1) Make sure that you align the index pin on the IDG [10] with the index hole on the
QAD engine adapter plate.
2) Make sure that the clearance between the IDG [10] and the QAD ring is equivalent
for all points around the IDG [10].
(g) Tighten the QAD tension bolt so that the QAD ring lugs fully engage the input flange lugs
on the IDG [10].
NOTE: Make sure that the QAD ring moves smoothly and does not bind or snag.
(h) Tighten the QAD tension bolt as follows:
1) Tighten the QAD tension bolt to 252 ±12 in-lb (28 ±2 N·m).
2) Tap the QAD in the area shown on (View B, Figure 401) with a soft mallet or brass
drift to prevent an incorrect torque value.
3) Do a check of the torque value of the QAD tension bolt and if the torque is less than
180 in-lb (20 N·m), do these steps:
a) Tighten the QAD tension bolt to 252 ±12 in-lb (28 ±2 N·m).
b) Repeat tapping and torquing to 252 ±12 in-lb (28 ±2 N·m) until the torque of
the QAD tension bolt does not drop below 180 in-lb (20 N·m) after tapping on
the QAD.
c) Tighten the QAD tension bolt to 252 ±12 in-lb (28 ±2 N·m).
4) If the first check of the torque of the QAD tension bolt is above 180 in-lb (20 N·m),
then do these steps:
a) Tap on the QAD ring and do a check of the torque again.
b) If the second check of the torque is above 180 in-lb (20 N·m), tighten the QAD
tension bolt to 252 ±12 in-lb (28.47 ±1.36 N·m).
SUBTASK 24-11-11-220-001
(2) Measure the distance between the center of the nuts on the QAD tension bolt.
(a) If the distance is less than 1.75 in. (4.44 cm), replace the QAD
(PAGEBLOCK 24-11-61/401).
SUBTASK 24-11-11-910-002
(3) Install a 0.032 in. (0.813 mm) diameter MS20995NC32 lockwire, G01912, or safety cable kit,
G51490 on the QAD tension bolt (TASK 20-30-51-910-801).
SUBTASK 24-11-11-080-001
(4) Lower the jack with the attached adapter and remove it from the engine.
SUBTASK 24-11-11-420-002
(5) Connect the power feeder leads [5] to the IDG [10] as follows:
(a) Remove the two screws [8] with washer [27] that attach the cover [7] to the IDG [10].
(b) Remove the four power feeder nuts [9].
CAUTION
DO NOT INSTALL ANY WASHERS UNDER THE POWER FEEDER
LEADS. LOCALIZED RESISTANCE HEATING CAN OCCUR WHICH
COULD CAUSE THE TERMINAL BLOCK TO BURN.
(c) Install the power feeder leads [5] on the power feeder terminals.
1) Make sure that the power feeder leads [5] are on the correct terminal.
737-600/700/800/900
AIRCRAFT MAINTENANCE MANUAL
24-11-11
Page 414
D633A101-ILF Oct 15/2019
ECCN 9E991 BOEING PROPRIETARY - Copyright © Unpublished Work - See title page for details
EFFECTIVITY
ILF ALL
To Next Page
Loading...
