Removal Of Stabilator Trim Controls (Aft); Installation Of Stabilator Trim Controls (Aft); Rigging And Adjustment Of Stabilator Trim - Piper Lance II Service Manual

LANCE II SERVICE MANUAL
5-19. REMOVAL OF STABILATOR TRIM CONTROLS (AFT). (Refer to Figure 5-9.)
a. Remove the access panel to the aft section of the fuselage.
b. Block the trim cables at the first set of pulleys (13) forward of the cable turnbuckles
(10 and 11) in the aft section of the fuselage by the method shown in Figure 5-8.
c. Disconnect the cable (12) at the turnbuckles (10 and 11) in the aft section of the
fuselage.
d. Remove cable guard (18) from pulley cluster (35) and cable guards (19) from pulley
cluster (41).
e. Remove the fin tip by removing attachment screws.
f. Disconnect the push rod (30) by removing the attaching hardware (29) securing
push rod to screw (22).
g. Remove safety wire, bolts, washers and bushings (20, 44 and 47) securing forward end
of barrel (21). Remove snap ring (28) to free aft end of barrel (21).
h. Draw the trim cable (12) from the fuselage and up the fin.
5-20. INSTALLATION OF STABILATOR TRIM CONTROLS (AFT). (Refer to Figure
5-9.)
a. Wrap the trim barrel (21) by first laying the center (as measured equally from each
end to the center of the cable) of the trim cable (12) in the slot of the barrel. Bring the half
of the cable to be used on the right side through the diagonal slot in the flange at the
forward end of the barrel and wrap aft in a clockwise direction 7 wraps to the center of
barrel. Bring the half of the cable to be used on the left side through the diagonal slot in the
aft end of the barrel and wrap forward in a counterclockwise direction 7 wraps to the center
of barrel. Count a total of 14 cable wraps on the top side of the barrel. (Refer to Figure
5-10.)
b. Block the cable by clamping between two pieces of wood laid next to the wraps to
prevent unwrapping. Fabricate block with a notch so hardware (20) can be installed. After
installation of hardware safety wire the bolts.
c. Lubricate the bearings (24, 25 and 26) and install barrel (21) per exploded view
given in Figure 5-9. Use spacer washers (42) as required to give a maximum barrel end play
of .0005 to .0015. Install the barrel using any combination of AN960-10, AN960-10L and
AN960PDIOL washers (43) to achieve free barrel rotation with trim cable rigged and
tensioned.
d. Route the cables down the fin into the fuselage through the two pulley clusters (35
and 41) and attach the ends to the forward trim cables (8 and 9).
e. Install all cable guards (18 and 19).
f. Remove the blocks that are holding the forward cables tight and aft cables at the
barrel.
g. Set cable tension and check rigging and adjustment per Paragraph 5-21. Check safety
of all turnbuckles.
h. Install fin tip and secure with screws.
i Install the access panel to the aft section of the fuselage.
5-21. RIGGING AND ADJUSTMENT OF STABILATOR TRIM. (Refer to Figure 5-9.)
a. Level the airplane. (Refer to Leveling, Section II.)
b. Check for proper stabilator trim cable tension as given in Table V-I. If cables were
disconnected, rotate control wheel several times to allow the cables to seat and recheck
tension.
c. Secure the stabilator in neutral position. To find neutral, place a rigging tool on the
upper surface of the stabilator as shown in Figure 5-6. Zero a bubble protractor, set it on
the rigging tool and tilt the stabilator until the bubble is centered.
Revised: 9/2/78 SURFACE CONTROLS
1G11