TM-9-2320-387-24 HMMWV Direct Support & General Support Maintenance Manual Volume 1 Download
Page 1021 of 1205
7-14. REAR DUAL SERVICE/PARKING BRAKE PAD MAINTENANCE (Cont'd) TM 9-2320-387-24-1 7-40 Change 1 b. Cleaning and Inspection c. Installation NOTE Apply a light coat of grease on adapter slides. 1. Clean mating surfaces of caliper (1) and adapter (7) and lubricate adapter slides with grease. 2. Inspect caliper (1) and caliper piston (3) for cracks, pitting, or damage. Replace caliper assembly if cracked, pitted, or damaged (para. 7-15). 3. Inspect dust boot (4) for tears or deterioration. Replace caliper (1) if dust boot (4) is torn or deteriorated (para. 7-15). 4. Inspect caliper cable bracket (2) for looseness, damage, and rotation. If loose, damaged, or repositioned, replace caliper (1) (para. 7-15). 5. Thoroughly clean and inspect rotor (6) for heat cracks, discoloration, pitting, or scoring. Replace rotor (6) if cracked, pitted, or scored (para. 7-12). CAUTION Ensure grease and oil are not in contact with rotor and/or shoe and lining friction surface. Failure to do so will result in damage to equipment and poor performance. NOTE • Replace brake pads in sets on both sides of differential. • Replace brake pads if thickness is less than 1/8 in. (3.2 mm) and operation in wet and muddy conditions is expected. 6. Inspect brake pads (5) for glazing, oil saturation, or wear. If glazed, oil saturated, or if brake pad thickness is less than 1/8 in. (3.2 mm), replace both pads (5) and pads on opposite caliper. WARNING Ensure brake pads are installed with linings facing rotor. Failure to do this may cause injury to personnel or damage to equipment. 1. Position two brake pads (5) facing rotor (6) in adapter (7). 2. Apply sealing compound to tapped holes of adapter (7). CAUTION Applying force to piston cap will result in piston cap damage. 3. Rotate caliper piston (3) in a clockwise direction and at the same time apply force on outer piston hex until caliper piston (3) is seated in piston bore. 4. Install caliper (1) and yoke (10) on adapter (7) and rotor (6) with clamp (9.1), two washers (9), and capscrews (8). Using crowfoot, tighten capscrews (8) to 30-40 lb-ft (41-54 N • m). 5. Install parking brake cable (18) on caliper cable bracket (11) with clip (12). CAUTION • Ensure lever is in contact with caliper cable bracket stop. Damage to equipment and poor performance will result if not aligned properly. • Ensure clevis and clevis pin are aligned to lever. Do not move lever to accommodate a misadjusted clevis. Damage to equipment and poor performance will result. 6. Check position of lever (13) and ensure it is in contact with caliper cable stop bracket (19). Install parking brake clevis (16) on lever (13) with clevis pin (17), washer (15), and cotter pin (14).