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MIL-T-26025E (USAF)
Coolant temperature gauge and high engine coolant temperature warning light.
o.
Low brake system air pressure warning light.
p.
Rear axle centered indicating light (indicating when the rear wheels are centered).
q.
r.
Winterization receptacle power on light.
Climate control system.  The cab's climate control system shall consist of the manufacturer's
3.4.6
standard heavy duty heater and two outlet defroster. The heavy duty heater must, as a minimum, be
capable of maintaining a 50 F' inside temperature when set at mid level during a -10 F ambient
temperature for Type "C" winterization and a -40F ambient temperature for Type "A' winterization (see
6.2). The heater shall have a three speed blower as a minimum.
er fan.  The tractor shall be equipped with one fully adjustable, fully enclosed fan with
3.4.6.1
integral on/off switch mounted inside the cab on the cab roof. It shall be mounted approximately 12 inches
from the rear window.
Cowl or engine cover.
The engine shall be completely covered by a cowl or engine cover. On
3.4.7
conventional design, the cowl or hood shall be hinged. The engine shall be accessible to one person.
The compartment shall have sufficient access doors and access panels
3.4.7.1 Engine compartment.
to permit repair maintenance and easy removal of all installed components. The engine dipstick shall be
accessible without subjecting personnel to excessive reaching or bending.
All access doors other than cab doors shall be equipped with the
c o wling and access doors.
3.4.7.2
following:
a.
Door stays shall provide mechanical assistance in opening and closing doors and
incorporate a positive lock to hold the doors in the open position.
Door latches and mechanisms shall be operable by personnel wearing arctic type gloves.
b.
c.
Door must have stops capable of stopping door when exposed to 50 MPH wind from any
direction.
lect rical system.  The vehicle shall be equipped with a 12 volt electrical system; a 24 volt
3.5
starting system may be provided. Wiring shall be weatherproof and color coded or numbered for easy
identification. All circuits shall be protected by circuit breakers located in the cab so as to be readily
accessible to a mechanic. A master switch shall be provided to disconnect the batteries from the electrical
system. The system shall have a negative ground.
Alternator.
The engine shall be equipped with an alternator sufficient for operating all
3.5.1
vehicle electrical components simultaneously. Minimum capacity of the alternator shall be 12 volts, 60
amperes, and shall have the capability to charge the battery(s) with all electrical accessories operating at
engine idle RPM.
3.5.2
Batteries. The vehicle shall be equipped with at least one 12 volt battery, rated at a total of 1,800
CCA minimum. The batteries shall comply with the maintenance free characteristics of W-B-131.
Batteries shall be so arranged and connected to provide sufficient capacity for engine starting in all
conditions specified herein, The batteries shall be mounted in an acid-resistant tray; a sliding carriage
shall be provided if the batteries must be moved sideways to permit access for servicing or replacement.
16

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