Control Column Assembly Installation - Piper PA-24 Comanche Service Manual

PIPER COMANCHE SERVICE
MANUAL
c. The square Nbe assembly may be removed from the sprocket assembly by the following
procedure:
1. Remove the bulkhead seal. nut and washer (31) from the shaft at the sprocket bracket.
2. Remove hex nut. wwer and bolt (12) from the shaft and sprocket axle (36). Use a Kaynar
wrtnch (PIN WIG-3) to remove the nut.
3. Remove the square tube with shaft from the sprocket uaembly takinc care that the sprocket
and washers do not faU.
d. If the sprocket assembly housinJ is not to be removed. the roller assembly may
be removed from
the square Nbe at the guide or aft end by the followin, procedure:
1.
Cut the safety wire (16) holdi.. the Dylon rub blocks
(23)
used u pides and remove the
blocks. Nylon blocks
art
secured by anachinJ screws.
2. Slide the roller usanbly from the square tube.
5·7. Installation Of Conarol Column Allembly. (Refer to Figure 5-1.)
a.
When installing the control column assembly. fint install the components of the square tube
assembly. If the nylon rub blocks
(23)
have been removed. install and tiBhten than on their anaching
screws and secure in place with safety wire. Washers (25), Pan No. 81342·78 may be installed as required
under the nylon rub blocks
(23)
to remove play betWeen the square tube
(3)
and control tube
(2)
without
restricting control tube movement over !quare tube.
b. If both the sprocket assembly and roller URmbly have been removed. the roller assembly may be
replaced over the forward end of the square tube shaft. Adjust with spacer washers and rotate the eccentric
bushing (37) to maintain 0.003 of an inch clearance betWeen one roller (15) and the tube (3) with the
opposite roller in contact with the tube. Adjust c:leannce of the other let of rollers.
c.
To avoid unnecessary disassembly of control tube when chcckm, end play of the collars (21 and
22) and cable attachment fittinc (20), pre-assemble to obtain clearances required between the cable
attachment fitting and the fore and aft collus. Prc-asscmble u folio. .:
1.
Slide the aft collar (22). cable attachment limn, (20). forward collar
(21),
and roller assembly
onto the control tube (2).
2. Temporarily insert forward coUarand roller assembly anachinc bolts (17).
3. Move the aft collar until the collars and
fittinJ
contact. then withdraw the aft collar until the
fust of iu staaered holes align with the holes in the control tube.
4.
Instill bolts (17) in aft collar.
S. Check clearances between either collar and cable at1aChment littinl. Note the required seal
washers (18) that will be equal on each side of the cable attachment flai... to maintain a clearance of 0.003
to 0.013 of an inch.
6. Draw line from roller bearing housinJ aero. collan and cable attachment fittillJ to control
tube to mark their relative positions.
7. Remove the bolts. roUer UlCmbly. callan and cable
titti.
from the control tube and
continue with step d.
d. To install the square tube with sprocket usembly. proceed as follows:
1. Position sprocket (26 or 27) in sprocket brackets (4 or 8) and place wuher (38) on square
tube shaft (3).
2. Slide squarc tube shaft into sprocket bracket and sprocket. Attach sprocket with bolt. washer
and hex. nut (12) usin, KayDar wrench (PIN
Wl().3).
SURFACE CONTROLS
ISSUED: 1!1ln2
I FIB
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