Installation Of Control Column Assembly - Piper Navajo Chieftain PA-31-350 Service Manual

NAVAJO CHIEFTAIN SERVICE MANUAL
5-7 INSTALLATION OF CONTROL COLUMN. (Refer to Figure 5-1.)
a.
Installation of the control column torque assembly may be accomplished by the following
procedure:
1.
Position but do not attach control arms (11,13,16 and 18) on uninstalled torque tube
assembly (14).
2.
Lubricate bearings (15 and 19) and attach bearings to their mounting locations.
3.
Slide the tube extensions inside torque tube and install the torque tube. Pull the tube
extensions through the bearings.
4.
Install the control sector (8), with the cables attached, on the end of extension tube. With
the sector, tube extensions and arms in position, install roll pins and bolts (10,12,17 and 82). Tighten bolts
to a standard torque.
5.
Reconnect elevator cable turnbuckle at station 86.50 and set cable tension per specifications
given in Table V-II.
b.
The aileron chain sprocket assembly may be assembled and installed by the following procedure:
1.
Press the sprocket shaft bushings (57) in the sprocket housing (37 or 61).
2.
Position the sprocket (46 or 50) in the housing, spacer bushing (66) (right only) and slide
the stud (64) in place). Insert bolt (63) through the sprocket and stud, install nut (65) and tighten to a
standard torque. Use Kaynar wrench, P/N W10-3.
Kaynar Mfg. Co. Inc..
800 S. State College Blvd.
Fullerton, California
3.
Install the stud washers (59) and nut (58), and tighten enough to allow the sprocket to
rotate free with no end play.
NOTE
The left sprocket must be placed in its housing to allow the
sprocket to rotate 180 from stop to stop.
4. Attach the sprocket assembly to the bulkhead and torque.
5.
Position the horizontal roller chain (40 and 42) around the right and left sprocket and
temporarily connect turnbuckles. Check chain tension and correct position after both control wheels are
installed.
6.
If the left sprocket assembly was removed, wrap the vertical chain around the sprocket and
connect the chain to the control cable end. Ascertain that when the sprocket is centered between stops the
roller chain is centered. Set aileron cable tension per specifications given in Table V-ll and safety turnbuckle.
turnbuckle.
c.
The square tube (31) assembly may be assembled and installed by the following procedure:
1.
Slide the square tube (31) in the roller housing (23).
2.
Install the rollers (69) and washers (68) on the roller housing and adjust with the use of the
eccentric bushings in each roller to allow .003 of an inch between the square tube and rollers. Finish by
installing angles (72) shimmed with spacer washers (70) as required, and tighten bolt assemblies to a
standard torque. Recheck clearance between rollers and square tube and lubricate the rollers.
3.
Install the bearing housing (22) with bearings (74) on the roller housing. Install collar (21)
and cap bolts (67). Rotate the collar tight against the bearing housing, tighten cap bolts and safety.
4.
Ascertain that the four nylon guides (75) are installed and safetied.
5.
Slide the collar (34) on the forward end of the square tube.
6.
Place the square tube assembly in position and connect it to the flexible joint (36) of the
sprocket assembly. Install bolt assembly and secure.
7. Connect link assembly (30) to control arm (11, 13, 16 and 18) and bearing housing (22).
Reissued: 9/23/80
SURFACE CONTROLS
1H22