Piper Warrior III - S-TEC MANUAL ELECTRIC TRIM CLUTCH CHECK & ADJUSTMENT

PIPER AIRCRAFT, INC.
PA-28-161, WARRIOR III
MAINTENANCE MANUAL
PAGE 13
Nov 30/062I13
27-30-00
4. S-TEC Manual Electric Trim Clutch Check & Adjustment (Refer to Figure 6.)
A. S-Tec Manual Electric Trim is an optional system in Warrior III S/N’s 2842019 and up. When
installed, a servo motor, capstan, and idler pulley assembly are attached to the left stabilator trim
cable just aft of Sta. 156.00.
B. Check and adjust the servo clutch as follows:
(1) Remove the trim cable guards and trim cable from capstan. Remove the capstan cover. Check
capstan torque by attaching the capstan adjusting tool (special tool) to the capstan and using a
currently calibrated torque wrench as shown in Figure 6. Acceptable torque is 29 ± 1 IN. LBS. If
adjustment is required, proceed as follows.
(2) Remove servo motor and capstan. Place servo motor and capstan in a holding fixture (vice)
with capstan up. Remove capstan cover. Remove cotter pin from end of servo shaft and
remove castle nut, shim washers, and tension washers.
(3) Replace tension washers as required (1 ea. 0.032 in. (Red) and 2 ea. 0.040 in. (Blue)). Replace
shim washers and castle nut.Tension castle nut so that capstan torque is as specified above.
(4) Reinstall servo motor and capstan. Adjust stabilator trim cable tension as specified in Chart 2,
27-00-00.
S-TEC Manual Electric Trim Clutch Adjustment
Figure 6
S-TEC TOOL
(SEE PARTS CATALOG)
SCREW (4 REQ'D.)
CABLE GUARD (4 REQ'D.)
SHIM WASHER (MIN. 1 REQ'D.)
CAN BE USED IN ANY COMBINATION TO
ALIGN COTTER PIN WITH SHAFT HOLE
TRIM SERVO
CAPSTAN COVER
TORQUE WRENCH
CASTLE NUT
AN320-5
COTTER PIN
MS24665-134
(1/16)
WASHER (4 REQ'D.)
AN936-A4
TENSION WASHERS
S-TEC P/N 1253 (.032, RED) AND/OR
S-TEC P/N 1253-1 (.040, BLUE)
AS REQ'D. - SEE TEXT.
100831 S