CHAPTER 5. DIRECT SUPPORT AND GENERAL SUPPORT MAINTENANCE INSTRUCTIONS

CHAPTER 5

DIRECT SUPPORT AND GENERAL

SUPPORT MAINTENANCE INSTRUCTIONS

Section I. REPAIR PARTS, SPECIAL TOOLS, AND EQUIPMENT

the pump assembly. Repair parts and special tools

5-1. Special Tools and Equipment

required for direct and general support maintenance of

No special tools and equipment are required to perform

this equipment will be found in TM 5-4320-242-24P and

direct and general support maintenance on

TM 5-2805-259-24P.

Section II. TROUBLESHOOTING

5-2. General

malfunction can be isolated and corrective actions

This section describes malfunction which might occur

taken.

Refer to TM 5-2805-259-14 for engine

during operation of the pump assembly along with the

troubleshooting instructions.

tests or inspections to be performed so that the

Table 5-1. Troubleshooting

MALFUNCTION

TEST OR INSPECTION

CORRECTIVE ACTION

1. PUMP FAILS TO DISCHARGE, CAPACITY DECREASES OR PRESSURE DROPS.

Check to am if engine lacks power.

If engine lacks power refer to TM 5-2805-259-14.

Check to see if gate valves are defective.

Repair or replace gate valve (para 6-5).

Check to see if suction manifold gaskets are defective.

Replace gaskets (para 5-4).

Check to see if suction manifold assembly hardware is loose.

Tighten suction manifold assembly hardware (para 5-4).

Inspect to see if suction strainer cover is loose or defective.

Tighten or replace suction strainer cap clamp. (para 5-4).

Check for damaged or broken impeller.

Replace impeller (para 6-3).

Inspect volute housing for a damaged or cracked condition.

Replace volute housing (para 6-4).

Inspect seal assembly for a defective condition.

Replace seal assembly.

Check intermediate housing for a cracked or defective condition.

Replace intermediate housing (para 6-3).

Inspect for loose suction hose connection.

Tighten hose connections.

2. PUMP VIBRATES OR DEVELOPS EXCESSIVE NOISE.

Inspect impeller for a damaged or broken condition.

Replace impeller (para 6-3).

Inspect for defective impeller shaft bearing.

Replace bearing (para 6-)1.

Section III. REMOVAL AND INSTALLATION OF MAJOR COMPONENTS AND ASSEMBLIES

5-3. Suction Manifold and Strainer Body Assembly

suction manifold and strainer body assembly.

a. Removal. Refer to figure 5-1 and remove the

b. Installation. Refer to figure 5-1 and install the

suction manifold and strainer body assembly.

5-1