Installation Of Elevator; Removal And Installation Of Elevator Trim Tab; Removal And Installation Of Horizontal Stabilizer - Piper Navajo Chieftain PA-31-350 Service Manual

NAVAJO CHIEFTAIN SERVICE MANUAL
4-29. INSTALLATION OF ELEVATOR. (Refer to Figure 46.)
a.
Place the elevator torque tube assembly in position with its mating hinge bracket.
b. Install hinge bolt assembly, torque and safety.
c.
The elevator push-pull rod may be connected to the arm of the torque tube assembly.
d. Place the elevator in position, install bolt assembly and torque.
e.
Install bolts attaching the torque tube bracket and elevator. Ascertain that the elevator halves
align and tighten bolts.
f.
Insert the elevator trim tab control rod through the right elevator and secure in position. Torque
bolt.
g. Check elevator for proper operation.
h.
Connect the navigation light wires and place the tail cone assembly in position. Start all screws
with washers and then tighten.
4-30. ELEVATOR TRIM TAB.
4-31. REMOVAL OF ELEVATOR TRIM TAB. (Refer to Figure 4-6.)
a. Disconnect the control rod at the tab.
b.
Remove the hinge bolts securing the tab.
4-32. INSTALLATION OF ELEVATOR TRIM TAB. (Refer to Figure 4-6.)
a.
Place the trim tab in position, install bolts and torque.
b. Position the tab control rod, install bolt and torque.
4-33. HORIZONTAL STABILIZER.
4-34. REMOVAL OF HORIZONTAL STABILIZER. (Refer to Figure 4-6.)
a. Remove the left and/or right elevator in accordance with paragraph 4-28.
b. Remove the access plates located on each side of the fuselage under the horizontal stabilizers and
the panel located on top of the fuselage aft of the vertical fin.
c. Remove the access panel to the aft inside section of the fuselage.
d. To remove the right stabilizer, locate the elevator trim cable turnbuckles in the aft section of the
fuselage, mark the ends of one turnbuckle to facilitate reinstallation, and block the cables at one of the
fuselage bulkheads and in the stabilizer to prevent the trim cables from unwinding. (Refer to Figure 4-3.)
e. Disconnect the trim cables.
f. Through the top access hole, remove the two elevator trim cable pulleys, spacer and bolt. Draw
the cables through the fuselage to this point.
g. Disconnect the elevator trim sender wires and deicer lines.
h. Remove the mounting bolts that attach the front spar to the fuselage bulkhead.
i. Remove the mounting bolts that attach the elevator torque tube hinge bracket and rear spar.
j. Pull the stabilizer directly away from the fuselage.
4-35. INSTALLATION OF HORIZONTAL STABILIZER. (Refer to Figure 4-6.)
a. Trial fit to ascertain gap between stabilizer and fuselage skin surface is .187 of an inch. Trim to
obtain this gap.
b. Ascertain that the sealer extrusion is attached to the inboard side of the elevator.
c. Put the stabilizer in position and align the front and rear spar mounting holes. If installing a right
stabilizer, guide the elevator trim cables and sender wires into the fuselage.
d. Position the elevator torque tube hinge bracket and temporarily install the rear spar mounting
bolts.
Reissued: 9/23/80
1F12