Table 4-1. Troubleshooting - continued

Table 4-1. Troubleshooting - continued - TM-5-3820-256-24-1_42

Table 4-1. Troubleshooting - continued - TM-5-3820-256-24-1_44

TM-5-3820-256-24-1 Drilling System Manual
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Table 4-1. Troubleshooting - continued PROBLEM POSSIBLE CAUSE REMEDY Brake will not 1. Control linkage out Adjust control linkage. Hold of adjustment. 2. Worn brake lining. Replace brake lining. 3. Brake lining wet. Replace brake lining. Brake will not 1. Control linkage out of Adjust control linkage. Release adjustment. 2. Broken brake lining. Replace brake lining. 3. Grease on brake Replace brake lining. lining. 4. Grease on brake Replace brake lining. lining. No output from Broken or stripped Disassemble drive assembly and replace drive assembly drive gears. any defective parts. Excessive noise 1. Worn bearings on Replace any worn bearings. shaft or in drive assembly. 2. Broken or worn gears Replace broken or worn gears. in drive assembly. HOISTING DRUM Clutch will not 1. Insufficient air pres- Inspect entire air line installation for engage sure. any restrictions or leaks which could decrease the air supply to the clutch. Check operating valve for full opening. If operating in cold weather, the air lines may be restricted due to freezing of the moisture in the air system. The addition of Denatured alcohol or Ethy- lene Glycol in the air receiver will eli- minate this problem. Avoid the use of all rust inhibitors or commercial anti- freeze. 2. Ruptured tube. Replace tube. 3. Malfunctioning quick Rebuild or replace quick release valves. release valves. 4-12

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