BOLT-HEX 4929612 - Caterpillar

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Remove the cotter pin and clevis pin (6). Separate brake lever (7) from yoke assembly (8) .
Mark the position of brake lever (7) on camshaft (9) for installation purposes. Loosen bolt (10) and remove brake lever (7) from camshaft (9) .
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Typical Example
Remove brake return springs (12), brace (11), brake retainer spring (14), brake adjuster (15) and brake shoes (13) .
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Typical Example
Remove four bolts (16) and plate assembly (17) .
Remove the brake camshaft.
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Typical Example
Remove two nuts (18), the washers, and brake actuator mounting bracket (19) .Installation Procedure
Table 2
Required Tools    
Tool    Part Number    Part Description    Qty    
A     138-7575     Link Bracket     1    
B     1U-8221     Lifting Sling     1    
8S-9906 Ratchet Puller     1    Note: Clean all parts and inspect all parts. If any components are worn or damaged, use new parts for replacement.
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Typical Example
Install brake actuator mounting bracket (19), the washers, and two nuts (18) .
Install the brake camshaft.
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Typical Example
Install plate assembly (17) and four bolts (16). Tighten the bolts to a torque of 300 40 N m (220 30 lb ft).
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Typical Example
Install brake shoes (13), brake adjuster (15), brake retainer spring (14), brace (11) and brake return springs (12) .
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Install brake lever (7) and bolt to camshaft (9) .
Connect brake lever (7) to yoke assembly (8). Install clevis pin (6) and the cotter pin.
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Use Tooling (B) and a hoist to carefully install brake drum (4) to the splined end of drive shaft (5). The weight of the brake drum is 25 kg (55 lb).
Install eleven bolts (3) and the washers. Tighten the bolts to a torque of 105 20 N m (75 15 lb ft).
Remove Tooling (B) from Tooling (A) .
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Install the O-ring seal (not shown), bolt (2) and the washer. Tighten the bolt to a torque of 530 70 N m (390 50 lb ft).
Remove Tooling (A) (not shown) from bolt (1). Tighten bolt (1) to a torque of 105 20 N m (75 15 lb ft).End By: Remove the center drive shaft. Refer to Disassembly and Assembly, "Drive Shaft (Center) - Remove and Install" for the machine that is being serviced.