Piper SARATOGA PA-32-301 Maintenance Manual page 380

PIPER AIRCRAFT
PA-32-301/301T
MAINTENANCE MANUAL
SWAGELOC FITTING INSTALLATIONS. (Refer to Figure 35-4.)
- NOTE -
The high pressure line fitting at the regulator should be tightened
until it bottoms. Make sure to use teflon tape on all male pipe
threads.
1. For swageloc fittings not preswaged or for in-aircraft installation, proceed as follows:
A. Turn the fitting nut onto the fitting finger tight, and insert the tube until it bottoms firmly on the
shoulder in the fitting.
B. Tighten the nut with a wrench until the tube will not turn by hand.
C. Mark the nut at the six o'clock position.
D. Hold the fitting body steady with a backup wrench and tighten as follows:
(1) On tubing with a diameter bigger than 3/ 16 inch, tighten 1 1/4 turns (to the nine o'clock
position).
(2) On tubing of 1 16, 1 8, and 3 16 inch diameter tighten only 3,4 turn.
E. If nut and tube must be disconnected from the fitting, reconnect by seating the tube on the
shoulder of the fitting and tightening the nut finger tight. Follow up by tightening the nut with a wrench. one
quarter turn (if absolutely necessary the original 1 1,4 or 3/4 tight position) and then snug with wrench.
2. Preswaged swageloc fittings are fabricated and installed as follows:
A. Assemble the nut and ferrules finger tight on the preswaging tool and insert the tube until it
firmly bottoms on the shoulder in the tool. The preswaging tool can be attained from Crawford Fitting
Company. refer to List of Consumable Materials in Chapter 91.
B. Tighten the nut on the fitting just enough that the tube within the fitting will not turn by hand.
C. With a wrench tighten the nut as follows:
(1) On tubing with diameters over 3 16 inch, tighten 1 1/4 turns.
(2) On tubing with 1;16, 1;8. or 3/ 16 inch diameter tighten 3,/4 of a turn.
D. Unscrew the nut to release the ferrule-tube assembly from the tool.
E. The assembly is installed on the fitting as follows:
(1) Slide tube in fitting until it bottoms, turn nut to finger tight position, and tighten one
quarter turn with wrench.
(2) Snug slightly with wrench.
APPLICATION OF TEFLON TAPE THREAD SEALANT.
All male pipe (tapered) threads of the oxygen system should be sealed with 3M No. 48 teflon tape. Teflon
tape should not be used on straight threads. No other lubricants shall be used in place of the teflon or on any
other threads.
1. Wrap tape on the threads, starting with those farthest from the opening, in the direction of the thread
spiral. Circle the threads, making sure that each side of the tape has a slight overlap.
2. Wrap the tape such that it does not extend beyond the last thread on the fitting at the opening. The
tape should then be pulled till it separates. Do not cut tape, it will not stick properly.
35-10-05
Page 35-08
2E15
Revised: August 23, 1982