Windsor-Severence Fire Protection District
Heavy Rescue
Production Specification
SVI #774 Page 33 of 126 April 19, 2010
FRONT AXLE
The front axle shall be a Meritor Easy Steer Non drive front axle, model number MFS-20. The axle shall include a 3.74
inch drop and a 71.00 inch king pin intersection (KPI). The axle shall include a conventional style hub with a standard
knuckle. The weight capacity for the axle shall be rated to 21,500 pounds FAWR.
FRONT AXLE WARRANTY
The front axle shall be warranted by Meritor for two (2) years with unlimited miles under the heavy service application.
Details of the Meritor warranty are provided on the PDF document attached to this option.
FRONT WHEEL BEARING LUBRICATION
The front axle wheel bearings shall be lubricated with oil. The oil level can be visually checked via clear inspection
windows in the front axle hubs.
FRONT SHOCK ABSORBERS
Two (2) Bilstein inert, nitrogen gas filled shock absorbers shall be provided and installed as part of the front suspension
system. The shocks shall be a monotubular design and fabricated using a special extrusion method, utilizing a single
blank of steel without a welded seam, achieving an extremely tight peak-to-valley tolerance and maintains consistent wall
thickness. The monotubular design shall provide superior strength while maximizing heat dissipation and shock life.
The ride afforded through the use of a gas shock is more consistent and shall not deteriorate with heat, the same way a
conventional oil filled hydraulic shock would.
The Bilstein front shocks shall include a digressive working piston assembly allowing independent tuning of the
compression and rebound damping forces to provide optimum ride and comfort without compromise. The working piston
design shall feature fewer parts than most conventional twin tube and “road sensing” shock designs and shall contribute
to the durability and long life of the Bilstein shock absorbers.
Proposals offering the use of conventional twin tube or “road sensing” designed shocks shall not be considered.
FRONT SUSPENSION
The front suspension shall include a nine (9) leaf spring pack in which the longest leaf measures 54.00 inch long and 4.00
inches wide and shall include a military double wrapped front eye. Both spring eyes shall have a case hardened threaded
bushing installed with lubrication counter bore and lubrication land off cross bore with grease fitting. The spring capacity
shall be rated at 21,500 pounds.
STEERING COLUMN/ WHEEL
The cab shall include a Douglas Autotech steering column shall be a seven (7) position tilt and 2.25 inch telescopic type
with an 18.00 inch steering wheel located on the left side of the cab designating the driver’s position. The steering wheel
shall be covered with black absorbite padding.
The steering column shall contain a horn button, self-canceling turn signal switch, four-way hazard switch and headlamp
dimmer switch.
POWER STEERING PUMP
The hydraulic power steering pump shall be a TRW PS and shall be gear driven from the engine. The pump shall be a
balanced, positive displacement, sliding vane type.
(112 paginas)
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