|
| |
TM 5-4320-228-13&P
4-6.1.
Troubleshooting.
Table 4-1 is used for organizational maintenance activity
troubleshooting.
This table is to be used in conjunction with the
preventive maintenance troubleshooting table contained in 2-1.
Table 4-1.
Maintenance Activity Troubleshooting.
MALFUNCTION
TEST OR INSPECTION
CORRECTIVE ACTION
1.
2.
3.
PUMP FAILS TO PUMP TO RATED CAPACITY.
Step 1 - Check if check valve is defective.
Replace check valve.
(Refer to 4-6.4)
Step 2 - Check if impeller is clogged or broken.
Flush pump case or replace impeller.
(Refer to 4-6.2)
Step 3 - Check pump case for leaks, cracks, or damage.
Repair or replace case.
(Refer to 4-6.2)
Step 4 - Check if packing seals are worn or defective.
Replace packing seals.
(Refer to 4-6.2)
Step 5 - Check if clearance between wear plate and impeller
is excessive.
Install shims as required.
(Refer to 4-6.2)
PUMP FAILS TO PRIME.
Step 1 - Check if check valve is defective.
Replace check valve.
(Refer to 4-6.2)
Step 2- Check if suction flange is loose or defective.
Tighten mounting nuts or replace suction flange.
(Refer to 4-6.4)
Step 3 - Check if packing seals are worn or defective.
Replace impeller.
(Refer to 4-6.2)
Step 4 - Check if impeller is damaged.
Replace impeller.
(Refer to 4-6.2)
PUMP NOISY.
Step 1 - Check if pump mounting hardware is loose.
Tighten pump mounting hardware. (Refer to 4-6.2)
4-8
|
