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 406 of 828
TM 9–2350–311–20–2
7–2
7–1
RAMMER LINES AND FITTINGS
This task covers:
a.
Removal
b.
Installation
INITIAL SETUP
Tools
Artillery and turret mechanic’s tool kit
(SC 5180–95–CL–A12)
Materials/Parts
Cap and plug set (item 7, Appx D)
Lockwashers (6) (item 81, Appx G)
Lockwire (item 33, Appx G)
Plastic bag (item 4, Appx D)
Equipment Condition
Discharge hydraulic pressure (para 6–3)
a.
Removal
WARNING
•
Do not torque hydraulic fittings or perform removal procedures when hydraulic system is pres-
surized. Discharging system pressure before performing any maintenance procedures will
avoid serious injury to personnel.
•
Eye protection will be worn when performing maintenance procedures on all hydraulic compo-
nents to avoid injury to personnel.
CAUTION
•
All hydraulic lines and ports must be capped to prevent contaminants from entering the hydrau-
lic system and causing internal damage to hydraulic components.
•
All serviceable components must be placed in plastic bags to prevent contamination of hydrau-
lic system during installation.
NOTE
•
All hydraulic lines and components must be tagged before removal for identification during in-
stallation.
•
The removal of hydraulic tubes and fittings must be restricted to those items that are to be re-
placed. Therefore, the legends in this chapter are for identification only.
For removal, follow illustration and legend as a guide. Discard all lockwashers and lockwire.
b.
Installation
CAUTION
When installing any hydraulic fitting, tighten fitting to aline with the connecting lines. Repositioning
can loosen threads, cause leaks, and damage preformed packings.
For installation, follow illustration and legend as a guide. After installation, check hydraulic fluid level (para
6–2).
Back to Top
