Table 4-1. Troubleshooting - continued
Clutch drags or will
3. Tight center plate.
Replace center plate.
not disengage -
1. Clutch slippage.
Refer to Mud Pump Clutch Slips.
2. Misalignment of
Align clutch and member.
clutch and driving
3. Dirt in driving ring
Disassemble and clean.
4. Plates not free on
Disassemble and clean, de-burr or re-
place defective parts.
1. Pressure plate and
Disassemble, clean or replace if de-
insulation not fully
2. Excessive wear from
Realign clutch and driven member. Re-
misalignment or from
fer to Clutch Drags or Will Not Dis-
clutch not fully dis-
Mud pump does not
1. Clutch slipping.
See Mud Pump Clutch Slips symptom,
2. Broken universal
Inspect universal joints in mud pump
joint in drive line.
drive line. Replace any found defective.
3. Internal damage to
Remove drive assembly inspection plate.
Inspect shafts, sprockets, and drive
chains. Replace damaged parts .
4. Damage in mud
Remove power frame hood. Inspect
pump power frame.
shafts, sprockets, drive chains and con-
necting rods for breakage. Replace
Mud pump operates
1. Excessive worn fluid
Replace fluid valves and seats.
but does not move
valves and seats.
2. Excessively worn
Replace piston cups and cylinder liners.
piston cups and