PUMP AND ROLL PROCEDURES.

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PUMPING FROM HYDRANT OR IN RELAY (POSITIVE WATER SOURCE). (Cont)

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TM-9-2320-279-10-3 M977 Series 8x8 Heavy Expanded Mobility Tactical Trucks (HEMTT) Manual

PUMP AND ROLL PROCEDURES. (Cont)

TM 9-2320-279-10-3

Operation Under Usual Conditions (Cont)

2-119. PUMP AND ROLL PROCEDURES.

RADIO1

AUTO

RADIO

TALK

LISTEN

RADIO2

BOTH

INTERCOM

SQUELCH

VOLUME

tfft00326p

WARNING

Open and close all valves slowly during any

procedure. Sudden changes in pressure may cause

equipment to react faster than personnel can be

alerted. Make sure surrounding personnel are aware

of changes being made to settings on equipment.

Failure to comply may result in injury or death to

personnel and damage to equipment.

Pump and roll procedures must be performed from

truck cab. Do not use pump operators panel for pump

and roll procedures. Failure to comply may result in

injury or death to personnel.

Due to poor driver visibility to curb side of vehicle over

doghouse and cab mounted equipment, a crew member

must be seated in passenger seat when vehicle is in motion.

Failure to comply may result in damage to equipment or

injury or death to personnel.

NOTE

For maximum bumper turret and roof turret performance,

maintain 200-210 psi (1,379-1,448 kPa) on pump

discharge gage.

a. Make sure crew cab roof hatch is closed and secured (para 2-108).

b. Put TANK TO PUMP switch (1) in ON position. Indicator light (2) will

come on.

c. Start water pump engine (para 2-113).

d. Prime water pump (para 2-114) until pressure registers on pump

discharge gage.