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MAINTENANCE
SECTION 8
Page11
ALCOHOL EVAPORATOR (If equipped)
The function of the alcohol evaporator is to inject alcohol
vapor into the air system to prevent condensation from
accumulating in the brake system. Warm air from the
compressor passes through the evaporator and evaporates
small amounts of alcohol. This air alcohol mixture is then
piped into the air system.
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CAUTION: DO NOT SMOKE OR USE OPEN
FLAME IN OR AROUND AREA WHEN
SERVICING ALCOHOL EVAPORATOR.
Fill the evaporator tank daily. To fill, remove the filler plug
(1, Illust. 14) and pour in methyl alcohol. Reinstall the filler
plug.
NOTE: A drain valve is located at the bottom of the tank if it
is ever necessaryto drain the evaporator.
Belts on new machines and replacement belts lose their
tension as they seat into the pulley grooves. If the tension
falls below a required minimum, the belts will slip, damaging
the belts and pulley grooves.
SERVICE BRAKES
This machine is equipped with manual-adjusting air over
hydraulic brakes.
The brake system is divided into two separatecircuits, each
having its own air and hydraulic supply. One circuit operates
the front brakes and the second operates the rear brakes. In
the event of a failure in one circuit, the braking system still
retains braking effort in the remaining circuit.
When the brake pedal is applied, air pressure in the brake
power cluster air chamber forces a piston in the brake power
Illust. 14
Alcohol Evaporator Filler Plug.
BELTS
Refer to your Cummins Engine Operator's Manual for belt
tensioning and replacement information. If equipped with an
air-conditioner, refer to "AIR-CONDITIONER"
in this sec-
tion for freon compressor belt retensioning information.
BRAKES
clusters hydraulic (master) cylinder to pressurize brake fluid
to the wheel cylinders. This pressurizedfluid forces plungers
to expand the brake shoesagainstthe brake drum.
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CAUTION: TRAPPED AIR
IN THE HY-
DRAULIC BRAKE LINES BETWEEN THE
BRAKE
POWER CLUSTERS AND THE
WHEEL CYLINDERS REDUCES BRAKING EFFECT-
IVENESS. BLEED THE BRAKES.
(Continued on next page)
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