TM 9-2330-267-14&P4-32. SERVICE BRAKE MAINTENANCE (Con’t).NOTEPerform step 7 only if backing plate needs to be replaced.7.Remove twelve screws (10), Iockwashers (7), nuts (6), cable ramp (9), and backing plate (8) from axleassembly. Discard Iockwashers.b.CLEANING AND INSPECTIONWARNINGlDry cleaning solvent P-D-680 is toxic and flammable. Always wear protectivegoggles and gloves, and use only in a well-ventilated area. Avoid contact with skin,eyes, and clothes, and DO NOT breathe vapors. DO NOT use near open flame orexcessive heat. The solvent’s flash point is 100°F-138°F (38°C-59°C). If youbecome dizzy while using cleaning solvent, immediately get fresh air and medicalhelp. If solvent contacts eyes, immediately wash your eyes and get medical aid.lDO NOT handle brakeshoes, brakedrums, or other brake components unless areahas been properly cleaned. There maybe asbestos dust on these components whichcan be dangerous if you touch It or breathe it. Wear an approved filter mask andgloves. Never use compressed air or a dry brush to clean brake components. Dustmay be removed using an industrial-type vacuum cleaner. Clean dust or mud awayfrom brake components with water and a wet, ft brush or cloth. Failure to followthis warning may result In serious illness or death to personnel.1.Clean all parts with dry cleaning solvent.2.Inspect all parts for damage. Replace any damaged parts.3.Inspect brakeshoe surfaces for cracks, distortion, and excessive wear. Brakeshoe linings should have aminimum thickness of ~ in. (3.2 mm). Replace brakeshoes if cracked or if lining thickness is less than ~ in.(3.2 mm).c . A S S E M B LYNOTEPerform step 1 only if backing plate was removed.1.Install twelve screws (10), nuts (6), new Iockwashers (7), cable ramp (9), and new backing plate (8) on axleassembly,2.Install four service brake pins (11) on two brakeshoes (1) with four washers (2) and nuts (3).3.Install screw (5), spacer (4), flatwasher (22), new Iockwasher (21), and nut (20) on left brakeshoe (1).4.Install capscrew (19), new Iockwasher (17), and flatwasher (16) on right brakeshoe (1).5.Install connecting link (23), tension spring washer (24), flatwasher (25), and slotted washer (26), on servicebrake pin (11).6.Install lever (12), tension spring washer (13), flatwasher (14), and slotted washer (15) on service brake pin (11).7.Install top and bottom brakeshoe return springs (18).
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