TM-9-2350-311-10

HOWITZER, MEDIUM, SELF-PROPELLED, 155MM; M109A2, M109A3, M109A4 AND M109A5

TECHNICAL MANUAL; OPERATOR’S MANUAL

NOVEMBER 1994

TM-9-2350-311-10 - Page 739 of 775

TM 9-2350-311-10

G-3

LUBRICATION INSTRUCTIONS - CONTINUED

41. VARIABLE RECOIL ASSEMBLY (C)

For sustained operation at 0° F (-18° C) temperature or below, change grease to GAA (item 17,

Appx D). Do not mix greases.

a.

Remove six machine screws (86), six lockwashers (87), and six flat washers (88) from variable recoil access cover

(89).

b.

Remove four machine bolts (90), four lockwashers (91), and four flat washers (92) from dust shield (93).

c.

Elevate cannon tube and check operation of variable recoil assembly components.

d.

Check for dirt/water accumulation and rust on sector gears (94) and torque key groove (95).

NOTE

M109A2/M109A3/M109A4 M185 cannon assembly has one torque key groove. M109A5 M284

cannon assembly has two torque key grooves.

e.

Lubricate sector gears (94) and torque key groove (95) with GMD or GGP (Table G-1) and replace dust shield (93)

and variable recoil cover (89).

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