S 024-018
(4)
Remove the bolt, washer, and nut from the attachment tab on the counter balance unit, and keep the hardware for the installation.
S 024-019
(5)
Remove the counter balance unit.
TASK 23-32-11-424-008
3. Counter Balance Unit Installation_________________________________(Fig. 401)
A. References
(1) AMM 23-32-01/401, Retractable Video Monitor
B. Access
(1) Location Zones 221/222 Passenger Cabin - section 41 223/224 Area above ceiling, Passenger Cabin - section 41
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C. GUN 051,101-103; Procedure
S 864-010
(1)
Put the counter balance unit into the usual position on the
retractor assembly frame with the attachment tab aligned.
S 424-009
(2)
Install the bolt, washer, and nut to attach the counter balance unit to the frame.
S 424-011
(3)
Install the center rod for the counter balance unit:
(a)
Put the rod into the counter balance unit with its small hole aligned with the cotter pin hole in the tube.
(b)
Install a cotter pin into the hole through the rod and the tube.
S 424-012
CAUTION: DO NOT LET THE CABLE WIND INTO THE COUNTER BALNCE UNIT.
_______ THIS INSTALLATION HAS NOTHING TO RETAIN THE DISCONNECTED CABLE. IF THE CABLE WINDS INTO THE COUNTER BALANCE UNIT, THE UNIT BECOMES UNSERVICEABLE.
(4) Carefully attach the cable to the cable attachment on the monitor support frame:
(a)
Attach the cable to the cable attachment on the monitor frame.
(b)
Remove any retention device used on the cable.
S 424-013
(5) Install the retractable video monitor (AMM 23-32-01/401).
D. GUN 008-010,104-999; Procedure
S 864-021
(1)
Put the counter balance unit into the usual position on the
retractor assembly frame with the attachment tab aligned.
S 424-022
(2)
Install the bolt, washer, and nut to attach the counter balance unit to the frame.
S 424-023
(3)
Install the center rod for the counter balance unit:
(a) Put the rod into the counter balance unit with its small hole aligned with the cotter pin hole in the tube.
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(b) Install a cotter pin into the hole through the rod and the tube.
S 424-026
(4)
Attach the cable to the cable attachment on the monitor support frame.
S 414-025
(5)
Install the retractable video monitor (AMM 23-32-01/401).
E. Counter Balance Unit Installation Test
S 714-014
(1) Operate the forward video monitor retractor mechanism between the "stow" and "view" positions.
(a) Make sure the mechanism operates freely.
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ZONE INTERFACE BOX - REMOVAL/INSTALLATION
_________________________________________
1. General_______
A. This procedure has two tasks. The first task removes a zone interface box (ZIB). The second task installs the ZIB and does a test of the installation.
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