TM 1-1520-240-BD
7.20. OPTION. Substitute with High Pressure Hose
(damage to section of tubing with bends).
a.
Materials/Tools Required:
Hydraulic Hose Assembly Complete with End
Fittings
2 MS Unions
2 Splice Adapter Assembly
2 Repair Fittings
Tubing Cutter
Knife or File
Heat Gun
b.
procedural Steps:
(1)
Cut and remove damaged section of
tubing, Figure 7-9. Tube ends must be square.
(2)
Clean ends of undamaged tubing with
knife or file.
(3)
Install splice adapter assembly using
repair fittings as shown in Figure 7-10. Procedure for
connecting the splice adapter to the undamaged end is
similar to OPTION 1 (paragraph 7-19), except the tube
side of the splice adapter is the splice tube.
(4)
Connect MS unions to both splice
adapters, and complete the repair by connecting a
hydraulic hose assembly from one union to the other
(Figure 7-11). If the damaged length of tubing is long
and more than one hose assembly is required, hose
assemblies may be spliced together with unions. No
harm will be done if the replace hose is too long.
(5)
Clamp
at
convenient
intervals,
not
exceeding 2 feet, to hard supports to secure the line.
(6)
Record BDAR action taken.
Figure 7-9. Damaged Tube Section - Complex Bends
7-10
