27-00-00 Page 27-15 Issued: April 1, 1997
CHART 2702. TROUBLESHOOTING CONTROL SURFACES (cont.)
STABILATOR TRIM CONTROL SYSTEM
Trouble Cause Remedy
Trim control wheel moves with excessive resistance. System not lubricated properly. Cable tension too high. Pulleys binding or rubbing. Cables not in place on pulleys. Trim tab hinge binding. Cables crossed or routed incorrectly. Electric Trim Servo Clutch binding, or incorrectly rigged. Lubricate system. Adjust cable tension. Replace binding pulleys. Provide clearance between pulleys and brackets. Install cables properly. Lubricate hinge. If necessary, replace. Check routing of control cables Check servo clutch for free and correct operation. Adjust rigging as necessary.
Trim tab fails to reach full travel. Trim indicator fails to indicate correct trim position. System incorrectly rigged. Trim drum incorrectly wrapped. Trim indicator unit not adjusted properly. Check and/or adjust rigging. Check and/or adjust rigging. Readjust trim indicator.
FLAP CONTROL SYSTEM
Trouble Cause Remedy
Flaps fail to extend or retract. Control cable broken or discon-nected. Replace or reconnect control cable.
Flaps not synchronized or fail to Incorrect rigging of system. Rig flap system.
move evenly when retracted.
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27-10-00 Page 27-17 Issued: April 1, 1997
AILERON CONTROLS
— NOTE —
Adjust and rig flap controls completely before adjusting and rigging aileron controls.
CONTROL COLUMN ASSEMBLY
REMOVAL OF CONTROL COLUMN ASSEMBLY. (Refer to Figure 27-6.)
1. To remove either control wheel with tube, the following procedure may be used:
A. Separate the control wheel tube from the flexible joint that is located on either side of the tee bar assembly by removing the nut, washer and bolt. Pull the tube from the flexible joint.
B. If removing the left control tube, slide the stop from the tube.
C. Should wires for the various Autopilot systems be installed in the control tube, disconnect them at the quick disconnect terminals behind the instrument panel. Draw the wires back into the tube and back out through the forward end of the tube.
D. Remove the control wheel assembly from the instrument panel.
2. To remove tee bar with assembled parts:
A. Remove the access panel to the aft section of the fuselage.
B. Relieve cable tension from the stabilator control cables at one of the stabilator cable turnbuckles in the aft section of the fuselage.
C. Relieve tension from the aileron control cables and chains at the turnbuckle that connects the chains at the top of the tee bar.
D. Disconnect the control chains from the control cables where the chains and cables join by removing the cotter pins, nuts, bolts and bushings.
E. If the control wheel assemblies have not been previously disconnected from the tee bar assembly, separate the control wheel tubes at the flexible joints by removing the nuts, washers and bolts.
F. Remove the tunnel plate just aft of the tee bar by laying back enough tunnel carpet to remove the plate attachment screws.
G. Remove the two aileron control cable pulleys attached to the lower section of the tee bar by removing the pulley attachment bolt.
H. Disconnect the stabilator control cables from the lower end of the tee bar assembly.
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