Piper APACHE PA-23-235 Service Manual page 205

PIPER AZTEC SERVICE MANUAL
b. The control column roller guide assembly may be removed by the following
procedure:
1. Disconnect the recoil strap spring (1I) from the fuselage frame guide tube (3)
by removing the bolt and self-locking nut holding it in place. (S/N 27-1 to 27-7554168 only.)
2. Cut the safety wire and remove the bolt, spacer (14), bushing (12) and
roller (13) from each side of the guide tube.
3. Remove the bushing (12), spring (11), and roller mounting blocks (10)
by removing the bolt, bushing, and self-locking nut.
c. The control wheel tube roller assembly (4) may be removed by the following
procedure:
1. Remove the instrument trim panel that surrounds
the control tube by
removing attaching screws and disconnecting instrument lights behind the trim
panel, if installed.
2. Remove the four screws from around the control wheel tube that secure
the roller assembly.
3. If the control wheel assembly is still installed, remove the rolled as-
sembly by removing the self-locking nut, machine screw, roller,
and spring
washer from one side and at the bottom of the assembly thus separating the unit.
The assembly may be further disassembled as necessary.
d. Either sprocket assembly on the top of the control column maybe removed
by the following procedure:
1. Remove the chain (9) from the sprocket (15) by disconnecting the turn-
buckles on either end of the chain.
2. Remove the bolt and self-locking nut on the forward side of the sprocket
to be removed.
3. Remove the bolts installed through the forward end of the control wheel
tube, if not previously removed.
4. Remove the sprocket shaft and universal joint (20) from the aft side of
the tube.
5. Remove the two bearings (17) and shims (18 and 19), if installed.
e. Remove the center sprocket (2) by removing the attaching bolt and self-
locking nut.
f.
Remove the bottom center aileron pulley by removing the attaching nut,
washer and bolt.
g. Remove the bearings from the bottom of the tube assembly as follows:
1. Remove the nuts from either end of the retaining rod installed through
the tube.
2. Remove the retaining rod from the tube.
3. Move the tube away from the mounting brackets.
4. Remove the bearings from both ends of the bottom control tube.
SURFACE CONTROLS
Reissued: 2/18/81
1J3