TM 10-4610-234-13
Table 4-2. Unit Troubleshooting.
Be sure to read ALL Warnings on front of manual before troubleshooting.
Malfunction
Test or Inspection
Corrective Action
1.2-INCH GATE VALVE LEAKS.
Step 1. Check for loose gland nut.
Tighten gland nut 1/4 turn.
Step 2. Inspect gate valve body for cracks.
Replace gate valve (refer to para. 4.14).
2.4-INCH GATE VALVE LEAKS.
Step 1.
Step 2.
Step 3.
Step 4.
Step 5.
Check for loose gland nut.
Tighten gland nut 1/4 turn.
Check for loose nuts at flanged coupling.
Tighten flanged coupling nuts and bolts (refer to para. 4.24).
Check for damaged or missing coupling gaskets.
Replace gaskets (refer to para. 4.24).
Check for damaged or missing flange gaskets.
Replace gaskets (refer to para. 4.24).
Inspect gate valve body for cracks.
Replace gate valve (refer to para. 4.24).
3. DISCHARGE OR SUCTION HOSE LEAKS.
Step 1.
Step 2.
Step 3.
Step 4.
Check for damaged or missing coupling gaskets.
Replace gaskets (refer to para. 4.13).
Inspect hose for cracks,tears and punctures.
Replace hose (refer to para. 4.13).
Inspect for cracked quick disconnect couplings.
Replace couplings (refer to para. 4.13).
Inspect for loose or missing strap clamps.
Replace strap clamps (refer to para. 4.1 3).
4. CHECK VALVE LEAKS.
Step 1.
Step 2.
Check for damaged or missing coupling gasket.
Replace gasket (refer to para. 4.28).
Inspect for cracked quick disconnect couplings.
Replace couplings (refer to para. 4.28).
4-7
