Piper Arrow IV, Maintenance Manual

Page: 261 / 752

4. Disconnect the housing lug from the arm on the rudder pedal torque tube by removing cotter pin, nut,
washer and bolt.
5. Remove the threaded bushing from the aft end of the mounting channel by removing cotter pin and
clevis pin. Some mounting channels have two holes in the aft end, note from which hole in the clevis pin was
removed.
6. The mounting channel may be removed by removing the channel attaching screws at the inside of the
channel.
INSTALLATION OF RUDDER TRIM CONTROLS. (Refer to Figure 27-13.)
Install the rudder trim mechanism and set it at the neutral (no load on spring) position. Perform the
procedure only after all other rudder and nose wheel rigging is complete.
1. Install the trim control mounting channel on the upper side of the floor tunnel. A spacer plate on some
models is installed between the channel and the tunnel. Install the attaching screws which are secured with
anchor nuts.
2. Before attaching the assembly to the mounting channel, ascertain that the clips are installed so the
safety wire will be on top. Also, that the threaded bushing is installed on the assembly shaft with the welded
attachment bushing forward or toward the housing.
3. Attach the housing lug to the arm provided on the rudder pedal torque tube and secure with bolt,
washer and nut. Tighten the nut only finger tight and safety with cotter pin.
4. Clamp the rudder pedals in neutral and position the threaded bushing in the mounting channel. Turn
the control shaft until the holes in the bushing and channel align and then install the clevis pin and cotter pin.
Should two through holes be located in the aft end of the mounting channel, the pin must be installed through
the hole that will give equal travel and hit rudder stops before bottoming out of the trim assembly.
5. With the rudder pedals neutral and no pressure fore or aft on the clevis pin, install the assembly cover
so that the indicator washer and the neutral mark on the cover align.
6. Install the trim cover, secure with screws, and install the trim control knob.
RIGGING AND ADJUSTMENT OF RUDDER TRIM CONTROLS.
Perform these procedures only after all other rudder and nose wheel rigging is complete. No adjustments
are necessary other than those required during installation of the assembly in the airplane as given in
Installation of Rudder Trim Controls.
STABILATOR CONTROLS.
REMOVAL OF STABILATOR CONTROL CABLES. (Refer to Figure 27-14.)
1. To remove either the forward or aft stabilator cables, first remove the access panel to the aft section of
the fuselage located in the baggage compartment, and the bottom of the rear seat.
2. Disconnect the desired control cable at the turnbuckle in the aft section of the fuselage.
27-30-01
Page 27-26
Revised: February 23, 1979
1K21
PIPER AIRCRAFT
PA-28RT-201 / 201T
MAINTENANCE MANUAL