BENDIX SD-08-2403 manual End Cover Removal

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End Cover Removal

1.Loosen the three cap screws on the end cover and turn the retaining clamps aside (cap screws may be left finger tight).

2.Locate the notch in the air dryer shell. While pushing the end cover up into the dryer, insert the blade of a screwdriver in the notch and slowly pry out the retaining ring. If the cartridge bolt has loosened the cartridge spring may exert a force on the end cover retaining ring making removal of the retaining ring and end cover difficult. This spring force will prohibit the end cover moving up into the dryer shell when pushed up. Warning: This same force can also cause the end cover to come out of the air dryer shell unexpectedly during the removal process. Exercise extreme caution to prevent bodily injury.

3.Do not stand or lay directly under the end cover while servicing. Assure adequate clearance between the end cover and other surfaces to prevent hand injury if the end cover dislodges rapidly during removal. NOTE: BE CERTAIN THE DESICCANT SEALING PLATE ASSEMBLY COMES OUT WITH THE CARTRIDGE.

CAUTION: Before attempting to remove the desiccant sealing plate, measure the cartridge bolt from the top of the desiccant plate lock nut to the end of the bolt threads. If that measurement is approximately 3-3/16 inches, proceed with the disassembly.

If the bolt measures approximately 1-9/16 inches, disassemble using CAUTION. Approximately 75 pounds of spring force will remain against the desiccant plate when the lock nut reaches the end of the bolt thread and is removed.

REMOVING AND REBUILDING THE AD-1AND AD-2AIR DRYER DESICCANT SEALING PLATE

Before the desiccant cartridge can be replaced or rebuilt the desiccant sealing plate must be removed. It is recommended that all non-metallic parts be replaced when

the plate is removed. In the past, three methods have been employed, to secure the desiccant sealing plate to the desiccant cartridge: a Tru Arc retaining ring, two special thin nuts, and the latest method, a single hex lock nut. Removing the securing device will permit the desiccant plate to be separated from the desiccant cartridge. After removing the desiccant cartridge:

1.Remove the two o-rings from the desiccant plate and discard them.

2.Remove the ball check valve retaining clip and remove and discard the rubber ball valve.

3.Clean the desiccant plate thoroughly using a quality commercial solvent, making sure the purge orifice and check valve seat are clean.

4.Install a new ball check valve and replace the retaining clip and screw (Figure 5).

5.Thoroughly lubricate the two new o-rings and install them in their respective grooves in the purge plate (Figure 6).

6.Set the desiccant sealing plate aside for reinstallation on the desiccant cartridge.

FIGURE 7 - REPLACEMENT DESICCANT CARTRIDGE

FIGURE 6 - DESICCANT SEALING PLATE

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Contents SD-08-2403 Sectional Views Operation Preventive Maintenance and Checking ServiceabilityPage Electric Power to the Dryer Replacing or Rebuilding the AD-1AND AD-2AIR Dryer ReassemblyEnd Cover Removal Disassembly of Desiccant Cartridge Reinstalling the Desiccant Cartridge AD-1AND AD-2AIR DryerRebuilding the Desiccant Cartridge Page Assembly Disassembly Rebuilding the AD-1AIR Dryer END Cover AssemblyRebuilding the AD-2AIR Dryer END Cover AssemblyCheck to be certain a film of barium base grease is Rebuilding the AD-2AIR Dryer Outlet Port Check ValveMaintenance KIT for the AIR Dryer Installation of AD-1AND AD-2AIR DryerTypical Installation for the AD-1AIR Dryer AD-2AIR Dryer Troubleshooting Chart Symptom