freightliner MC - Page 106

tridge that was originally installed on the dryer. Oil
coalescing cartridges can be used in any applica-
tion, but require more frequent service intervals
(every 1 to 2 years instead of every 2 to 3 years
for a standard cartridge). Do not replace an oil co-
alescing cartridge with a standard cartridge, as
this may result in contamination and malfunction-
ing of downstream air system components.
Refer to
Fig. 5 for cartridge replacement.
1. Drain the air system.
2. Using a strap wrench, turn the desiccant car-
tridge counterclockwise and remove it.
3. Remove and discard the O-ring.
4. Clean the top surface of the dryer base with a
commercial cleaning solvent.
IMPORTANT: If the air dryer base is damaged,
preventing a tight seal, replace the air dryer.
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B
B
A
A. Canister/cartridge assembly shown upside-down.
B. Rotate the cartridge counterclockwise 45 degrees to
release it from the canister.
Fig. 2, Releasing the Cartridge
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Fig. 3, New Cartridge with Rubber Spring
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B
B
A
A
A
A. Install the new cartridge into the canister.
B. Press the cartridge into the canister and rotate
clockwise 45 degrees to engage the cartridge.
Fig. 4, Cartridge Rotation and Engagement
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Recreational Vehicle Chassis Maintenance Manual, July 2018 42/5