Figure 5-9.—Synthetic rubber medium-pressure hose assembly.
PROCEDURES.—When failure occurs in a
flexible hose equipped with swaged end fittings, the
unit is generally replaced without attempting a repair.
The correct length of hose, complete with
factory-installed end fittings, is drawn from supply.
When failures occur in hose assemblies equipped
with reusable style end fittings, the fabrication of the
replacement unit is the function of the intermediate
and depot organization levels. Undamaged end
fittings on the old length of hose maybe removed and
reused; otherwise, new fittings must be drawn from
supply along with a sufficient length of hose.
The following assembly procedures are for
instructional purposes only. When fabricating hose
assemblies, refer to the Aviation Hose and Tube
Manual, NAVAIR 01-1A-20. Hose assembly part
number MS 28741-80164 (fig. 5-9), per MIL-H-8795,
is used here as an example of fabrication procedures.
The first step is to determine the necessary hose
length from table 5-2 and figure 5-10. Wrap the
circumference of the hose with masking or plastic
electrical tape at the cutoff to prevent flare-out of
braid if the hose outer cover is wire braid. Hose with
rubber or fabric outer cover does not require wrapping
Table 5-2.—Hose Cutoff Factor (In Inches)
FITTING
HOSE SIZE (DASH NUMBER AND/OR LETTER)
P/N
-3
-4
-5
-6
-8
-10
-12
-16
-20
-24
-32
MS27616
STRAIGHT
.92
1.02
1.16
FLARED
.70
.74
.77
.81
.93
1.05
1.13
1.30
1.44
1.66
MS28760
.79
.99
1.10
1.19
1.35
1.59
MS18085
.42
.41
.42
.47
.58
.63
.61
.67
.79
.86
MS24587
.60
.60
.70
.77
.94
1.00
1.00
.94
.99
1.09
1.24
MS27404
.46
.55
.68
.73
MS87018
.64
.65
.70
{
.76
.94
.99
1.00
1.16
1.34
1.44
1.62
OR
M83798/1
.74*
.74*
.76*
.84*
97*
1.05*
1.11*
1.34* 1 .54* 1 .70*
NOTES:
Cut-off factor for one fitting.
* Hose fittings manufactured by Stratoflex (98441) have different cut-off factors,
5-12
MS27053
