BENDIX AD-2 AIR DRYER Manual - Página 8

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REINSTALLING THE DESICCANT CARTRIDGE

AD-1

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AND AD-2

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AIR DRYER

If the desiccant cartridge is to be replaced as an assembly

rather than rebuilt (see desiccant cartridge rebuilding

instructions), the cartridge removed 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 modifications 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 in. 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)

REBUILDING THE DESICCANT CARTRIDGE

IMPORTANT: Only the current revision desiccant cartridges

(See Figure 7) can be rebuilt. Current revision desiccant

cartridges are identified positively by the Bendix trademark

BW stamped in the hex head of the cartridge bolt, and by

the letters and number AD-2

bottom face of the oil filter. If an old revision desiccant

cartridge is removed from the air dryer, it should be

replaced with a complete current revision desiccant

cartridge.

FIGURE 8 - ASSEMBLY OF DESICCANT CARTRIDGE

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air dryer displayed on the

FIGURE 9

DISASSEMBLY OF DESICCANT CARTRIDGE

1. Carefully remove and discard the lock nut on top of the

desiccant sealing plate. (The plate is spring loaded; see

"Caution" note in "Removal of Desiccant Cartridge"

section.)

2. Remove the desiccant sealing plate and rebuild it as

outlined under the Removing and Rebuilding the

Desiccant Sealing Plate section of this manual.

3. Remove and retain the spring, spring seat, bolt, and

cartridge shell. Discard the oil separator filter, the two

perforated plates and desiccant material.

FIGURE 10