Piper Navajo Chieftain PA-31-350 Service Manual page 256

NAVAJO CHIEFTAIN SERVICE MANUAL
TABLE V-III. TROUBLESHOOTING CHART (SURFACE CONTROLS) (cont.)
Trouble Cause Remedy
AILERON TRIM CONTROL SYSTEM (cont.)
Trim control wheel
moves with excessive
resistance.
System not lubricated
properly.
Lubricate system.
Cable tension too high.
Pulleys binding or
rubbing.
Cables not in place on
pulleys.
Trim tab hinge binding.
Cables crossed or
routed incorrectly.
Adjust cable tension.
Replace binding pulleys.
Provide clearance be-
tween pulleys and
brackets.
Install cables.
Lubricate hinge. It
necessary, replace.
Check routing of con-
trol cables.
Trim tab fails to
reach full travel.
System incorrectly
rigged.
Check and / or adjust
rigging.
Either or both trim
drums incorrectly
wrapped.
Check and or adjust
rigging.
Trim indicator fails
to indicate correct
trim position.
Trim sender unit not
adjusted properly.
Adjust sender unit.
Low voltage in system.
Check power supply.
SURFACE CONTROLS
Reissued: 9/23/80
1K16