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TM 9-2320-356-BD
14-15.
HIGH-PRESSURE TUBE SUBSTITUTION AND ISOLATION (M543, M816, AND M936)
General Information:
High-pressure tube damage on a wrecker can be repaired by substituting and
isolating another tube from the wrecker’s hydraulic system.
If a vital function of
the crane is inoperative due to a damaged high-pressure tube, refer to table 14-1
for the size, length,
location, and function of other tubes of approximately the
same length.
Refer to the figure in paragraph 14-6 that will show physical
location and hose numbers that interchange with those in table 14-2.
Limitations:
o Loss of a hydraulic function
o Extended recovery time
Personnel/Time Required:
o 1 soldier
o 15 to 60 minutes
Material/Tools:
o Adjustable wrench
Procedural Steps:
1.
Locate and remove damaged high-pressure tube.
2.
Refer to table 14-1 and identify the tube.
3.
Select a function that will not be needed or whose loss will not affect the
mission.
Make sure that the substitute tube is longer than the damaged tube.
Remove the tube.
4.
Isolate the hydraulic function that is not needed and remove the handle from
the control valve.
CAUTION
Do not kink tubing when bending it. A kink will
weaken the tubing.
5.
Bend the substitute tube in the appropriate places to fit and install the tube.
6.
Record the BDAR action taken.
When the mission is completed, as soon as
practicable, repair using standard maintenance procedures.
14-19
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