Operator`s manual

Maintenance 115
Air Tanks
WARNING
When draining the air tanks, DO NOT
look into the area of the draining air.
Dirt or sludge particles may be in the air
stream that could cause eye injury.
Air tanks should be drained daily. Make sure
the drain cocks close properly after draining.
Empty moisture from air tanks by pulling the
drain valve lanyard or pull cord. The tanks
should be checked for condensation fluid,
even if an automatic drain valve is installed.
It is very important that the air system is
kept clean. Air reservoirs should be drained
daily or even twice a day on very hot days.
Daily drainage expels any condensation in
the air reservoirs. If sludge or oil is found in
the drainage, the air compressor should be
checked for proper operation.
If an excessive amount of fluid is drained out
of the tanks (even when drained daily) have
the system checked for possible problems
with the air dryer.
W8003393
Air Dryers
Air dryers have a regeneration system that
cleans out the accumulated moisture but
eventually the drying medium will be filled
up. Change the dryer cartridge when more
water than usual is noticed at the daily tank
drainings. The volume of daily drain water
will change depending on temperature,
geographical location and how much the
brakes are used.
Dryer manufacturers recommends changing
the cartridge every 2 to 3 years but the
intervals need to be adjusted for vehicle
application. In hot, coastal climates, the
cartridge may have to be changed every year.