E. If QAD ring is on engine pad, spray exposed inner diameter with WD-40 lubricant. If QAD ring is not on engine, install per steps (1) thru (5).
NOTE: Adapter plate must have O-ring retainer groove and may have three aligning inserts spaced 120 degrees on periphery.
(1)
Place new gasket on engine accessory drive pad with extra hole for CSD locating pin at about 5 o'clock position of engine pad, when looking forward (Fig. 401).
(2)
Lubricate O-ring with Acryloid and install O-ring in adapter plate retainer groove.
(3)
Thread QAD ring on adapter plate. Lubricate locking lugs with anti-fretting compound.
(4)
Install adapter plate and QAD ring assembly with locating hole matching hole in gasket. Secure with screws. Torque from 180 to 210 pound-inches (12 places).
(5)
Install screened orifice plug in engine pad, at approximately 12 o'clock position when looking forward. Discard solid plug if one is found in this location. Wet spline cavity must have vent to engine gearbox.
F. Lubricate drive O-ring with Acryloid and install O-ring in drive retainer groove.
5. Install Generator Constant Speed Drive (Fig. 401 and 402)
A. Lubricate QAD locking ring and adapter plate threads with anti-fretting compound and install constant speed drive gasket on CSD unit.
B. Position QAD locking ring with boss just below 3 o'clock position of engine pad, when looking forward.
C. Using cradle adapter assembly as a support for constant speed drive, align locating pin with hole in the QAD adapter plate.
D. Mate drive input end to the QAD assembly.
E. Rotate the QAD ring until locking lugs are firm and locking bolt may be threaded into swivel nut.
NOTE: Drive lugs must engage quick-attach-detach lugs while ring is rotated.
F. Lubricate CSD lug bolt, washer, and associated bracket area with CSD oil. Also, lubricate threads of swivel nut on QAD locking ring boss.
G. Thread CSD lug bolt into QAD ring swivel nut.
H. Relieve overhung weight of CSD and/or generator by lifting at rear end and torque the CSD lug bolt from 90 to 100 pound-inches. With a brass drift, tap the exposed outer diameter of the QAD ring to center QAD ring and eliminate false torque readings. Torque bolt from 90 to 100 pound-inches. Repeat tapping and torque procedure until a minimum of 72 pound-inches is obtained at beginning at the retorque step, then torque CSD lug bolt to final value of 90 to 100 pound-inches. Check for a minimum clearance of 3/16 inch between bracket and locking ear.
NOTE: If the QAD ring dimension is less than 3/16 inch minimum, remove the CSD and check for wear or damage on the QAD ring and the CSD. Replace parts as necessary and install the QAD ring and/or the CSD.
500
Apr 01/97 BOEING PROPRIETARY - Copyright . - Unpublished Work - See title page for details. 24-11-11 Page 403
I. Loosen the lug bolt, without backing off the QAD ring, until a torque value of zero (0) is obtained. Lockwire bolt to QAD ring.
J. Remove cradle adapter assembly.
K. Install ac generator, if generator was not assembled to CSD before installation of CSD (Ref 24-21-11 R/I).
L. Remove all oil remaining in generator drive oil cooler and connecting plumbing.
CAUTION: USE EVERY PRECAUTION TO PREVENT ANY FOREIGN MATERIAL IN OIL COOLER OR PLUMBING FROM ENTERING CSD. REPLACE OIL COOLER IF CONTAMINATED. ALSO CLEAN THOROUGHLY ALL TUBING BETWEEN COOLER AND DRIVE UNIT.
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