Table 4-1. Troubleshooting - continued

Table 4-1. Troubleshooting - continued - TM-5-3820-256-24-1_38

Table 4-1. Troubleshooting - continued - TM-5-3820-256-24-1_40

TM-5-3820-256-24-1 Drilling System Manual
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Table 4-1. Troubleshooting - continued PROBLEM POSSIBLE CAUSE REMEDY Water leakage from Worn inlet manifold Install seals. If piston rod sleeves are under the inlet mani- seals. Leaking sleeve scored, replace sleeves and sleeve fold O-ring. O-rings. Oil leak between 1. Worn crankcase Replace crankcase piston rod seals. crankcase and piston rod seals. pumping section 2. Excess oil from wicks. Reduce quantity of oil per oiling. Oil leaking in the Worn crankshaft seal Remove oil seal retainer and replace area of crank- or improperly installed damaged gasket and/or seals. shaft oil seal retainer packing. Bad bearing. Replace bearing. Excessive play in Worn main ball bearing Replace ball bearing. Properly tension the end of the from excessive tension belt. crankshaft pulley on drive belt. Water in crankcase 1. May be caused by Change oil at 2 month or 200 hour inter- humid air condensing vals. into water inside the crankcase. 2. Leakage of manifold Replace seals, sleeve and O-rings. inlet seals and/or piston rod sleeve 0- ring. Oil leaking from Worn crankcase piston Replace seals. underside of rod seals. crankcase Oil leaking at the Damaged or improperly Replace oil gauge or cover O-ring, and rear portion of the installed oil gauge or drain plug O-ring. crankcase crankcase rear cover O-ring, and drain plug O-ring. Oil leakage from Loose drain plug or worn Tighten drain plug or replace O-ring. drain plug drain plug O-ring. Loud knocking 1. Pulley loose on crank- Check key and tighten set screw. noise in pump. shaft. 2. Broken or worn Replace bearings. bearing. 4-8

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