Landing Gear Warning Switch Adjustment - Piper PA-24 Comanche Service Manual

PIPER COMANCHE SERVICE MANUAL
2.
Inst~
insulator a.etuator and
micro
switch on quadraJlt plate and secure with
screws.
lockwuhcn and nuts.
3. Adjust switch per puqnpb 6-63.
4. Innall cover on quadrant and secure with
screws.
6-63. AdjumDCDt Of
LaDdinr
Gar W.miq Switch.
a. Adjust the Iatldin,
(CU'
wamint micro switch located on the throttle shaft forwvd of the
instrument panel
by
usinJ
the foUowm, procedure:
b. .When properly adjuRed the
laDdinl
JUt
wU'Dint
hom shouJd operate when the power is reduced
below 10 to 12 inches of manifold prcuurc with the airpJme in 1lOrma.l descent and thc
Jmdina
pit
retracted.
1. Stut and run up the eDJi.ne with the propeUer set: for
hips RPM.
Reurd the throttle until
approximately" inches of manifold pressure on the
PA-2~laO. PA·2~2'0
and PA·2.... 2 60 and 5 inches of
manifold pressure on the PA·24-400 is indicated above the desired
iDflicbt pftlSlUft.
2. Mark the throttle shaft in some manner
to
that it can be reaamcd to the proper manifold
pressure
SCttinJ
indicated dunn, the run-up
liter
the cqiDe bu been shUt down.
3. Place the airplane on jacks and retract the
pu.
Reurd the tbrotd.c
to
the location which
pvc
the desired manifold pressure indicuion.
4. Adjust switch on airplanes with Serial Nos. 2....1 to 24-4782 ind•• 24-4784 to 24-4803 incl.
and PA·24-400 by the followilll procedure,
(a) With the bartery master switch on.lOoten the mountinJ screws or
set
screws
on the micro
switch mountiDI brackct and move the bracket fore aDd aft until the wanUna hom
StartS
to operate.
Tighten the mountinc screws to secure the switcb auanbly. Tbc switch may &lIo be
adjusced up or down to
allow proper clcan.nce of the micro switch button on the throttle shaft.
$.
Adjust switch on airplanes with Serial
NOl.
24004783. 24-4104 ud up. by the following
procedure,
(a) Remove the left aim cover from the throttle quadrant by removing attaching screws.
(b) With the battery master switch on, loosen thc
micro
switch mounn. .
screws
and move
switch towvd actuator roller. on the throttle levu. until
wamint
hom
startI
to operate. Tighten mounting
screws securing switch to quadrant plue and install
cover.
6.
Operate the throttle
to
uemain
that the hom operates at the mark. and with warning hom
operating, lower the
,ear
to insure that the hom c:c:ucs to operate when the
par
is down and locked.
7.
Remove the airplane from the jacks and fliJht tnt
to
iNure operation of the warning horn
when the geu is up and power is reduced below the desired
muifold pressure.
If
the hom
fa.ils
to operate
at the required setting.
mark
the throttle shaft at the
desired manifold
prature and reset micro wamiDJ
switch.
LANDING GEAR AND BRAKE SYSTEM
ISSUED: 8/18/72
lK4
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