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 724 of 775

TM 9-2350-311-10

G-3

LUBRICATION INSTRUCTIONS - CONTINUED

14.1.

CHECK BALLS AND METERING HOLES (C) (11580776) -CONTINUED

d.

Slide main reservoir (48.8) forward on cannon tube (48.7) separating it from the preservoir (48.9).

NOTE

Use rag to catch nine check balls when sliding valve ring forward.

e.

Slide valve ring (48.10) forward and remove nine check balls (48.11). The balls should fall out.

f.

Slide preservoir (48.9) forward on cannon tube (48.7).

g.

Thoroughly clean evacuator ball valves (48.11), 10 evacuator orifices (48.12), and tube threads (48.13) with CLP

(item 8, Appx D) using the bore evacuator brush. Clean three metering holes (48.14) with CLP using brush.

h.

Apply a light coat of GMD (item 19, Appx D) or GGP (item 18, Appx D) to check balls (48.11), valve ring (48.10) and

unpainted cannon tube (48.7) surface before assembling. For nonfiring periods, bore evacuator and check balls

are cleaned and lubricated monthly.

G-18.2

Change 2