TM-9-2350-311-20-2
HOWITZER, MEDIUM, SELF-PROPELLED, 155MM; M109A2, M109A3, M109A4 AND M109A5
TECHNICAL MANUAL; UNIT MAINTENANCE MANUAL FOR CAB, ARMAMENT, SIGHTING AND FIRE CONTROL, ELEVATING AND TRAVERSING SYSTEMS AND ASSOCIATED COMPONENTS
DECEMBER 1993
TM-9-2350-311-20-2 - Page 69 of 828
TM 9–2350–311–20–2
2–8
Change 1
2–4
SERVICE UPON RECEIPT OF MATERIAL — CONTINUED
Service Upon Receipt Checklist – M109 Howitzer Series Cab — Continued
LOCATION
ITEM
ACTION
REMARKS/REFERENCES
Cab – cont. 12. Basic Issue Items
Uncrate and install or stow.
TM 9–2350–311–10
(Stowed Items)
WARNING
The M140 alinement device is radioactively illuminated. Check for loss of luminescence, break-
age, damage, or defects. If present, follow the procedures on page b.
The M1A1 collimator is radioactively illuminated. Check for presence of illumination and damage.
If discovered broken, damaged, or defective, follow the procedures on page b.
13. M140 Alinement Device
Check for evidence of moisture;
TM 750–116
purge and charge if required.
Check for illumination.
TM 9–2350–311–10
14. M1A1 Collimator
Check for evidence of moisture;
TM 750–116
purge and charge if required.
Check for illumination.
TM 9–2350–311–10
2–4.4
Processing Unpacked Equipment
a.
Install fire control and sighting equipment. No cleaning is required.
b.
Clean all other tools and equipment.
c.
Removal, Cleaning, and Installation of Rack Springs
WARNING
Remove breechblock operating rack springs only when breechblock is in closed position. Springs
are under heavy pressure and could cause injury to personnel. Under no circumstances will re-
moval of springs be attempted with breechblock open.
1
Removal of rack springs.
(a)
Push in plunger (1) with punch (SC 5180–95–CL–A12). Slide rack plate (2) rearward (toward bustle)
until it disengages from plunger (1).
(b)
With breechblock closed, drive rack plate (2) rearward. Stop plate (3) and rack springs (4) will now pop
out. Use clean rag (item 25, Appx D) to catch stop plate and rack springs.
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