Connect the wire bundles. Remove the identification tags after
they are used.
Pull lightly on each wire to check the connections.
Install the clamps on the wire bundles (2 locations). Install
the washers and the nuts that hold the clamps and the wire
bundles to the control wheel.
Turn the control wheel full right and then full left. Make
sure the control wheel moves freely.
Do a continuity check of the electrical circuits for each
switch.
Remove the flight control computers (AMM 22-11-01/401).
Do the high-potential electrical-insulation tests that follow:
NOTE: Do these tests on the wire ends located at the bottom of
____ the control column. Turn the control wheel full right and then full left during the test.
1) Do a check between each wire and ground, and also between the wires that follow: a) White-Orange to Black b) White-Violet to Violet c) White-Black to Orange d) White/Black-Orange to Brown e) White-Red to White-Violet f) Pink to Pink g) White-Red to White-Red h) Brown to White-Blue i) Yellow to White-Yellow j) Green to White-Green k) Black/Blue to White-Black l) Black/Yellow to White-Brown m) Black/Grey to White-Pink n) Blue to Black-Yellow o) Black/Green to Red-Green
2) Make sure that the insulation resistance is at least 100 megohms. 3) Make sure that the insulation test does not cause an insulation failure.Install the medallion on the control wheel.
NOTE: Make sure the wire bundles are not held too tightly by
____ the medallion.
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A
757 MAINTENANCE MANUAL
(l)
Install the flight control computers (AMM 22-11-01/401).
(m)
Remove the DO-NOT-CLOSE tags and close these circuit breakers on the P11 panel: 1) 11E17, FLT CONT CMPTR PWR L
or FLT CONT COMPUTER POWER LEFT 2) 11E18, FLT CONT CMPTR SERVO L or FLT CONT COMPUTER SERVO LEFT 3) 11E20, FLT CONT CMPTR PWR CENTER or FLIGHT CONT CMPTR PWR CTR 4) 11E21, FLT CONT CMPTR SERVO CENTER or FLIGHT CONT CMPTR SERVO CTR 5) 11E35, FLT CONT CMPTR PWR R or FLT CONT CMPTR PWR RIGHT 6) 11E36, FLT CONT CMPTR SERVO R or FLT CONT CMPTR SERVO RIGHT
(n)
Do the MCDP test 11 A/P DISC SW (Ref 22-00-02). Make sure that no fault messages come into view.
F.
Put the Airplane Back to its Usual Condition
S 864-025
(1)
Remove the DO-NOT-CLOSE tags and close these circuit breakers on the P11 panel:
(a)
11C05 or 11H11, STAB TRIM CONT L
(b)
11H20, STAB TRIM CONT R
or STAB TRIM CONT RIGHT
(c)
INTERPHONE circuit-breakers:
1) 11C25
2) 11C26
3) 11G29
4) 11G30
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757
MAINTENANCE MANUAL
LATERAL CONTROL WHEEL INSPECTION/CHECK
______________________________________
1. General
_______
A. This procedure contains the data necessary to examine the control wheels for too much unwanted movement.
TASK 27-11-02-226-011
2. Lateral Control Wheel Freeplay - Check
______________________________________
A. Equipment
(1)
Control Wheel Protractor - A27021-29
(2)
Control Wheel Adapter Equipment - A27021-82
(3)
The Control Wheel Lock Assembly from the Control Wheel Adapter Equipment - A27021-81
(4)
Spring Scale - Commercially Available
B.
Access
(1)
Location Zones
211/212 Control Cabin
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