TM 5-4220-211-12&P
(3)
(4)
Unscrew purifier chamber (2, Fig. D-13) from bottom plug.
(5)
Remove and discard old purifier cartridge (7, Fig. D-13).
damage, replace if necessary.
NOTE
Back-up ring is installed at the top of the "O"-ring groove with the flat face of the back-up
ring against the top of the "O"-ring groove.
(6.1) Using a clean, lint free cloth, wipe down the interior surfaces of the following: cylinder (2, Fig. D-13), top
(7) Unwrap new purifier cartridge. Using a clean, lint free cloth, install the new purifier cartridge into the
bottom plug. Make sure the cartridge seats down through "O"-ring (6, Fig. D-13).
CAUTION
Do not use any petroleum lubricants. Do not touch the surface of the cartridge with bare
hands.
(8)
Apply a thin film of silicone grease to the "O"-rings, back-up rings, bottom and top plug threads.
(9) Screw chamber back down on bottom plug until chamber comes down flush with bottom plug. Do not
overtighten.
(10) Insert the top plug (1, Fig. D-13) into the top of the purifier chamber (2, Fig. D-13). Screw the top plug
down until the top of the plug is flush with the end of the purifier chamber. Do not overtighten.
(11) Make appropriate entry into compressor log book.
e.
Change Crankcase Oil. Change the lubricating oil in the compressor crankcase as follows:
(1)
The compressor should be run and shut down after normal operating temperature has been reached.
(2)
Position a drain pan under the compressor drain plug (20, Fig. 1-3).
(3)
Remove drain plug (20, Fig. 1-3). Allow old oil to drain from the crankcase into the pan.
(4)
(5)
Fill crankcase with lubricating oil. Ref. Par. 2-lf Table 2-1.
NOTE
Change compressor oil after the first 20 hours of operation and every 100 hours, or 6
months, thereafter.
Change 3 4-3