986H Wheel Loader Final Drive, Brake, Wheel, and Spindle

Final Drive, Brake, Wheel, and Spindle - Remove and Install

986H Wheel Loader [UENR0367]

986H Wheel Loader Fixed Axle (Front) - Remove and Install

986H Wheel Loader Service Brake - Remove and Install

BRAKING SYSTEM

BRAKE GP

986H Wheel Loader Parking Brake - Remove and Install

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

986H Wheel Loader Service Brake - Remove and Install

1.1. Specifications

2.1. Removal Procedure

3.1. Installation Procedure

Specifications

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Illustration 1	g03404800

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Table 1
Specification for 396-2249 Fixed Axle Gp
Item	Qty	Part	Specification Description
1	50	173-9684 Bolt	Torque to 1000 ± 125 N·m (738 ± 92 lb ft).
2	2	164-4180 Plug As	Torque to 210 ± 20 N·m (155 ± 15 lb ft).
3	1	165-4929 Plug As	Torque to 210 to 231 N·m (155 to 170 lb ft).

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Illustration 2	g03404954

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Table 2
Specification for 376-3156 Fixed Axle Gp
Item	Qty	Part	Specification Description
1	8	6V-8132 Bolt	Torque to 1000 ± 125 N·m (738 ± 92 lb ft).
2	1	9S-4205 Plug	Torque to 210 ± 21 N·m (155 ± 15 lb ft).
3	1	165-4929 Plug As	Torque to 210 ± 21 N·m (155 ± 15 lb ft).

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Illustration 3	g03405198

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Table 3
Specification for 396-2247 Oscillating Axle Gp
Item	Qty	Part	Specification Description
1	2	1K-6853 Grease Fitting	Apply white Loctite Low Breakloose PST to the threads.
2	4	6M-1622 Dowel	Protrusion (D) is 55.7 ± 1.5 mm (2.19 ± 0.06 inch).
3	2	164-4180 Plug As	Torque to 210 ± 20 N·m (155 ± 15 lb ft).
4	50	173-9684 Bolt	Torque to 1000 ± 125 N·m (738 ± 92 lb ft).
5	54	160-8510 Self-Locking Bolt	Torque to 210 ± 40 N·m (155 ± 30 lb ft). Turn an additional angle of 120 ± 10 degrees.
6	2	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.
7	1	165-4929 Plug As	Torque to 210 ± 20 N·m (155 ± 15 lb ft).
8	-	-	Before assembly, apply 8C-8422 Sealant to the mating surfaces.

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Illustration 4	g03405223

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Table 4
Specification for 376-3771 Oscillating Axle Gp
Item	Qty	Part	Specification Description
1	3	1K-6853 Grease Fitting	Torque to 16 ± 5 N·m (142 ± 44 lb in).
2	2	5V-7107 Dowel	Protrusion (D) is 53.0 ± 1.5 mm (2.09 ± 0.06 inch).
3	2	9S-4181 O-Ring Plug	Torque to 210 to 230 N·m (155 to 170 lb ft).
4	2	9S-8005 O-Ring Plug	Torque to 82 to 90 N·m (60 to 66 lb ft).
5	1	149-8220 Pressure Relief Fitting	Torque to 16 N·m (142 lb in).
6	2	6M-1622 Dowel	Protrusion (E) is 55.6 ± 1.5 mm (2.19 ± 0.06 inch).
7	40	8T-0666 Bolt	Torque to 1000 ± 125 N·m (738 ± 92 lb ft).
8	8	6V-8132 Bolt	Torque to 1000 ± 125 N·m (738 ± 92 lb ft).
9	-	-	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	1	165-4929 Plug As	Torque to 210 to 230 N·m (155 to 170 lb ft).
12	2	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

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Table 5
Required Tools
Tool	Part Number	Part Description	Qty
A	4C-6486	Stand	2
	8S-7615	Pin	2
	8S-8048	Saddle	2
	8S-7611	Tube	2
B	439-3940	Bracket As	2

Start By:

Remove the tires and rims.
Remove the axle shaft.

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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.

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Illustration 5	g00684975

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Illustration 6	g00686635

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.
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Illustration 7 g00686636

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Illustration 8 g00686637
Install Tooling (B) to the final drive, the brake, the wheel, and spindle (1).
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).
Remove bolts (2).
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Illustration 9 g00686638
Remove the final drive, the brake, the wheel, and spindle (1).
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Illustration 10 g00686639
Remove O-ring seal (3).
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Illustration 11 g00686641
Remove bolts (4) that secure brake piston assembly (5).
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Illustration 12 g00686642
Remove brake piston assembly (5).
Remove O-ring seal (6) from brake piston assembly (5).
Remove O-ring seal (7) from the brake port.

Installation Procedure

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).