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5. Thoroughly lubricate the two new o-rings and install
them in their respective grooves in the purge plate.
(See Figure 6.)
6. Set the desiccant sealing plate aside for reinstallation
on the desiccant cartridge.
REINSTALLING THE DESICCANT CARTRIDGE IN
THE AIR DRYER
If the desiccant cartridge is to be replaced as an assembly
rather than rebuilt (see the desiccant cartridge rebuilding
instructions), remove the cartridge from the air dryer.
The current revision replacement desiccant cartridge is
shown in Figure 7. All prior revisions of the cartridge will
interchange with no modifi cations to either air dryer.
Prior to installing the new replacement cartridge in the air
dryer, the following steps must be followed:
1. Carefully remove the lock nut from the cartridge bolt
using an 11/16 inch open end or box wrench.
IMPORTANT
Care must be taken not to allow the cartridge bolt to slip
out of the cartridge when the lock nut is removed. Loss
of desiccant material will occur should this happen.
2. Install the previously rebuilt desiccant sealing plate on
the cartridge bolt so that the ball check retaining clip
remains visible. (See Figure 15-1 & 15-2.)
3. While holding the cartridge bolt, reinstall the lock nut on
the cartridge bolt.
IMPORTANT
Before tightening the lock nut down, make certain that
the shoulder (the unthreaded portion) of the cartridge
bolt extends slightly above the perforated desiccant
plate. (See Figure 12.)
4. By tightening the lock nut, draw the desiccant sealing
plate down into the desiccant cartridge until the shoulder
of the desiccant sealing plate is against the cartridge
shell. (See Figure 15.)
Figure 8 – Desiccant Cartridge Assembly
8
Figure 9 – Oil Separator
REBUILDING THE DESICCANT CARTRIDGE
IMPORTANT
Only the current revision desiccant cartridges can be
rebuilt. (See Figure 7.) Current revision desiccant cartridges
are identifi ed positively by the Bendix trademark BW
stamped in the hex head of the cartridge bolt, and by
"AD-2" displayed on the bottom face of the oil fi lter. If an
old revision desiccant cartridge is removed from the
air dryer, it should be replaced with a complete current
revision desiccant cartridge.
Figure 10 – Cartridge Bolt Installation
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