TM-9-2350-311-20-2 Maintenance Manual Volume 2 for M109 Cab Download
Page 368 of 828
TM 9–2350–311–20–2 6–46 Change 2 6–18 HYGROSCOPIC BREATHER AND AIR LINE FILTER This task covers: a. Removal b. Installation c. Service INITIAL SETUP Applicable Configuration M109A4/M109A5 howitzers Tools Artillery and turret mechanic’s tool kit (SC 5180–95–CL–A12) Utility pail (item 7, Appx H) Materials/Parts Caps and plugs (item 7, Appx D) Dessicant (item 11.1, Appx D) Locknut (item 97, Appx G) Lockwashers (2) (item 80, Appx G) Preformed packing (item 45, Appx G) Wiping rag (item 25, Appx D) Equipment Condition Discharge hydraulic pressure (para 6–3) a. Removal NOTE • There are two possible hygroscopic breather configurations. Both, however are removed and installed the same way. • Dispose of hydraulic fluid in accordance with local regulations. • All hydraulic lines and parts must be capped to prevent contaminants from entering the hydrau- lic system and causing internal damage to hydraulic components. 1 Disconnect adapter (1) with attaching tube (2) from air line filter (3). 2 Disconnect air line filter (3) and nipple (4) from fitting (5). 3 Unscrew and remove hygroscopic breather (6), or hygroscopic breather (6.1), fitting (5), locknut (7), and preformed packing (8) from mounting bracket (9). Discard preformed packing and locknut. 4 If mounting bracket (9) is damaged, remove two machine bolts (10), two lockwashers (11), and mounting bracket for replacement. Discard lockwashers. b. Installation 1 If mounting bracket (9) was removed, secure to cab wall using two new lockwashers (11) and two machine bolts (10). 2 Secure fitting (5) on mounting bracket (9) using new locknut (7). CAUTION If new air line filter is being installed, remove foam from inside or hydraulic fluid will collect in air line filter causing damage to equipment.