Table 4-1. Troubleshooting - continued
PROBLEM
POSSIBLE CAUSE
REMEDY
MUD PUMP & DRIVE
Mud pump clutch
1.
Insufficient air pres-
Inspect entire air line installation for
will not engage
sure.
any restrictions or leaks which could
decrease air supply to clutch.
Check operating valve for full opening.
Check tattle tale switch.
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
eliminate this problem. Avoid the use
of all rust inhibitors or commercial
antifreeze.
2.
Ruptured diaphragm.
Replace diaphragm.
3.
Drive ring worn out.
Replace drive ring.
Mud pump clutch
1.
Insufficient air pres-
Inspect entire air line installation for
slips.
sure.
any restrictions or leaks which could
decrease air supply to clutch.
Check operating valve for full opening.
Carefully inspect clutch for possible
air leakage at the diaphragm.
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
eliminate this problem. Avoid the use
of all rust inhibitors or commercial
antifreeze.
2.
Ruptured diaphragm.
Replace diaphragm.
3.
Drive rings worn out.
Replace drive rings.
4.
Dirt in drive ring.
Disassemble and clean.
Clutch drags or will
1.
Misalignment of clutch
Realign clutch and driving member.
not disengage
and driving member.
2.
Dirt in driving ring.
Disassemble and clean.
4-2
