Piper Comanche PA-24 Service Manual page 330

PIPER
COMANCHE SERVICE MANUAL
I First. check
to
determine that the oleo housing is not restricted from swinging far
~no.
forward as a result of the steering arm roller bushing (12) pressing against the steering bellcrank (1:11.
preventing one or both links from dropping into the locked position Should the roller bushing
int~rf
.
remove the bushings until after adjustment is completed.
2 To check for correct adjustment of forward drag link attachment fittings. proceed as follows
(a) Remove the cotter pin. nut and washer from the bolt attaching the lower drag links (34
and 35) to the strut housing
(b) To determine that the bolt is a slip fit. slide it back and forth through the fittings
(c) Remove the bolt and swing the drag links up and down along the sides of the strut fitting
to determine that there is clearance between the drag link fittings and the strut fitting
(d) If there is binding or the drag link fittings will not swing up and align with the strut
fitting without forcing them to either side. the entire strut housing (5) must be shimmed
to
the right or left at
the upper strut attaching arms to allow proper alignment of the drag links and strut fitting
(e) If there is excessive clearance which would allow the drag links to be drawn together
causing binding when the attaching bolt and nut are tightened. spacer washer> (36) should be installed
between the drag link and strut fitting A maximum of two washers are allowed on either side of the strut
fitting.
(f) With the drag links and strut housing adjusted for proper clearance of the lower drag link
attachment fittings. and the attaching bolt is a slip fIt. secure the bolt with washer. nut and cotter pin
(g) Extend and retract the nose gear manually to check that each link assembly locks
simultaneously and independently of each other
(h) Should further adjustment be necessary. then shims (23) available in 0016. P
~
21820-02: 0.020. p.
~
21820-03 and 0 032. p.
~
21820-04 can be installed Or removed. as re4uired. between the
forward cabin bulkhead and the two center bottom attaching points of the landing gear mount.
is binding.
!..:OTE
The maximum amount the landing gear mount can be shimmed is
o
120 of an inch
(i) Remove or add shims at the forward cabin bulkhead on the same side as the drag link that
(j)
Each time a shim is removed or added. the lower dnig link fittings should be checked for
adjustment as described in steps "b" thru "e" for this adjustment may change and now be the cause of the
binding
(k) When proper adjustment is attained. the drag link> will lock ,imultaneou,ly and
independently of each other when the gear is extended manually and the lower drag link attaching bolt will
be a slip fit
3 When shims are installed or removed between the forward bulkhead and landing gear mount
support. the bolt hole in the tang (24) of the mount support may be out of alignment with the hole in the
fuselage When this occurs. drill the holes to the next larger sile not exceeding 0312 of an inch
4 Secure the lower drag link attaching bolt. cross brace and downlock spring(s) with washers
and nuts
5. Connect and adjust the retraction push-pull rod (Refer to Paragraph 6-56)
ISSUED: 8/18/72
1112
LANDING GEAR AND BRAKE
SYSe