Cessna T303 Installation, Service & Parts Manual page 282

Avionic Installations Service Parts Manual
the FULL UP position, but must slip at 22 pounds.
NOTES
If the electric trim actuator clutch slips
prior to lifting the required weight (14 lbs)
to the full up position, DO NOT READJUST
CLUTCH, refer to step 4 to locate and re-
move the reason for excessive friction in
the elevator trim control system.
If the trim actuator does not slip at 22 pounds,
run the trim tab to its limit and continue to
let the clutch slip for 30 seconds. Slip the
clutch at both up and down travel limits. Re-
peat step 3.
Step 4. Check the trim tab hinge and linkage for
binding, check the trim system cables and chains for
proper tension, check system pulleys and actuator
for cinding
Step 5. After the trim system has been thorough-
ly checked and excessive friction removed, repeat
step 3.
MECHANICAL CLUTCH TORQUE ADJUSTMENT.
Table 1 is provided to call cut actuator clutch torque
settings and Table 2 is provided to call out cable ten-
sion settings for the ailerons, elevator and elevator
trim systems. However, for step-by-step proce-
dures on actuator clutch torque adjustment, refer to
the appropriate Autopilot Service/Parts Manual
MAINTENANCE.
For maintenance of the autopilot system and electri-
cal components used in the 400B and 400B IFC auto-
pilot systems, refer to the appropriate Autopilot
Service/Parts Manual.
TABLE 1. ACTUATOR CLUTCH TORQUE SETTINGS
1982 & ON
T303 SERIES
AUTOPILOTS
Clutch Torque Settings (in. lbs)
Aileron Elevator Elevator Trim Aileron
Actuator Part Number
Elevator Elevator Trim
400B
(Type AF-550A)
400B IFCS
(Type IF-550A)
1982 & ON
T303 SERIES
AUTOPILOTS
400B
(Type AF-550A)
and
400B IFCS
(Type IF-550A)
18± 2
18± 2
Cable
System
Aileron
20± 2
20± 2
22± 3
22± 3
45850-2909 45850-3912 44430-3235
45850-2909
45850-3912 44430-3235
TABLE 2. CABLE TENSION SETTINGS
Cable Tension Settings
Adjust turnbuckle to a point that when light finger pressure is applied
to the mid point of the lower actuator cable assembly, the cable will
produce a .25 inch deflection.
Adjust turnbuckle to a point that when light finger, side pressure is
Elevator applied to the chain, the chain will produce a .25 inch side deflection.
Elevator
Adjust turnbuckle to a point that when medium finger pressure is applied
Trim
to the lower chain, the chain will produce . 25 inch total vertical travel
(5-10 lbs pressure)
Figure 7-1. Rigging Procedures for Cessna 400B and 400B IFCS (Types AF-550A & IF-550A) (Sheet 14 of 14)
7-15