Specifications

102 SEBU7858-03
Maintenance Section
Air Dryer Desiccant - Replace
4. If there is mois
ture in the air tank, replace air
dryer desiccant cartridge (3) or rebuild air dryer
desiccant cartridge (3). Consult your Caterpillar
dealer for inf
ormation about replacing air dryer
desiccant cartridge (3) and for instructions for
rebuilding air dryer desiccant cartridge (3).
Note: Small amounts of moisture may be in the
system due to condensation in the system. Moisture
mayalsobei
n the system if an air dryer is installed
on a machine that has been operating without an air
dryer. Several weeks may b e required in order to
completely
dry the system.
i01778591
Air Dryer Desiccant - Replace
SMCS Code: 4285-510-DSS
S/N: DBD1-Up
Air lines to and from the air dryer must be at
atmospheric pressure. Release the air pressure
from th
e air system completely before performing
maintenance.
g00909536
Illustration 104
Replace the air dryer desiccant cartridge or rebuild
the air dryer desiccant cartridge if water cannot be
absorbed. Consult your Caterpillar dealer for service
or for replacement parts.
i01778832
Air Tank Moisture and
Sediment-Dra
in
SMCS Code: 4272-543-M&S
The air tanks should have some air pressure.
Check the ai
r tanks at the end of the shift for moisture
and for sediment.
Moisture an
d sediment can accumulate in the air
tank. This can lead to a low reserve of air. The air
dryer may need to be serviced. Refer to Operation
and Mainte
nance Manual, “Air Dryer - Check” for
further information.
If oil is dr
aining from the tanks, consult your
Caterpillar dealer.
g00909442
Illustration 105
Three valves (1) are on the left side of the tractor.
The valves are located in the recess for the step.
Open the valves. Allow the moisture and the sediment
to drain into a suitable container. Close the valves.