Clean the bearing bores of lower link groups (3) free of wax, dirt, debris, paint, and grease. Apply Tooling (A) to the bearing bores of lower link group (3). Repeat for the remaining lower link groups.
    Show/hide table

    Illustration 11	g03163858
    (4) 505-6560 Pin

11. Clean the surface of pin (4) free of wax, dirt, debris, paint, and grease. Repeat for the remaining pins.
    Show/hide table

    Illustration 12	g03163876
    (A) Loctite C5A Copper Anti-Seize (D) 8T-3087 Hand Tap (M10X1.5)

12. Remove the protective covers from the pin bores. Clean the pin bores free of wax, dirt, debris, paint, and grease. Use Tooling (D) to clean the threads of the two threaded holes. Apply Tooling (A) to the pin bores. Repeat for the remaining lower link groups. Repeat for the remaining pin bores.
    Show/hide table

    Illustration 13	g03177970
    (4) 505-6560 Pin

    Show/hide table

    Illustration 14	g06050008
    Typical Example 8 places

13. Attach a suitable lifting device to pin (4). The weight of pin (4) is approximately 50 kg (110 lb). Install pin (4) so the grease fitting is facing towards the center of the machine. Install pin (4) in the outer bore of the chassis. Repeat for the remaining three pins.

    Note: Leaving the pins partially in place avoids lifting the pins into place separately.

    Note: Ensure pins (4) are oriented with the grease ports upward.

    Show/hide table

    Illustration 15	g06360080
    (3) 281-3338 Link Gp (4) 505-6560 Pin (5) 505-6561 Plate (6) 514-0293 Plate (7) 198-4780 Hard Washers (8) 8T-7338 Bolts (8A) 8T-4193 Bolt

    Show/hide table

    Illustration 16	g03177974
    (3) 281-3338 Link Gp (C) 386-6031 Lever Puller Hoist Gp

14. Attach a suitable lifting device to lower link group (3). The weight of lower link group is approximately 308 kg (680 lb). Position lower link group (3) and install pin (4). Install one plate (5), one plate (6), four hard washers (7), and four bolts (8). Use Tooling (C) and a suitable lifting device to support lower link group (3). Repeat for the other side.
    Show/hide table

    Illustration 17	g03177984
    (3) 281-3338 Link Gp (4) 505-6560 Pin (5) 505-6561 Plate (6) 514-0293 Plate (7) 198-4780 Hard Washers (8) 8T-7338 Bolts (8A) 8T-4193 Bolt

    Show/hide table

    Illustration 18	g03178056
    (3) 281-3338 Link Gp (C) 386-6031 Lever Puller Hoist Gp

15. Attach a suitable lifting device to lower link group (3). The weight of lower link group is approximately 308 kg (680 lb). Position lower link group (3) and install pin (4). Install one plate (5), one plate (6), four hard washers (7), and four bolts (8). Use Tooling (C) and a suitable lifting device to support lower link group (3). Repeat for the other side.
    Show/hide table

    Illustration 19	g03178058
    (4) 278-3446 Pin (9) 087-3533 Cap (E) Loctite 242

16. Apply Tooling (E) to the threads of cap (9). Install one cap (9) onto pin (4). Repeat for the three remaining pins.
    Show/hide table

    Illustration 20	g06360063
    (19) 8T-7338 Bolt (20) 198-4780 Hard Washer (21) 514-0293 Plate (22) 505-6560 Pin (23) 8T-4193 Bolt (24) 198-4780 Hard Washer (25) 505-6561 Plate

17. Remove two bolts (19), two hard washers (20), one plate (21), two bolts (23), two hard washers (24), and one plate (25). Reposition pin (22) in the outer bore of the rear axle. Repeat for the remaining pins. Retain all the hardware.

    Note: Ensure pins (22) are oriented with the grease ports upward.

    Show/hide table

    Illustration 21	g03333701
    (26) 321-9814 Plate (27) 8T-4223 Hard Washers (28) 8T-4139 Bolts (29) 7Y-5217 Bolts (30) 8T-3282 Hard Washers (31) 150-3981 Plate (32) 150-3772 Pin

18. Remove three bolts (28), three hard washers (27), and plate (26). Remove six bolts (29), six hard washers (30), and plate (31). Reposition pin (32) in the inner bore of the rear axle. Repeat for the remaining pin. Retain all the hardware.
    Show/hide table

    Illustration 22	g03334069
    (33) 221-3417 Pressure Sensor Gp

19. Disconnect pressure sensor group (33). Repeat for the other side.
    Show/hide table

    Illustration 23	g03334070
    (34) 297-5609 Rear Suspension Gp

    Show/hide table

    Illustration 24	g03334071
    (34) 297-5609 Rear Suspension Gp

20. Attach a suitable lifting device to rear suspension group (34). The weight of rear suspension group (34) is approximately 480 kg (1060 lb). Raise rear suspension group (34). Secure rear suspension group (34) to the chassis in a horizontal position with a suitable lifting device. Repeat for the other side.
    Show/hide table

    Illustration 25	g03342208
    (10) 473-1370 Power Train Ar or 387-8523 Power Train Ar

21. Attach a suitable lifting device to power train arrangement (10). The weight of power train arrangement (10) is approximately 25760 kg (56800 lb). Position power train arrangement (10).

    Note: Support the rear axle with suitable cribbing before removing any lifting device.

    Show/hide table

    Illustration 26	g03334073
    (3) 281-3338 Lower Link Gp (10) 278-8433 Power Train Ar or 387-8523 Power Train Ar (19) 8T-7338 Bolt (20) 198-4780 Hard Washer (21) 514-0293 Plate (22) 505-6560 Pin (23) 8T-4193 Bolt (24) 198-4780 Hard Washer (25) 505-6561 Plate (C) 386-6031 Lever Puller Hoist Gp

22. Use Tooling (C) to align the bores of power train arrangement (10) and lower link group (3) Install one pin (22), one plate (25), two hard washers (24), two bolts (23), one plate (21), two hard washers (20), and two bolts (19). Repeat for the remaining lower link groups.

23. Remove Tooling (C).
    Show/hide table

    Illustration 27	g03334070
    (34) 297-5609 Rear Suspension Gp

    Show/hide table

    Illustration 28	g03334074
    (29) 7Y-5217 Bolts (30) 8T-3282 Hard Washers (31) 150-3981 Plate (32) 150-3772 Pin (34) 297-5609 Rear Suspension Gp

    Show/hide table

    Illustration 29	g06049986
    Typical Example 2 places

    Note: Install the grease fittings prior to pinning the cylinder.

24. Attach a suitable lifting device to rear suspension group (34). The weight of rear suspension group (34) is approximately 480 kg (1060 lb). Lower rear suspension group (34). Align the bores of rear suspension group (34) and the power train arrangement. Install pin (32), one plate (31), six hard washers (30), and six bolts (29). Repeat for the other side.

    Note: Ensure pins (32) are oriented with the grease ports towards the axle housing.

25. Lower power train arrangement (10) onto suitable cribbing. Remove the suitable lifting device from the power train arrangement (10).
    Show/hide table

    Illustration 30	g03334078
    (33) 221-3417 Pressure Sensor Gp

26. Connect pressure sensor group (33). Repeat for the other side.
    Show/hide table

    Illustration 31	g03333676
    (1) 303-2504 Slip Joint (2) 156-7993 Bolts (M22X1.5X105-MM)

    Note: Use a suitable rubber or wood hammer to seat the u-joints in the yoke of the transmission and the yoke of the torque converter. Ensure the u-joints are fully seated prior to tighten bolts (2) to the final torque.

27. Install slip joint (1) to the transmission with four bolts (2). Tighten eight bolts (2) in a cross pattern to a torque of 775 ± 40 N·m (572 ± 30 lb ft).
    Show/hide table

    Illustration 32	g03333674
    (14) 8T-4137 Bolts (15) 8T-4121 Hard Washers (16) 340-7065 Plate (17) 340-7054 Plate As

28. Install 11 bolts (14), 11 hard washers (15), one plate (16), and one plate assembly (17).
    Show/hide table

    Illustration 33	g03333675
    (11) 8T-4137 Bolts (12) 8T-4121 Hard Washers (13) 340-7068 Plate As

29. Install ten bolts (11), ten hard washers (12), and one plate assembly (13).