32-00-00 Page 32-8 Revised: December 6, 2002
2G8
THE NEW PIPER AIRCRAFT, INC.
PA-44-180
AIRPLANE MAINTENANCE MANUAL
CHART 3201. TROUBLESHOOTING (LANDING GEAR) (Sheet 2 of 5)
Trouble Cause Remedy
Red gear unsafe light out Lamp burned out. Replace lamp.
and one Green gear down
light out though gear is
down and locked.
Gear down limit switch Replace switch. failed.
Light circuit wire broken. Check wiring.
— Note — Ascertain navigation lights are off (daytime).
Red gear unsafe light and Indicator lights circuit Reset circuit breaker and an green lights out. breaker open. determine cause for open circuit breaker.
Light circuit wire broken. Check wiring.
— Note —
Ascertain navigation lights are off (daytime).
Red gear unsafe light and Landing gear selector Reset circuit breaker and
horn fail to operate when circuit breaker open. determine cause for open
throttle is near closed and circuit breaker.
landing gear is retracted.
Micro switch “A” at throttle Adjust micro switch “A.”
out of adjustment.
Micro switch “A” failed. Replace switch.
Warning horn and light Check wiring.
circuit wire broken.
Diode in circuit between Replace diode.
throttle switch “A” and
light/ horn open.
— Note —
When replacing diode connect banded end (cathode) to terminal ends of wires G2Q and G2K on mounting block.
Red gear unsafe light and Gear selector handle in up Place handle in down
horn fail to stop when position. position.
throttle is closed and gear
has extended. (Gear ex-
tended through the use of
the free fall lever)
32-00-00 Page 32-9 Revised: December 6, 2002
THE NEW PIPER AIRCRAFT, INC.
PA-44-180
AIRPLANE MAINTENANCE MANUAL
CHART 3201. TROUBLESHOOTING (LANDING GEAR) (Sheet 3 of 5)
Trouble Cause Remedy
Red gear unsafe light and Warning light and horn Check wiring.
horn fail to operate when circuit wire broken.
selector switch is moved
to up position with gear
extended and throttle not
full forward.
Above condition on Defective safety (squat) Replace switch. ground. switch.
Above condition in the air. Pressure switch open. Replace switch.
Red gear unsafe light and Throttle micro switch “B” Adjust switch.
horn fail to shut off at full out of adjustment.
throttle. Gear selector at
up position and gear
extended.
Throttle micro switch “B” Replace switch. failed.
Hydraulic pump shuts off, Gear not fully retracted. Determine cause and
but red gear unsafe light remedy.
remains on.
Green gear down lights Failed instrument panel Replace switch. dim though position light light control switch. (Lights switch is off, and gear is grounding through dimming down and locked. resistor instead of instrument
panel light control.)
Green gear down light Gear down limit switch Replace switch.
fails to go out with gear failed.
in transit or retracted.
Green gear down lights Green light ground Replace resistor.
will go out and not dim dimming resistor open.
when position light switch
is turned on though gear
is down and locked.
Green gear down lights Micro switch out of Adjust micro switch.
blink momentarily before adjustment.
the down lock is engaged
on roller.
32-00-00 Page 32-10 Revised: December 6, 2002
2G10
THE NEW PIPER AIRCRAFT, INC.
PA-44-180
AIRPLANE MAINTENANCE MANUAL
CHART 3201. TROUBLESHOOTING (LANDING GEAR) (Sheet 4 of 5)
Trouble Cause Remedy
Nose landing gear Internal wear in shimmy Replace shimmy dampener.
shimmies during fast dampener.
taxi, takeoff or landing. Shimmy dampener or Replace necessary parts bracket loose at mounting. and bolts.
Tire out of balance. Check balance and replace tire if necessary.
Worn or loose wheel Replace and/or adjust bearings. wheel bearings.
Worn torque link bolts Replace bolts and/or and/ or bushings. bushings.
Excessive or uneven wear Incorrect operating pressure. Inflate tire to correct on nose tire. pressure.
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