TM 1-1520-238-23
7-426
7.113.
HYDRAULIC TUBES AND FITTINGS PERMASWAGE REPAIR continued
7.113.4. Select Required Tool Kit
Tube Size
Tube Repair Kit
3/16, 1/4,
5/16, 3/8
D12102C-01-01
1/2, 5/8,
3/4
D12102C-06-06
1, 1-1/4,
1-1/2
D12102C-09-04
7.113.5. Determine Correct Tube and Fitting Clearances
a. Minimum straight tube lengths for swaging:
Size
Length
3/16
0.600
1/4
0.740
5/16
0.780
3/8
0.816
1/2
1.318
5/8
1.358
3/4
1.428
1
1.573
1-1/4
1.675
1-1/2
1.800
b. Minimum bend radius for tubing is 30 times
diameter of tube.
c. Refer to TM 1-1520-238-23P for replacement
unions and fittings.
d. Use table of dimensions to determine if repair
can be made on aircraft.
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M04-2844-2
L
R (RADIUS) =
30 (DIAMETER
OF TUBE)