TM5-3820-256-10
3-6. Mud Pump. Troubleshooting procedures for the mud pump are listed in table 3-2.
a. The table lists the common malfunctions that you may find during the operation or maintenance of the mud pump
or its components. You should perform the tests/inspections and corrective actions in the order listed.
b. This manual cannot list all malfunctions that may occur, nor all tests/inspections and corrective actions. If a
malfunction is not listed or is not corrected by listed corrective action, notify your supervisor.
Table 3-2. Troubleshooting the Mud Pump
MALFUNCTION
TEST OR INSPECTION
CORRECTIVE ACTION
1.
MUD PUMP DOES
Step 1. Check to see if
Move mud pump switch to
NOT START.
mud pump on/off switch
ON position.
is on.
Step 2. Check to see if
Press to reset relay switch.
mud pump relay is tripped.
Step 3. Check to see if
Engage truck transfer case
truck transfer case power
power take-off.
take-off is engaged.
2.
MUD PUMP DOES
Step 1. Check to see if
Position and support suction
NOT DELIVER FLUID.
mud pump intake suction
screen properly in slush
screen is submerged in slush
storage pit.
storage pit.
Step 2. Check to see if
Clean suction screen and re-
mud pump intake suction
install it in the slush storage
screen is clogged.
pit.
Step 3. Check to see if
Open mast hose connection
mud pump discharge piping
shutoff valve and flow line
valves are open.
shutoff valve.
Step 4. Check for proper
Connect discharge piping
routing of mud pump dis-
routing hose to mud pump
charge piping.
discharge piping union.
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