Bell OH-58A Technical Manual page 163

3. Record BDAR action taken. When
mission is complete, as soon as
practical, repair the equipment/system
using standard maintenance procedures.
Replace Hose Section with MS
OPTION 2:
Fittings (no BDAR hose assemblies
available). For Teflon and rubber hose.
LIMITATIONS: None.
PERSONNEL/TIME REQUIRED:
1 Soldier
30 Minutes
MATERIALS/TOOLS REQUIRED:
Replacement Section of Hose or Tube
(if needed)
Masking Tape (item 52, Appx C)
Fine Toothed Hacksaw
MS Fittings (socket, sleeve, and
female fitting, 4 ea.)
MS Union (2 ea.)
PROCEDURAL STEPS:
Cut out damaged hose section. Wrap
1.
masking tape (or other available tape)
around hose over the areas where cuts
are to be made to contain the braided
wires from unraveling.
where the cuts are to be made. Hold in
a vice and cut with a fine-toothed
Take care to make square cut.
hacksaw.
Do not remove tape.
NOTE
If the damage is small, the
length of a single union may be
sufficient to provide a repair.
However, if the damage is longer,
a replacement section will be
required.
2. Obtain the proper sized MS fitting
and unions.
3. Slip the MS socket over one of the
undamaged ends of the hose, Figure 9-12.
Use care not to unravel the wire braids.
wire braid cover and the inner rubber
hose.
the sleeve is even with the end of the
rubber hose.
a square tool or a wooden plug so that
edge is smooth and flared to facilitate
insertion of the nipple of the MS female
fitting.
as far as it will go and hold in vise.
Insert nipple of MS female fitting into
rubber inner tube, Figure 9-13. Force
all the way until threads in socket and
female fitting together and tighten
until the gap between the edge of the
socket and the base of the female
fitting is approximately 0-1/32 inch for
rubber and 0.025 to 0.045 inch for
Teflon.
hose in the same manner.
necessary, connect the MS fittings on
the undamaged ends with an MS union,
Mark on tape Figure 9-14.
obtain replacement section and cut to
desired length.
procedure for cutting hose. No harm
will be done if replacement section is
mission is complete, as soon as
practical, repair the equipment/system
4. Insert the MS sleeve between the
Force onto hose until the edge of
Reem inside end of Teflon hose with
5.
6. Slide the MS socket over end of hose
7. Prepare the other damaged end of the
8. If no replacement section is
9. If a replacement section is needed,
Refer to step 1 for
too long. Attach MS fittings to both
sides of the replacement section.
10. Place replacement section between
the undamaged ends and connect the MS
fittings on the undamaged ends to the
fittings on the replacement section
using MS unions.
Record BDAR action taken. When
11.
using standard maintenance procedures.
TM 55-1520-228-BD
HYDRAULIC
9-11