F. Engine Start Brake Assembly Installation
SUBTASK 76-11-10-020-005-F00
(1) Install the applicable start brake assembly (engine 1) [71] or start brake assembly (engine
2) [72] as follows:
(a) Put the start brake assembly (engine 1) [71] or the start brake assembly (engine 2) [72]
into its position in the control stand.
NOTE: Put the start brake assembly in its position for the installation of the forward pivot
parts.
(b) Install the washer [69] and the bolt [68] only through the brake assembly and the first
frame of the control stand.
(c) Put the spacer [70] in its position.
(d) Move the bolt and washer through the spacer, the second control stand frame, and brake
assembly.
1) Install the nut [66] and the washer [67].
(e) Pivot the speed brake up to do these steps:
1) Install the washer [74] and the bolt [73] for the upper start brake assembly mount.
2) Install the washer [74] and the bolt [73] for the lower start brake assembly mount.
SUBTASK 76-11-10-020-006-F00
(2) Install the applicable start lever to the start brake assembly as follows:
(a) Move the start lever to the IDLE position.
(b) Move the actuator arm of the start brake assembly to align with the control link.
(c) Install the bolt [65], the washer [64], the washer [62], and the nut [61].
SUBTASK 76-11-10-820-001-F00
(3) After you complete the installation of the applicable start brake assembly, do these checks:
(a) Move the start lever from the CUTOFF position to the IDLE position 2 or 3 times.
1) The lever must move freely and smoothly.
NOTE: The lever must not touch or catch on parts in the control stand.
(b) Measure the resistance in the movement of the start lever from the CUTOFF to the IDLE
position as follows:
1) Attach the spring scale, COM-754 to the start lever knob.
2) Make sure that the resistance is not more than 10 lbf (44.5 N).
(c) Measure the resistance to get the start lever from its detent position as follows:
1) Attach the spring scale, COM-754 to the start lever knob.
2) Make sure that the resistance is not more than 5 lbf (22.24 N).
SUBTASK 76-11-10-700-001-F00
(4) Do a check of the start brake assembly (engine 1) [71] as follows:
NOTE: Do the check only when you replace the LRU.
(a) Set the engine 1 start lever to the CUTOFF position.
(b) Do a check of the circuit values of the start brake assembly at the CUTOFF position.
1) Use adigital/analog multimeter, COM-1793 to measure the circuit values
(Table 401).
737-600/700/800/900
AIRCRAFT MAINTENANCE MANUAL
CFM56 ENGINES (CFM56-7)
76-11-10
Page 412
D633A101-ILF Jun 15/2019
ECCN 9E991 BOEING PROPRIETARY - Copyright © Unpublished Work - See title page for details
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