TB-9-1000-234-13 Exercising of M109 Recoil Mechanisms and Equilibrators Download
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TB 9-1000-234-13 2-5 b. Oil Pump M3 (Single or Double Type Recoil Mechanisms). (1) On certain types of replenishers (table 2-2), remove hydraulic fluid from replenisher cylinder. (2) Remove replenisher hose from recoil cylinder or cradle. (3) Install plug or cap to seal replenisher hose hole. (4) Level cannon and remove plug from rear of recoil cylinder. (5) Attach hose from oil pump M3 to recoil cylinder. (6) Mark the cannon tube 6 to 8 inches from gun shield. (7) Using oil as specified in the lubrication order for weapon being exercised, operate the oil pump and hydraulically force the gun 6 to 8 inches out-of-battery, as marked on the gun tube. Table 2-2. Exercising Procedures for Hydrospring Recoil Mechanisms Weapon System Method Paragraph References Inches distance rod to be extended TANK, COMBAT, FULL- TRACKED: 105-mm gun, M48A5 2.1b X 2.2b X 2.2g 6-8 TANK, COMBAT FULL- TRACKED: 120-mm, gun, M1A1 ABRAMS X X X 6-8 TANK, COMBAT FULL- TRACKED: 120-mm, gun, M1A2SEP ABRAMS X X X 6-8 (8) Release valve on oil pump and allow cannon to move back into battery. (9) Repeat operation at least three times to ensure that recoil slide area and seals are lubricated. NOTE Steps 10 and 11 are not required for Abrams tanks. (10) Apply WTR grease as specified in paragraph 1.3e. (11) Remove 2 by 4 and proceed as in step (8) above. (12) Remove plug or cap and attach replenishment hose by one or two threads. (13) Fill replenisher, bleeding out any air in replenisher hose. (14) Tighten replenisher hose and recheck for proper amount of oil as specified in the pertinent technical manual.