Landing Gear Safety Switch Adjustment; Gear Down Limit Switch Adjustment; Gear Retraction Transmission Assembly Adjustment - Piper PA-24 Comanche Service Manual

PIPER COMANCHE SERVICE MANUAL
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cs.S2. Adjultmet1t Of
1.aDdint
c;c. Safety
Switch. _
a. The Iandi", pr safety switch iocated on the left main
,eat
is adjuSted so thc switch is actuated in
the last 0.75 of an iDCh of
,car
extension.
b. The switch with the boot seal and
adjustin, rod (refer to Fipre 6-9, Sketch B) is adjusted by
placina the ,ear in fun down position and the strut fully
extended. Screw
the leNator
arm
(41)
down until
the switch clicks on. then screw down
an
additional 0.117 of
an
inch and secure with jam nut (40).
c. The round switch
used
on aircraft without the
a.d~
rod and arm "
adjusted by toml'fCSlinc
the strUt until
S.S inches is obtained betWeen the tOp of the par fork (34) and bottom of the
,eat
housiftJ
(15),
then adjust the switch down until it contaCtS the
smker
plate.
Secure
the switch and
safety.
d. Ascmain that either switch will aemate in the Jut 0.15 of
an
inch of oleo extension.
cs.S3. Adju.scmcnt Of The Gar Down
Limit
Switch.
a. Before ancmptiftJ any adjusancnt of the down limit switch. ucc:rtain that the nOK and main gear
drq link assemblies are properly adjusted. Refer to panpaph. 6·15 and 6-34.
b. Each main ,ear down limit switch attached to the sid.: brace dfll tint assembly
is
adjusted by
moving the switch toward or away from the Sft'iker place. When the
Iandiq
,ar
is
down and locked. the
limit switch should have broken contact.
c. The noSC gear down limit switch located at the left drq link
is
adjustcd by moving it toward or
away from the striker plate. When the ,ear is down and locked. the switch should have broken contact.
d. Check operation at the down limit switches by the fonowm, procedure:
1. Open landin, gear retraction motor circuit breaker.
2. Tum on the muter switch.
3. DisconneCt the rcmc:tion traftsmiuion by puUi.. up on the rclc:uc lever and manually
rctrl.cri"l the land"" Iftr UM, the emergency extension lever.
4. At the point where the IftCn light ,acs out. apply
rearward
pressure on the nose gear and
inward pressure on the main gear. The ,ear should not unlock.
6·54. Adjustment Of Gar' RetractiOn TnnmUuion Aaanbly. (Refer to Figure 6--14.) .~djust the
retraction transmission by using the following procedure:
a.
Release the
re~ction
tranSmission by pulling up on the mlCrJCncy release lever.
b. Adjust the pushwpuU cables so the cable
(1)
from the ",ht Iftr has three threads exposed forward
of the cutellated nut and the cable (2) from the left ,ear has one thread exposed forward of the castellated
nut. (A spanner wrench may be fabricated to tighten the c:utellatcd nuts. See Fiprc 6-40.)
NOTE
Thc main gear push·pull cables cross each other aft of the rcmaion
transmission.
LANDING GEAR AND BRAKE SYSTEM
ISSUED: 8/18/72
IJ16
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