Specifications

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The pump shall include o-ring gaskets throughout the pump.
Deep groove radial type oversize ball bearings shall be provided. The bearings shall be protected at
the openings from road dirt and water with an oil seal and water slinger.
The pump shall have a flat, patterned area on the top of the pump intake wye to allow standing for
plumbing maintenance. The main inlet manifold shall be 6.00" in diameter and shall have a low profile
design to facilitate low crosslays and high flows.
For ease of service, the pump housing, intake wye, impeller, mechanical seal, and gear case shall be
accessible from above the chassis frame by tilting the cab. The intake wyes shall be removable without
having to remove the main intake casting. Removal of the main inlet wyes shall provide access to the
impeller, mechanical seal, and wear ring. (No exception).
The tank to pump line and the primary discharge line shall be the only piping required to be removed
for overhaul.
For ease of service and overhaul there shall be no piping or manifolding located directly over the
pump. (No exception).
PUMP MOUNTING Bidder Complies: Yes ( ) No ( )
Pump shall be mounted to the chassis frame rails directly below the crew cab, to minimize wheelbase
and facilitate service, using rubber isolators in a modified V pattern that include two (2) central
mounted isolators located between the frame rails and one (1) on each side outside the frame
rails. The mounting shall allow chassis frame rails to flex independently without damage to the fire
pump. Each isolator shall be 2.55" in total outside diameter and shall be rated at 490 lb. The pump
shall be completely accessible by tilting the cab with no piping located directly above the pump.
MECHANICAL SEALS Bidder Complies: Yes ( ) No ( )
Silicon carbide mechanical seals shall be provided. The seals shall be spring loaded and self-
adjusting. The seals shall have a minimum thermal conductivity of 126 W/m*K to run cooler. Seals
shall have a minimum hardness of 2800 kg/mm2 to be more resistant to wear, and have thermal
expansion characteristics of no more than 4.0 X106mm/mm*K to be more resistant to thermal shock.
PUMP GEARCASE Bidder Complies: Yes ( ) No ( )
Pump gearcase shall be a pressure-lubricated gearcase to cool, lubricate, and filter the oil. The
gearcase shall include an auxiliary PTO opening. The gearcase shall be constructed of lightweight
aluminum, and impregnated with resin in accordance to MIL Spec MIL-I-17563. A dipstick, accessible
by tilting the cab, shall be provided for easy fluid level checks. A filter screen shall be provided for long
life.
The gearcase shall consist of two (2) gears to drive the pump impeller and one (1) for the auxiliary
PTO.
The auxiliary PTO opening shall provide for the addition of PTO driven accessories.
The pump shall be driven through the rear engine power take-off and clutch. The rear engine power
take-off drive shall be live at all times to allow for pump and roll applications. Rear engine power take-
off's allow for high horsepower and torque ratings needed for large pump applications, and is a proven
drive system throughout the rugged construction industry. (No exception).
CLUTCH Bidder Complies: Yes ( ) No ( )
There shall be a heavy-duty electric clutch mounted directly to the front of the pump to engage and
disengage the pump without gear clash. The clutch shall be a multiple disc design for maximum
torque. The clutch shall be fully self-adjusting to provide automatic wear compensation, and consistent
torque throughout the life of the clutch. Positive engagement and disengagement shall be provided
through a high efficient and dependable magnetic system to assure superior performance. The clutch