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 98 of 828
TM 9–2350–311–20–2
2–37
2–14 GENERAL REPAIR PRACTICES
General Procedures
CAUTION
Do not spot paint rammer valve plunger or roller as it will impede proper operation.
1
Damaged or worn paint should be touched up. In painting the howitzer, follow procedures outlined in
TM 43–0139, Painting Instructions for Army Materiel.
2
If a screw, bolt, nut, or other fastener is surrounded by chipped or damaged paint or by rust, check to see
whether the fastener is loose. Tighten the fastener.
3
Do not paint electrical harnesses, wiring, hoses, or finished machine parts.
4
Refer to para 1–14.5 for location of stencil markings on vehicle.
NOTE
When filing aluminum, clean file often with steel file brush.
5
Remove burrs, scratches, or raised metal. Use fine file (SC 5180–95–CL–A12), stone, or crocus cloth (item
11, Appx D) dipped in oil. Replace parts which have cracks or excessive burrs.
6
Code and tag electrical parts before removing.
7
Before testing circuits for continuity and for voltage across components, make sure connectors are tight and
solder joints are securely joined.
8
See para 8–1 of this manual for replacement of typical electrical components such as male and female con-
nectors, plugs, and receptacles.
2–15 WELDING
Refer to TM 9–237, Welding Theory and Application Operator’s Manual, for welding instructions and welding materiels.
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