986H Wheel Loader Final Drive, Brake, Wheel, and Spindle - Remove and Install Caterpillar


Final Drive, Brake, Wheel, and Spindle - Remove and Install
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1.1. Specifications
2.1. Removal Procedure
3.1. Installation Procedure

Specifications



Illustration 1g03404800

Table 1
Specification for 396-2249 Fixed Axle Gp 
Item  Qty  Part  Specification Description 
50  173-9684 Bolt  Torque to 1000 ± 125 N·m (738 ± 92 lb ft)
164-4180 Plug As  Torque to 210 ± 20 N·m (155 ± 15 lb ft)
165-4929 Plug As  Torque to 210 to 231 N·m (155 to 170 lb ft)


Illustration 2g03404954

Table 2
Specification for 376-3156 Fixed Axle Gp 
Item  Qty  Part  Specification Description 
6V-8132 Bolt  Torque to 1000 ± 125 N·m (738 ± 92 lb ft)
9S-4205 Plug  Torque to 210 ± 21 N·m (155 ± 15 lb ft)
165-4929 Plug As  Torque to 210 ± 21 N·m (155 ± 15 lb ft)


Illustration 3g03405198

Table 3
Specification for 396-2247 Oscillating Axle Gp 
Item  Qty  Part  Specification Description 
1K-6853 Grease Fitting  Apply white Loctite Low Breakloose PST to the threads. 
6M-1622 Dowel  Protrusion (D) is 55.7 ± 1.5 mm (2.19 ± 0.06 inch)
164-4180 Plug As  Torque to 210 ± 20 N·m (155 ± 15 lb ft)
50  173-9684 Bolt  Torque to 1000 ± 125 N·m (738 ± 92 lb ft)
54  160-8510 Self-Locking Bolt  Torque to 210 ± 40 N·m (155 ± 30 lb ft).
Turn an additional angle of 120 ± 10 degrees. 
6M-1592 Bushing  Bore before assembly is 12.039 ± 0.006 mm (0.4740 ± 0.0002 inch).
Before assembly, apply black 5P-0960 Grease Cartridge to the surfaces. 
165-4929 Plug As  Torque to 210 ± 20 N·m (155 ± 15 lb ft)
Before assembly, apply 8C-8422 Sealant to the mating surfaces. 


Illustration 4g03405223

Table 4
Specification for 376-3771 Oscillating Axle Gp 
Item  Qty  Part  Specification Description 
1K-6853 Grease Fitting  Torque to 16 ± 5 N·m (142 ± 44 lb in)
5V-7107 Dowel  Protrusion (D) is 53.0 ± 1.5 mm (2.09 ± 0.06 inch)
9S-4181 O-Ring Plug  Torque to 210 to 230 N·m (155 to 170 lb ft)
9S-8005 O-Ring Plug  Torque to 82 to 90 N·m (60 to 66 lb ft)
149-8220 Pressure Relief Fitting  Torque to 16 N·m (142 lb in)
6M-1622 Dowel  Protrusion (E) is 55.6 ± 1.5 mm (2.19 ± 0.06 inch)
40  8T-0666 Bolt  Torque to 1000 ± 125 N·m (738 ± 92 lb ft)
6V-8132 Bolt  Torque to 1000 ± 125 N·m (738 ± 92 lb ft)
Apply purple Loctite Hi-Temp Flang Sealant to the mating surfaces. 
10  50  6V-3532 Bolt  Torque to 520 ± 70 N·m (384 ± 52 lb ft)
11  165-4929 Plug As  Torque to 210 to 230 N·m (155 to 170 lb ft)
12  6M-1592 Bushing  Bore before assembly is 12.039 ± 0.006 mm (0.4740 ± 0.0002 inch).
Before assembly, apply black 5P-0960 Grease Cartridge to the surfaces. 

Removal Procedure

Table 5
Required Tools 
Tool  Part Number  Part Description  Qty 
4C-6486  Stand 
8S-7615 Pin 
8S-8048 Saddle 
8S-7611 Tube 
439-3940  Bracket As 

Start By:

  1. Remove the tires and rims.

  2. Remove the axle shaft.


NOTICE

Care must be taken to ensure that fluids are contained during performance of inspection, maintenance, testing, adjusting, and repair of the product. Be prepared to collect the fluid with suitable containers before opening any compartment or disassembling any component containing fluids.

Refer to Special Publication, NENG2500, "Dealer Service Tool Catalog" for tools and supplies suitable to collect and contain fluids on Cat products.

Dispose of all fluids according to local regulations and mandates.


    Note: The removal procedures for the front and rear final drive, the brake, the wheel, and the spindle are identical. The final drive, the brake, the wheel, and the spindle can be removed while the axle assemblies are still on the machine. The axles have been removed for the following removal and installation procedures.



    Illustration 5g00684975


    Illustration 6g00686635

  1. If the axle assembly has been removed from the machine, place the axle assembly on Tooling (A). Place suitable cribbing under the final drive that is not being removed, as shown.


    Illustration 7g00686636


    Illustration 8g00686637

  2. Install Tooling (B) to the final drive, the brake, the wheel, and spindle (1).

  3. Attach a suitable lifting device to Tooling (B). The weight of the final drive, the brake, the wheel, and spindle (1) is approximately 770 kg (1700 lb).

  4. Remove bolts (2).


    Illustration 9g00686638

  5. Remove the final drive, the brake, the wheel, and spindle (1).


    Illustration 10g00686639

  6. Remove O-ring seal (3).


    Illustration 11g00686641

  7. Remove bolts (4) that secure brake piston assembly (5).


    Illustration 12g00686642

  8. Remove brake piston assembly (5).

  9. Remove O-ring seal (6) from brake piston assembly (5).

  10. Remove O-ring seal (7) from the brake port.

Installation Procedure

  1. Install final drive, the brake, the wheel, and spindle (1) in the reverse order of removal.

    1. Tighten bolts (2) to a torque of 1000 ± 125 N·m (738 ± 92 lb ft).

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