TM-9-2320-361-24-1 Field Maintenance Manual Volume 1 for M44A2 Series Trucks
Page 170 of 1176
TM 9-2320-361-24-1 0010 00 0010 00-10 COMPRESSED AIR AND BRAKE SYSTEM TROUBLESHOOTING (Contd) Table 2. Service Brakes Troubleshooting Procedures (Contd). MALFUNCTION TEST OR INSPECTION CORRECTIVE ACTION 4. BRAKES DRAG 1. Check brake pedal (1) for free travel. Free travel should be 0.25–0.5 in. (6.35–12.7 mm). 2. Check hydraulic brake lines (2) for bends, kinks, or restrictions. 3. Check service brakeshoes for proper adjustments (WP 0168 00). 4. Check service brake hydraulic fluid for contamination. 5. Perform master cylinder (3) internal leakage test (WP 0170 00). Adjust brake pedal (1) free travel (WP 0174 00). If hydraulic brake lines (2) are bent, kinked, or restricted, replace (WP 0175 00). If brakeshoes are not properly adjusted, adjust (WP 0168 00). If fluid is contaminated, flush entire brake system (WP 0172 00). 1. If master cylinder (3) is leaking internally, replace (WP 0170 00). 2. If master cylinder (3) is good and malfunction still exists, replace air-hydraulic cylinder (4) (WP 0171 00). 3 2 1 4