TM-9-2350-247-20-1 Unit Maintenance Manual Volume 1 M548A1 M548A3 Tracked Cargo Carrier Download
Page 471 of 870
TM 9-2350-247-20-1 TOWED LOAD BRAKES DO NOT OPERATE WHEN PEDAL IS PRESSED; AIR PRESSURE ADEQUATE (M548A1) 0099 00 INITIAL SETUP: M a i n t e n a n c e L e v e l Unit T o o l s a n d S p e c i a l T o o l s General Mechanic’s Tool Kit (WP 0541 00, Item 57) P e r s o n n e l R e q u i r e d Unit Mechanic R e f e r e n c e s See your -10 E q u i p m e n t C o n d i t i o n Engine stopped (see your -10) Carrier blocked (see your -10) T 1. Start engine (see your -10). 2. Check for faulty treadle valve (1). 3. While observing air indicator gauge, press brake pedal and release. Pressure should momentarily drop and stabilize. Air will also audibly exhaust from treadle valve (1) as air brake pedal is released. If no needle movement is noted, treadle valve is faulty. 4. Did treadle valve (1) cause needle movement? YES NO TN 1. Stop engine (see your -10). 2. Notify your supervisor. Y 1. Check air lines, tubings, fittings, and coupler to towed load for air leaks. 2. Is brake system free of air leaks? YES NO YN 1. Stop engine (see your -10). 2. Replace faulty parts (WP 0495 00). 3. Verify no faults found. 0099 00-1