Table 4-1. Troubleshooting - continued

Table 4-1. Troubleshooting - continued - TM-5-3820-256-24-1_45

Table 4-1. Troubleshooting - continued - TM-5-3820-256-24-1_47

TM-5-3820-256-24-1 Drilling System Manual
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Table 4-1. Troubleshooting - continued PROBLEM POSSIBLE CAUSE REMEDY THIRD DRUM Clutch Slipping 1. Out of adjustment. 1. Adjust clutch or linkage. 2. Worn clutch plates. 2. Replace clutch plates. 3. Grease or oil on 3. Replace clutch plates. plates. Clutch jumps out 1. Out of adjustment. 1. Adjust clutch. of engagement 2. Worn dog on lever 2. Replace lock dog. lock mechanism. Clutch drags or will 1. Control linkage out 1. Adjust linkage. not release or adjustment. 2. Weak release springs. 2. Replace springs. 3. Clutch collar not 3. Realign collar and fork. aligned with shift fork. Clutch Overheats 1. Clutch slippage. 1. Refer to "Clutch Slipping". 2. Out of adjustment. 2. Adjust clutch. Clutch Noisy 1. Out of adjustment. 1. Adjust clutch. 2. Clutch plates not 2. See "Clutch drags or will not fully disengaging. release". 3. Worn clutch plates. 3. Replace clutch plates. Brake will not hold 1. Control linkage out Adjust control linkage. of adjustment. 2. Worn brake lining. Replace brake lining. 3. Grease or oil on Replace brake lining. lining. Brake grabs 1. Broken brake lining. Replace brake lining. 2. Grease on brake Replace brake lining. lining. Third drum jerks 1. Stretched drive Replace drive chains. or does not rotate chains. 2. Damaged or worn Inspect drive gears. Replace if gears in drive assem- damaged or worn. bly. 3. Broken teeth on Replace damaged sprocket. drive sprocket. 4-15

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