Structural Firefighting Test

TM 5-4210-233-14&P-1

4-4.

INTRODUCTION - Continued

(5)

Allow engine to warm up to 170-195 deg. F (77-90 deg. C).

(6)

Check receptacles on both sides of hose body (110 V, 60 Hz) and lower engine speed to low idle.

(7)

Visually inspect engine and transmission for signs of leakage (coolant, fuel, or oil).

(8)

Open drain valves on all air reservoirs and drain all condensate.

Truck Test.

(1)

Set transmission shift to D (drive), release parking brake and drive vehicle at low speed, checking

operation of brakes, steering, and throttle.

(2)

Check operation of differential lock selectors.

(3)

Check operation of all transmission gear ranges.

Fire Pump Test.

(1)

With transmission in drive, set electric pump shift to pump.

(2)

Move transmission shift lever to neutral.

(3)

Start fire pump and check pump discharge pressure exceeds 250 psi (336 kPa).

Structural Firefighting Test.

(1)

Engage pump.

(2)

Control discharge pressure of pump using hand throttle on the street side pump panel.

(3)

Check operation of both crosslay hoses.

(4)

Check operation of all structural hoses and other fire equpment.

(5)

Connect front or side suction to a hydrant.

(6)

With pump running, open hydrant valve and tank fill valve and check tank fills.

(7)

Ensure that with two crosslay hoses operational and nozzle operating, that pump maintains level of

tank at greater than 75%.

(8)

Close all hose and turret valves and refill tank to 100%. Close tank fill valve.

(9)

Disengage pump and remove suction hose from truck and hydrant.

(10)

Replace all hoses in their storage position.

4-9