TM 9-2330-379-14&PSERVICE BRAKE ASSEMBLY - CONTINUEDACTIONLOCATIONITEMREMARKSAUTOMATIC BRAKE ADJUSTMENTCAUTIONAutomatic adjusters cannot be depended upon totake up excessive initial clearance. Adjusters maynot function if adjusting bolts are tight against theplunger. Dual actuated brakes will not adjust on astationary vehicle.1Spring brakeCaging tool (2)Cage spring brake chamber (1) powerchamber (1)spring by installing manual release tool(2) and turning manual caging bolt 18 to 21turns clockwise.2ActuatorAdjusting boltCheck, clean, and regrease actuatorhousing (3)assembly (4),housing (3), adjusting bolt assembly (4),adjusting sleeveadjusting sleeve (5), and adjusting(5), and adjust-plunger (6).ing plunger (6)3Spring brakeBrake shoes (7)Manually adjust brakes for heavy dragchamber (1)using a brake shoe adjust tool to move theadjusting bolt on adjusting bolt assembly(4). The adjusting bolts have right handthreads.4Adjusting bolta.Back off adjusters 0.020" to 0.040"assembly (4)clearance.b.Measure at the crown (center) of thebrake shoe using a long feeler gaugeto permit checking the entirelining width. A light drum dragshould be evident.c.If a light drum drag is not evident,check for misalignment or bent shoes,improper lining grind, drum runout,etc.4-119
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