TM 9-2320-289-20Table 2-3. Mechanical TroubleshootingMALFUNCTIONTEST OR INSPECTIONCORRECTIVE ACTIONBRAKE SYSTEM1.BRAKES DRAGStep 1.Inspect brake lines and hoses. (See TB 9-2300-405-14)Clear restrictions or replace if damaged or crimped. (See paragraphs 7-9and 7-10)Step 2.Check for incorrect parking brake adjustment on rear brakes.Adjust parking brake. (See paragraph 7-2)Step 3.Inspect brake shoes, brake pads, and all components for proper operation andinstallation. (See paragraphs 7-7 and 7-11)2. BRAKES PULL WHEN APPLIEDStep 1.Step 2.Step 3.Step 4.Step 5.3. SENSITIVEStep 1.Check for incorrect tire pressure.Inflate all tires to recommended pressure. (See TM 9-2320-289-10)Inspect brake lines and hoses. (See TB 9-2300-405-14)Clear restrictions or replace if damaged or crimped. (See paragraphs 7-9and 7-10)Inspect for loose calipers.If calipers are loose, tighten bolts to specifications. (See paragraph 7-11)Have assistant press brake pedal and check for movement of caliper piston.If pistons are stuck or sluggish, replace caliper. (See paragraph 7-11)Check front wheel toe alinement. (See paragraph 8-6)BRAKING ACTION (M1009)Check to ensure that the correct power booster has been installed (M1009 only).(See paragraph 7-8)If correct power booster is on truck and condition still exists, replace powerbooster. (See paragraph 7-8)2-35
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