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![]() TM 9-2320-363-20-2 
INSTALLATION 
NOTE 
Procedure is the same for all air tubes. 
1. 
INSTALL NUT (1), FERRULE (5), AND INSERT (4) ON AIR TUBE (3) 
CAUTION 
Route air tubes so that tube does not bend to radius smaller than allowed in Nylon 
Tube Bend Radius Table. If bent smaller than allowed, tube may kink causing loss 
of air pressure. 
NOTE 
Apply a thin coat of thread sealing compound on male threads of fittings 
2. 
INSTALL NUT (1) ON FITTING (2). 
Nylon Tube Bend Radius Table 
Outside Diameter 
Minimum Bend Radius 
in. 
(mm) 
in. 
(mm) 
0.25 
(6.40) 
1.0 
(25.0) 
0.38 
(9.50) 
1.5 
(38 0) 
0.50 
(13 00) 
2.0 
(51.0) 
0.63 
(17.00) 
2.5 
(64.0) 
0.75 
(19.00) 
3.0 
(76.0) 
NOTE 
Follow-on Maintenance: 
Start vehicle and perform standard leak test (page 2-24). 
Change 3 4-604.31/(4-604.32 Blank) 
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