Piper Navajo Chieftain PA-31-350 Service Manual page 260

NAVAJO CHIEFTAIN SERVICE MANUAL
Trim
reach
TABLE V-llI. TROUBLESHOOTING CHART (SURFACE CONTROLS) (cont.)
Trouble
Cause
Remedy
ELEVATOR TRIM CONTROL SYSTEM (cont.)
tab fails to
System incorrectly
Check and 'or
full travel.
rigged.
rigging.
Either or both trim
Check and or
drums incorrectly
rigging.
wrapped.
indicator fails
Trim sender unit not
Adjust unit.
indicate correct
adjusted properly.
position.
Low voltage in system.
Check power s
indicator fails
Circuit breaker open.
Reset circuit b
adjust
adjust
Trim
to in
trim
supply.
breaker.
Trim
to indicate any move-
ment.
Master switch not on.
Trim indicator defec-
tive.
Trim indicator ground
open.
Trim sender unit de-
fective.
Defective wiring in sys-
tem.
Trim sender unit ground
open.
Turn on master switch.
Replace indicator unit.
Check ground wire.
Replace sender unit.
Check wiring.
Check sender unit
ground.
Trim indicator
pointer moves to
extreme nose down
position.
SURFACE CONTROLS
Reissued: 9/23/80
1K20