THE NEW PIPER AIRCRAFT, INC.
PA-32-301FT / 301XTC
MAINTENANCE MANUAL
PAGE 8
Jun 1/03
1J20
20-00-00
8. Support Clamps
Support clamps are used to secure the various lines to the airframe or power plant assemblies. Several
type of support clamps are used for this purpose. The rubber cushioned and plain are the most
commonly used clamps. The rubber cushioned clamp is used to secure lines subject to vibration; the
cushioning prevents chafing of the tubing. The plain clamp is used to secure lines in areas not subject to
vibration.
A teflon cushioned clamp is used in areas where the deteriorating effects of hydraulic fluid or fuel is
expected, however, because it is less resilient, it does not provide as good a vibration damping effect as
other cushion materials.
Use bonded clamps to secure metal hydraulic, fuel and oil lines in place. Unbonded clamps should be
used only for securing wiring. Remove any paint or anodizing from the portion of the tube at the bonding
clap location. Make certain that clamps are of the correct size. Clamps or supporting clips smaller than
the outside diameter of the hose may restrict the flow of fluid through the hose.
All plumbing lines must be secured at specified intervals. The maximum distance between supports for
rigid fluid tubing is shown in Chart 2.
CHART 2. MAXIMUM DISTANCE BETWEEN SUPPORTS FOR FLUID TUBING
Distance Between Supports (IN.)
Tube O.D. (IN.) Aluminum Alloy Steel
1/8 9-1/2 11-1/2
3/16 12 14
1/4 13-1/2 16
5/16 15 18
3/8 16-1/2 20
1/2 19 23
5/8 22 25-1/2
3/4 24 27-1/2
1 26-1/2 30
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