TM 9-2320-280-20-2
7-3. PARKING BRAKE CALlPER AND ROTOR MAINTENANCE (Cont’d)
8. Remove slotted nut (1), washer (2), and cam (3) from caliper (50.
9. Remove plate and guide pin assembly (4) from caliper (5).
10. Remove two push pins (12) and two lip seals (6) from caliper (5). Discard lip seals (6).
11. Remove spring (7) and rear brake pad (8) from caliper half (14).
12. Remove two springs (10), front brake pad (9), and two lip seals (11) from caliper half (13). Discard lip
seals (11).
13. If caliper (5) requires disassembly, remove two long capscrews (17), washers (18), short
capscrew (16), and washer (15). Separate caliper halves (13) and (14).
b. Inspection
1. Inspect caliper halves (13) and (14) for cracks, wear, elongated holes, and bends. Replace as
necessary.
2. Inspect rotor (19) for cracks, wear, elongated holes, and warping. Replace if defective, or rotor
thickness is less than 5/32 in. (4 mm).
3. Inspect brake pads (9) and (8) for wear. If brake pad thickness is less than 1/8 in. (3.2 mm), replace
both pads (9) and (8). Replace both pads (9) and (8) if rotor (19) was replaced.
c. Installation
1.
2.
3.
4.
5.
6.
7.
8.
7-6
If caliper halves (13) and (14) require assembly, apply sealing compound to threads of capscrews (17)
and (16). Install caliper halves (13) and (14) with washer (15), short capscrew (16), two washers (18),
and two long capscrews (17). Tighten capscrews (17) and (16) in sequence shown, to 30-35 lb-ft
(41-47 N.m).
Install two lip seals (11) and front brake pad (9) on caliper (5) with two springs (10).
Install long spring (7) on rear brake pad (8).
Install rear brake pad (8) on caliper (5) with spring (7).
Clean and lubricate push pins (12), cam-to-push pin contact area, and push pin openings in
caliper (5) with grease.
Install two lip seals (6) and push pins (12) in caliper (5) with rounded ends of push pins (12) facing
outward.
Install plate and guide pin assembly (4) on caliper (5).
Install cam (3) on caliper (5) with washer (2) and slotted nut (1). Do not tighten slotted nut (1).
