TM 10-4610-215-24
TM 08580A-24/2
Table 3-1. Troubleshooting.
MALFUNCTION
TEST OR INSPECTION
CORRECTIVE ACTION
CHEMICAL FEED PUMP
1. MOTOR RUNS. ONE OR MORE PUMP HEADS WILL NOT DELIVER CHEMICAL.
Step 1.
Check adjustment valves and pump body for clogging.
Clean openings.
Step 2. Check prime/run valves for clogging or damage.
Clean valves or replace damaged valves.
Step 3. Check piston rod movement. (ARMY)
a. Clean piston rod or replace packing.
b. Replace broken spring. Check and secure connection on the drive shaft.
Step 4. Check diaphragm. (USMC)
Replace damaged or ruptured diaphragm.
2. MOTOR RUNS. ALL PUMPS FAIL TO OPERATE.
Step 1.
Check for loose or broken drive coupling.
a. Tighten drive coupling setscrew.
b. Replace broken coupling.
Step 2. Check for broken or damaged worm gear or worm wheel.
Replace broken worm gear or worm wheel.
3. FLOW RATE CANNOT BE ADJUSTED.
Step 1.
Check spindle for binding.
Clean spindle or replace if damaged.
Step 2. Check for broken or defective spring.
Replace if necessary.
3-3
