TROUBLESHOOTING-continued

TM 5-5430-226-12

3-2. TROUBLESHOOTING-cont.

Table 3-1. Operator Troubleshooting - cont.

MALFUNCTION

TEST OR INSPECTION

CORRECTIVE ACTION

2. DRAIN HOSE ASSEMBLY LEAKS.

Step 1. Verify that drain hose control valve is closed.

Close control valve.

Step 2. Inspect for water leakage at control valve stem.

Notify unit maintenance.

Step 3. On tanks manufactured by Amfuel Company, inspect for water leakage at cam-lock couplings.

Verify that cam-lock levers are securely closed.

Notify unit maintenance.

WARNING

To prevent injury to personnel and damage to the equipment, do not open coupling lock arms

when water is stored in tank.

NOTE

Some tanks have vent fitting assembly with a coupling connection near the base and some tanks

have a single piece flanged pipe.

3. VENT FITTING ASSEMBLY LEAKS.

Step 1. Determine whether this model has a vent pipe with a coupling connection. If so, check for loose vent pipe

coupling connection.

Close coupling lock arms.

Step 2. Check for loose or missing bolts on water tank coupling half.

If bolts are loose or missing, notify unit maintenance.

CAUTION

To prevent damage to water tank, the following steps should only be performed when tank is

empty.

Step 3. Check for dirt, bits of gravel, and debris on relief cap seal.

Lift relief cap and clean mating surfaces of relief cap and seal.

Step 4. Check for bent or broken vent cap pivot pin.

3-2