TM-9-2350-358-BD
HOWITZER, MEDIUM, SELF-PROPELLED, 155MM; M109A6
TECHNICAL MANUAL; OPERATOR’S, UNIT, AND DIRECT SUPPORT SUPPORT MAINTENANCE
MARCH 1994
TM-9-2350-358-BD - Page 230 of 343
TM 9-2350-358-BD
11-11. HYDRAULIC TUBE AND HOSE REPAIR (HIGH PRESSURE)- CONTINUED
7.
Lubricate nipple threads and inside of hose liberally using a heavy lubricating oil.
8.
Screw nipple clockwise into socket and hose.
Leave 1/32 to 1/16-inch clearance between nipple and socket.
9.
Clean and inspect assemblies before installation.
10
Install fabricated hose.
11.
Fill and bleed hydraulic system.
12.
Record the BDAR action taken.
When mission is complete, as soon as practical, repair the equipment/system
using standard maintenance procedures.
Option 2:
Fabricate high pressure metal tubing using ORS fittings (wedge type).
Limitations:
None
Personnel/Time Required:
•
1 soldier
•
0.5-2.0 hours
Materials/Tools:
•
Nipple, tube, straight, 1/4, 3/8, 1/2, 5/8, 3/4-inch determined by size (item 40, 41, 42, 43, 44, Appendix C)
•
Packing, preformed, kit (item 45, Appendix C)
•
Tube, fitting kit 1/4, 3/8, 1/2, 5/8, 3/4-inch determined by size (item 69, 70, 71, 72, 73, Appendix C)
•
Hydraulic fluid (item 36, Appendix C)
•
High pressure metal tubing (scavenge from available source)
•
Tube cutter
References:
•
LO 9-2350-314-12
•
TM 9-2350-314-20-2-2
Procedural Steps:
1.
Measure the length of the tube assembly from the flat face of the ORS adapter in one port to the face of the ORS
adapter in the opposite port.
The length of the tube should then be adjusted to account for the shoulder thickness
of the sleeve.
It is imperative that the routing leave a length of unbent tubing to fully enter the ORS fitting.
This
straight length must be free from surface defects, thin-out distortion, and ovality.
Refer to para 11-9 metal tube
bending.
11-12
Back to Top
