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TM 5-4210-230-14&P-1
VEHICLE MAINTENANCE
AXLE-REAR (With Locking Differential)
CAUTION
To avoid personal injury or property damage,
pay strict attention to the following:
If a truck is equipped with a locking
differential, power will be transmitted to the
opposite rear wheel or axle if one of the rear
wheels or axles slips. Both rear wheels or
both rear axles must be raised free of ground
if it is necessary to operate one rear wheel
with truck stationary; otherwise, the wheel or
axle that is not raised will pull vehicle off its
support.
BODY-CAB
Frequent and regular washing will lengthen the life of
your new vehicle's painted finish and bright metal trim.
WASHING: Wash your vehicle often with warm or cold
water to remove dirt and preserve the original luster of the
paint. Never wash the vehicle in the direct rays of the hot sun
or when the sheet metal is hot to the touch, as this may cause
streaks on the finish. Do not use hot water or strong soaps or
detergents or wipe off dirt when the surface is dry as this will
scratch the paint.
WAXING OR POLISHING VEHICLES : Prior to use of any
wax or polish, vehicle must be thoroughly washed.
BRIGHT METAL CARE: Bright metal such as
anodized aluminum, chrome and stainless steel, require the
same washing as painted surfaces. A non-abrasive chrome
cleaner may be used sparingly to clean the bright metal. Do
not use steel wool. Use of automobile wax or polish on bright
metal usually will restore the original brightness.
UPHOLSTERY CARE: Use a whisk broom and vacuum
cleaner to remove loose dust and dirt from upholstery and
floor. Vinyl and woven plastic upholstery can be washed with
warm water and mild soap, wipe dry. If commercial cleaners
are used, follow instructions supplied with cleaner.
BRAKES (Air)
AIR COMPRESSOR (Air Cleaner)
Some engines are equipped with air compressors that
have an air cleaner mounted directly to the air compressor.
For servicing, refer to Engine Lubrication Section.
AIR RESERVOIR MOISTURE DRAINING
Moisture taken in with the air through the compressor
inlet valves collects in the reservoirs and NECESSITATES
DRAINING THE RESERVOIR DAILY IN COLD WEATHER
AND ONCE A WEEK IN WARM WEATHER by opening the
drain cock located either on the bottom of the tank or in the
end of the tank. If in the end of the tank, there must be some
air pressure in the system to assure proper drainage. Be sure
to close the drain cocks after all moisture has been expelled.
The Automatic Reservoir Drain Valve ejects moisture
and contaminants from the reservoir in which it is connected.
It operates automatically and requires no manual assistance
or control lines from other sources.
BRAKE ANTILOCK SYSTEM
The brake antilock monitor (warning) light may be used
to quickly trouble shoot the antilock system. The warning light
will indicate to the operator or serviceman that the system is
functioning properly or not.
Satisfactory System
A satisfactory antilock system is indicated each time
the ignition key switch is turned to either "ON" or "RUN"
position
with
the
antilock
warning
light
momentarily
illuminating, followed by the light going out and remaining off.
This indicates that the computer modules are receiving power
and the solenoid valves are properly connected to the
computer modules.
Warning Light Will Not Illuminate
No light when the ignition key switch is turned "ON"
could be the result of no power to the antilock system or the
light bulb is burned out. Check for bad fuse or light bulb.
Warning Light Remains On
If the warning light should remain "ON" a problem is
indicated in the antilock control system. Should this condition
occur the service brakes will function in the normal manner;
however, the vehicle will not have the added safety and
advantage of the antilock.
If the antilock warning light comes on and stays on, the
antilock system should have an "Ignition Cycle Check"
performed to determine if all or any computer modules and air
control valves are operating satisfactorily. Refer to "Ignition
Cycle Check".
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