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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). 
WARNING 
Make sure all air lines and fittings are clear of debris. Make sure exce ss pipe sealant compound 
does not enter air lines or fittings. Failure to do so could result in equipment failure and/or injury 
to personnel. 
Sealant compounds can bum easily, can give off harmful vapors, and are harmful to skin and 
clothing To avoid injury or death, keep away from open fire and use in well-ventilated area. If 
sealant compound gets on skin or clothing, wash immediately with soap and water. 
CAUTION 
Route air tube 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 to component. 
2. 
COAT THREADS OF FITTING (2) WITH PIPE SEALANT COMPOUND AND INSTALL AIR TUBE (3) IN FITTING 
(2). 
3. 
INSTALL NUT (1) ON FITTING (2). 
Nylon Tube Bend Radius Table 
Outside 
Minimum Bend 
Diameter 
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: 
Perform standard leak test (page 2-24). 
Change 3 4-516.3 
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