TM-9-2320-361-20

2-1/2-TON, 6x6, M44A2 SERIES TRUCKS (MULTIFUEL)

TECHNICAL MANUAL; UNIT MAINTENANCE

OCTOBER 1991

TM-9-2320-361-20 - Page 146 of 1207

TM 9-2320-361-20

Table 2-3. Compressed Air and Brake System Troubleshooting (Contd).

MALFUNCTION

TEST OR INSPECTION

CORRECTIVE ACTION

6. BRAKES DRAG

Step 1. Check brake pedal (6) free travel. Free travel should be 0.25-0.5 in. (6.35-12.7 mm).

Adjust brake pedal (6) free travel (para. 8-14).

Step 2. Check hydraulic brake lines (2) for bends, kinks, or restrictions.

Replace if hydraulic brake lines (2) are bent, kinked, or restricted. Refer to TM 9-243 for

instructions to double flare hydraulic brake lines (2).

Step 3. Check service brakeshoes (1) adjustment (para. 8-8).

Step 4. Check service brake hydraulic fluid for contamination.

If fluid is contaminated, flush entire brake system (para. 8-12).

Step 5. Perform master cylinder (7) internal leakage test (para. 8-10).

a. If master cylinder (7) is leaking internally, replace (para. 8-10).

b. If master cylinder (7) is good, and malfunction still exists, replace air-hydraulic cylin-

der (8) (para. 8-11).

END OF TESTING!

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