Manual References
TM 9-2320-280-10
TM 9-2320-280-24P
Equipment Condition
Brake protection guards removed (para. 7-8.1)
(M998A2 vehicle only).
General Safety Instructions
Make sure brake pads are installed with linings
facing rotor.
TM 9-2320-280-20-2
7-26
Change 2
7-12. SERVICE BRAKE CALIPER MAINTENANCE
This task covers:
a. Removal
c. Installation
b. Cleaning and Inspection
INITIAL SETUP:
Tools
General mechanic’s tool kit:
automotive (Appendix B, Item 1)
“C” clamp (Appendix B, Item 164)
Special Tools
Hex-head driver, 7-mm (Appendix B, Item 162)
Crowfoot, 14-mm (Appendix B, Item 152)
Materials/Parts
Copper washer (Appendix G, Item 15)
Grease (Appendix C, Item 22)
Sealing compound (Appendix C, Item 45)
a. Removal
CAUTION
Cover or plug all open lines and connections immediately after
disconnection to prevent contamination. Remove all plugs prior to
connection.
1.
Disconnect brake line (1) from coupling (10).
2.
Remove coupling (10) and washer (11) from caliper (9).
3.
Using crowfoot, remove two capscrews (7), washers (6), yoke (5), and caliper (9) from adapter (4).
NOTE
Note positioning of brake pad surfaces for installation.
4.
Remove two brake pads (2) from adapter (4).
5.
Slide yoke (5) and locating pins (8) out from caliper (9).
NOTE
• The following procedure applies to the front brake system on all
vehicles and to the rear brake system on vehicles with serial
numbers USBL Eff. 1 through 44824.
• For replacement of rear dual service/parking brake pad on vehicles
with serial numbers USBL Eff. 44825 and above, refer to para. 7-22.
b. Cleaning and Inspection
1.
Clean mating surfaces of caliper (9) and adapter (4) and lubricate with grease.
2.
Clean cooling fins of rotor (3).
3.
Inspect caliper (9) and caliper piston (12) for cracks, pitting, or damage. Replace caliper (9) if
cracked, pitted, or damaged.
4.
Inspect locating pin bearings and bushings (14) for tears or deterioration. Replace bearings and
bushings (14) if torn or deteriorated.
5.
Inspect dust boot (13) for tears or deterioration. Replace caliper (9) if dust boot (13) is torn or
deteriorated.
6.
Inspect yoke locating pins (8) for cracks or corrosion. Perform step 7 if pins (8) are cracked or
corroded.
7.
Using 7-mm hex-head driver, remove locating pins (8) from yoke (5). Discard locating pins (8).
