Piper Navajo PA-31 Service Manual page 152

HANG MASTER TEST
WEIGHT ON BOTH SIDES
OF PA-31-325
PIPER NAVAJO SERVICE MANUAL
2. RIGHT AILERON
(a) Obtain a main balance weight P/N 54325-3 which is at its maximum weight of 4.75 pounds.
(b) Install this new balance weight in place of the existing weight and secure with appropriate
hardware.
(c) Proceed to rebalance the aileron in accordance with steps a, b, and c, do not use more
than three (3) trim weights P/N 54395-2 and one (1) trim weight P/N 54395-3.
(d) The total balance weight trim weights and hardware must not exceed 5.2 pounds for the
right aileron.
157
TAPE TRIM TAB LEVEL
WITH ELEVATOR
ELEVATOR BALANCE JIG
KNIFE EDGES AT CENTER AND
TWO OUTBOARD HINGE LOCATIONS
10 LB (-0 -.04 OZ) LB
BALANCE LINE
MASTER TEST WEIGHT
ATTACHMENT POINT ON
ELEVATOR RIB
MASTER TEST WEIGHT
(SEE TABLE IV-I)
WEIGHT ARM
Figure 4-16. Elevator Balancing
a. Remove the left and right elevator assemblies from the airplane. Remove the torque tube and
horn. (Refer to Paragraph 4-28.) The complete assembly (both halves) with torque tube, horn, trim tab and
actuating rod must be reassembled and placed on a balancing jig. (Refer to Paragraphs 4-85 and 4-86.) Check
the assembly part number and model designation to ascertain that the particular specifications required from
Table IV-I are used when balancing the assembly.
Revised: 9/24/81
STRUCTURES
1G8