Installation Of Elevator Control Cables; Removal Of Elevator Bellcrank Assembly - Piper Navajo PA-31 Service Manual

PIPER NAVAJO SERVICE MANUAL
6.
Mark and disconnect the cables from the elevator bellcrank (14).
7. To remove the cable (10) that leads to the upper end of the elevator bellcrank (right cable),
remove the cable guard pins at stations 122.5, 153.0, 192.0, 243.0 and 277.0.
8. To remove the cable (1 1) that leads to the lower end of the elevator bellcrank (left cable),
remove the cable guard .pins at stations 122.5, 161.0, 200.5, 243.0 and 277.0.
9.
Draw the cable aft through the fuselage.
5-24. INSTALLATION OF ELEVATOR CONTROL CABLES. (Refer to Figure 5-5.)
a.
The control cables (1 and 2) that connect between the elevator control sector and the aft
control
cables (10 and 11) may be installed by the following procedure:
1. The outboard (left) cable (1) may be installed by drawing the cable forward from fuselage
station 110.5, around the forward pulley cluster, upward and attach it to the upper end
of the control
sector.
2. The inboard (right) cable (2) may be installed by drawing the cable forward from fuselage
station 110.5, around the forward pulley cluster, over the upper pulley and attach it to the
lower end of the
control sector.
3.
If aft control cables (10 and 11) are installed, connect the cables at station 110.5.
4.
Install cable guard pins.
b.
The control cables (10 and 11) that route aft, beginning at fuselage station 110.5 to the elevator
bellcrank, may be installed by the following procedure:
1. Connect the cables to the elevator bellcrank (14) and draw the cables forward through
the
fuselage.
2. Connect the cables to the forward cables at station 110.5.
3. Install the cable guard pins for the cable (10) that connects to the upper end
of the elevator
bellcrank (right cable) at stations 122.5, 153.0, 192.0, 243.0 and 277.0.
4.
Install the cable guard pins for the cable (11) that connects to the lower end of the elevator
bellcrank (left cable ) at stations 122.5, 161.0, 200.5, 243.0 and 277.0.
c. Set cable tension per Table V-1 and rigging and adjustment per Paragraph 5-27
d. Verify that all elevator control cables are properly routed around the pulleys and are secured
with
ca ble ouards. Verify if applicable that the red painted cable terminals are installed to the red painted
lug on the
aft bellcrank and to the red painted end on the forward sector. Verify that the elevator trailing
edge moves
"UP" when the control wheel is moved aft and vice-versa when the control is moved forward.
e. Install access plates. panels and seats.
5-25. REMOVAL OF ELEVATOR BELLCRANK ASSEMBLY. (Refer to Figure 5-5.)
a. Remove the left pilot's seat and the floor panel located to the left of the control pedestal.
b.
Relieve cable tension from the control system by loosening one of the cable turnbuckles
(3) at
station 110.5.
c.
Remove the access plate on the side of the fuselage under the horizontal stabilizer and
the tail
cone.
d.
At the bellcrank (14), disconnect the elevator control cables (10 and 11).
e.
Disconnect the elevator bungee spring (16) from between the attachment bracket (25)
at the
fuselage bulkhead and elevator control rod (15).
f. Disconnect the elevator control rod (15) from between the bellcrank (14) and elevator horn
(18).
g. Remove the bellcrank from its mounting bracket.
Revised: 3/2/84
SURFACE CONTROLS
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