Drain Line Valve

e. Inspection an Repair. Inspect piston before

placing in body. Inspect all parts for wear, defects, and

b. Removal. Remove the water tank drain valve

damage.

Replace or repair worn, defective, or

(TM 5-4210-213-12).

damaged parts as necessary.

c. Disassembly

Refer to figure 3-4 and

f. Reassembly.

Refer to figure 3-6 and

disassemble the water tank drain valve.

reassemble the relief valve control in the reverse order.

d. Cleaning. Clean all parts in an approved

g. Installation Install the relief valve control (TM

cleaning solvent and dry thoroughly.

5-4210-213-12).

e. Inspection and Repa.r Inspect all parts for

wear, defects, and damage. Replace or repair worn,

3-8. Foam Tank Drain Valve and Foam Valve

defective, or damaged parts as necessary.

a. General. The foam tank drain valve provides a

f. Reassembly.

Refer to figure 3-4 and

method of draining the foam tank. The foam valve

reassemble water tank drain valve in the reverse order.

allows foam to flow from the tank to the fire pump.

g. Installation. Install the water tank drain valve

b. Removal. Refer to TM 5-4210-213-12 and

(TM 5-4210-213-12).

remove the foam tank drain valve and foam valve from

the pump assembly.

3-6. Drain Line Valve

c. Disassembly.

Refer to figure 3-7 and

a. General. The drain line valve provides a

disassemble the foam tank drain valve and foam valve.

method of draining the drain line.

d. Cleaning. Clean all parts in an approved

b. Removal. Remove the drain line valve (TM 5-

cleaning solvent, and dry thoroughly.

4210-213-12).

e. Inspection and Repa.r Inspect all parts for

c. Disassembly.

Refer to figure 3-5 and

wear, defects, and damage. Replace or repair worn,

disassemble the drain valve.

defective, or damaged parts as necessary.

d. Cleaning

Clean all parts in an approved

f. Reassembly

Refer to figure 3-7 and

cleaning solvent and dry thoroughly.

reassemble the foam tank drain valve and foam valve in

e. Inspection and Repa.r Inspect all parts for

the reverse order.

wear, defects, and damage. Replace or repair worn,

g. Installation. Refer to TM 5-4210-213-12 and

defective, or damaged parts as necessary.

install the foam tank drain valve and foam valve on the

f. Reassembly.

Refer to figure 3-5 and

pump assembly.

reassemble the drain line valve in the reverse order.

g. Installation Install the drain line valve (TM 5-

3-9. Foam Metering Valve

4210-213-12).

a. General. The foam metering valve regulates

the flow of foam from the fire pump.

3-7. Relief Valve

b. Removal. Refer to figure 3-1 and remove the

a. General.

The relief valves regulate the

foam metering valve.

pressure in the system.

c. Disassembly.

Refer to figure 3-8 and

b. Removal. Remove the relief valve control (TM

disassemble the foam metering valve.

5-4210-213-12).

d. Cleaning. Clean all parts in an approved

c. Disassembly.

Refer to figure 3-6 and

cleaning solvent and dry thoroughly.

disassemble the relief valve control.

e. Inspection and Repair. Inspect all parts for

d. Cleaning

Clean all parts in an approved

wear, defects, and damage. Replace or repair worn,

cleaning solvent and dry thoroughly.

defective, or damaged parts as necessary.

Caution: Do not use abrasives.

3-2