TM-9-2350-311-20-2 Maintenance Manual Volume 2 for M109 Cab Download
Page 85 of 828
TM 9–2350–311–20–2 2–24 Table 2-2. PREVENTIVE MAINTENANCE CHECKS AND SERVICES FOR M109 SELF- PROPELLED HOWITZER – CONTINUED Location Item No. Not Fully Mission Capable if: Procedure Item to Check/Service Interval 4 Quarterly Cab Race Ring Check the cab bearing/race ring assembly as follows: a. Remove lockwire (1), three cap screws (2), and cover (3). Discard lockwire. b. Manually traverse cab and look through access hole to see that race has enough lubrication. If race surfaces, helical compression springs, race ring spacers, and bearing balls are lightly coated with grease, you are okay. Reinstall ball turret cover. c. If lubrication is needed, remove one if the three plugs (4) around inner race. Install lubrication fittings and apply GAA lightly through lubrication fittings while manually traversing cab through two complete 6400 mil cycles to coat bearing ball surface of race. Do not over lubricate. Remove lubrication fit- ting, reinstall plugs (4), ball turret cover (3), cap screws (2), and new lockwire (1). 1 2 3 4