986H Wheel Loader Caterpillar

Parking Brake - Assemble

Usage:

986H 986

Specifications

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Illustration 1	g03395172

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Table 1
Specification for 380-3895 Parking Brake Gp
Item	Qty	Part	Specification Description
1	6	2A-1531 Bolt	Torque to 140 ± 14 N·m (103 ± 10 lb ft).
2	3	7K-9204 Lip Type Seal	Lubricate the piston lightly with lubricant that is being sealed.
3	3	171-1391 Seal	Lubricate the piston lightly with lubricant that is being sealed.
4	Thickness of four new friction discs and three new plates is 38.85 ± 0.56 mm (1.530 ± 0.022 inch).
	4	236-8675 Friction Disc	Thickness of one new friction disc is 4.95 ± 0.08 mm (0.195 ± 0.003 inch).
	3	184-3677 Reaction Plate	Thickness of one new reaction plate is 6.35 ± 0.08 mm (0.250 ± 0.003 inch).
5	1	177-1483 Lip Type Seal	Lubricate lightly with lubricant that is being sealed.
6	9	7S-3997 Spring	Length under test force is 69.34 mm (2.730 inch).
			Test force is 3892 ± 311 N (875 ± 70 lb).
			Free length after test is 82.75 mm (3.258 inch).

Assembly Procedure

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Table 2
Required Tools
Tool	Part Number	Part Description	Qty
A	1P-7405	Eyebolt	1
B	1P-0520	Driver Group	1

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Illustration 2	g02071033

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Illustration 3	g00510092

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Illustration 4	g02071093

Install bearing (16) in the bearing cage. Bearing (16) should make contact with the counterbore in the bearing cage. Install retaining ring (15) that holds bearing (16) in position.
Apply a light coat of the lubricant that is being sealed to lip seal (14). Use Tooling (B) in order to install lip seal (14) in the bearing cage. Install lip seal (14) until lip seal (14) makes contact with the counterbore in the bearing cage. The edge of lip seal (14) should be even with the surface of the brake.
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Illustration 5 g00510091
Install brake shaft (13) from the bottom of the bearing cage, as shown.
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Illustration 6 g00510087
Install hub (12), the O-ring seal, and retainer (11) over the brake shaft.
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Illustration 7 g00510060
Install brake disc assemblies (10) and plates (9) in alternating order. Start with a brake disc assembly (10) and end with a brake disc assembly (10).
Install pressure plate (8). Install springs (7).
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Illustration 8 g01026880

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Improper assembly of parts that are spring loaded can cause bodily injury.
To prevent possible injury, follow the established assembly procedure and wear protective equipment.
Position brake housing assembly (6). Install bolts (5) that hold brake housing assembly (6) in position on the pressure plate.
Apply the lubricant that is being sealed to piston (4), the O-ring seal, the backup ring, and the lip seal. Install the O-ring seal, the backup ring, and the lip seal in the bore of the brake housing assembly. Use Tooling (A) in order to install piston (4) in the bore of the brake housing assembly. Repeat for the remaining pistons.
Install spacers (3) on brake housing assembly (6).
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Illustration 9 g00510031

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Improper assembly of parts that are spring loaded can cause bodily injury.
To prevent possible injury, follow the established assembly procedure and wear protective equipment.
Install plate (2) and bolts (1) that hold the brake housing in position. Tighten bolts (1) to a torque of 140 ± 14 N·m (103 ± 10 lb ft).