TM 9-2320-361-20 8-3. PARKING BRAKESHOE MAINTENANCE (Contd) b. Disassemble 1. Remove two clips (1), spring (6) and two washers (2) and (3) from pins (4) and (5). Discard clips (1). 2. Remove two clips (7) from pins (8) and (11). Discard clips (7). 3. Remove outer brakeshoe (9) from pin (8) and inner brakeshoe (10) from pin (11). 4. Remove nut (18), lockwasher (19), and cam pin (5) from outer shoe (9). Discard lockwasher (19). NOTE Perform step 5 only if lubrication fittings are damaged. 5. Remove three lubrication fittings (12) from outer shoe (9) and one lubrication fitting (12) and pin (4) from inner shoe (10). Discard pin (4). c. Cleaning and Inspection WARNING Drycleaning solvent is flammable and will not be used near open flame. Use only in well-ventilated places. Failure to do so may result in injury to personnel. 1. 2. 3. 4. 5. 6. 7. 8. 9. 8-6 Clean all parts with rag saturated with drycleaning solvent. Remove thick dirt and corrosion. Do not saturate brakeshoe lining or brakedrum with drycleaning solvent. Measure the thickness of brake linings (13) and (15) at most worn point. If thickness is 0.1875 in. (4.76 mm) or less, replace both brakeshoes (9) and (10). Inspect brakeshoes (9) and (10) for broken linings (13) and (15), loose or missing rivets, cracks, or stripped threads. Replace both brakeshoes (9) and (10) if linings (13) and (15) are broken, rivets are loose or missing, brakeshoes (9) and (10) are cracked, or threads are stripped. Inspect lever (14) for cracks, breaks, or loose pins (8) and (11). Replace if cracked, broken, or pins (8) or (11) are loose. Pins (8) and (11) must be perpendicular to lever (14). Clip grooves of pins (11) and (8) must be free of chips and burrs. Slot in cam pin (5) must have square slot. If slot is damaged, replace pin (5). Pin (4) must be tight in brakeshoe (11) and clip groove free of chips and burrs. Inspect springs (20) and (21) for broken or distorted coils. If coils or hook ends are distorted or broken, replace. Inspect jamnuts (17) and (18) for burred flats or stripped threads. Replace if flats are burred or threads are stripped. Inspect screw (16) for breaks, cracks, and crossed or stripped threads. Replace if broken, cracked, or threads are crossed or stripped.