Boeing 767 - Task 72-35-00-408-074-G00 - VSV Outer Flanged Bushing Installation; Subtask 72-35-00-428-076-G00; Subtask 72-35-00-428-078-G00; Subtask 72-35-00-848-081-G00

(g) Remove the damaged outer flanged bushing [8].
END OF TASK
TASK 72-35-00-408-074-G00
6. VSV Outer Flanged Bushing Installation
A. Location Zones
Zone Area
410 Left Powerplant
420 Right Powerplant
B. Procedure
(Figure 801)
SUBTASK 72-35-00-428-076-G00
(1) Install the IGV through 4th-stage VSV outer flanged bushing [8] as follows:
(a) Install the outer flanged bushing [8], spacer [7], lever arm [3], sleeve [2], and locknut [1].
1) Align the identification marks.
CAUTION
YOU MUST REPLACE THE LOCKNUT IF THE RUN-ON TORQUE IS LESS
THAN 5 IN-LB (0.6 N.M) OR IF MORE THAN 40 IN-LB (4.5 N.M). IF THE
LOCKNUT RUN-ON TORQUE IS NOT CORRECT, DAMAGE TO THE
ENGINE CAN OCCUR.
(b) Remove the lockwire and tighten the locknut [1] to run-on torque.
1) If the run-on torque is less than 5 pound-inches (0.6 N.m) or more than 40
pound-inches (4.5 N.m), replace the locknut.
(c) On IGV, 1st- and 2nd-stage lever arms, tighten the locknut to 50-60 pound-inches
(5.7-6.8 N.m).
(d) On 3rd- and 4th-stage lever arms, tighten the locknut to 85-95 pound-inches (9.6-10.7
N.m).
(e) Do a check of the vane assembly to make sure that a small movement is possible.
1) Hold the vane between your thumb and forefinger, and try to move the vane.
2) You must feel a very small movement of the vane.
a) If you do not feel a small movement of the vane, do the steps to install the
bushing again.
SUBTASK 72-35-00-428-078-G00
(2) Install the 5th-stage VSV outer flanged bushing [8] as follows:
(a) Install the outer flanged bushing [8] spacer [7], sleeve [2], and jamnut [6].
1) Align the identification marks.
(b) Remove the lockwire and tighten the jamnut [6] to 85-95 pound-inches (9.6-10.7 N.m).
(c) Install the lever arm [3] and the locknut [1].
(d) Tighten the locknut to 90-100 pound-inches (10.2-11.3 N.m).
SUBTASK 72-35-00-848-081-G00
(3) Do the task to "Put the Airplane to its Usual Condition after VSV Repairs."
END OF TASK
767
AIRCRAFT MAINTENANCE MANUAL
CF6-80A SERIES ENGINES
72-35-00
NoC
Page 807
D633T1B7 Aug 22/2017
ECCN 9E991 BOEING PROPRIETARY - Copyright © Unpublished Work - See title page for details
EFFECTIVITY
ABX 001-007, 011, 012, 016-019, 021, 022, 025, 101,
109, 114, 115, 314-999