TM 5-3810-306-20
AIR DRYER DESICCANT CARTRIDGE REPLACEMENT
TOOLS:
General mechanic’s tool kit: automotive (5180-00-177-7033)
SUPPLIES:
Desiccant Cartridge (Item 26, Appendix C)
EQUIPMENT CONDITIONS: Crane wheels are chocked.
Air system is purged. (Refer to page 11-2.)
Disconnect ground cable at shunt. (Refer to page 8-109.)
REMOVAL:
1.
REMOVE DESICCANT CARTRIDGE ASSEMBLY
(9) AND DESICCANT PLATE ASSEMBLY (6).
a. Disconnect the heater lead.
b. Disconnect air control line from purge valve on
end cover.
c. Loosen three capscrews (1) on end cover (2)
and turn retaining clamps (3) aside (capscrews
may be left finger tight.)
d. Locate notch in dryer shell (4). While pushing
end cover (2) up into dryer, insert blade of
screwdriver in notch and slowly pry out retainer
ring (5). Remove end cover assembly and set it
aside temporarily.
NOTE
Be certain desiccant plate assembly
(6)
comes
out
with
cartridge
assembly (9).
e. Loosen bolt (16) and remove cartridge assembly
(9) and desiccant plate assembly (6).
2.
DISASSEMBLE DESICCANT PLATE ASSEMBLY
(6) AND DESICCANT CARTRIDGE ASSEMBLY
(9).
NOTE
It is recommended that all non-
metallic parts be replaced when the
sealing plate is removed.
NOTE
The plate is spring loaded; however,
the spring load is completely relieved
when the lock nut (7) is removed.
a. Carefully remove locknut (7) on top of desiccant
plate assembly (6).
NOTE
If the desiccant cartridge assembly is
to be replaced as an assembly rather
than
be
rebuilt,
the
cartridge
assembly may be discarded after the
desiccant plate assembly is removed.
b. Separate desiccant plate assembly (6) from
desiccant cartridge assembly (9).
c. Remove two preformed packings (10 and 11)
from desiccant plate (8) and discard them.
11-14
