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737-300/400/500MAINTENANCE MANUAL
S 684-008-001
(4)
Drain the oil from the CSD (AMM 12-13-21/301).
S 684-009-001
(5)
Drain the oil from the spline cavity (AMM 12-13-21/301).
S 024-010-001
(6)
Remove the CSD from the engine:
(a)
Connect the adapter to the CSD case.
(b)
Loosen the QAD tension bolt.
CAUTION: MAKE SURE THAT YOU APPLY ONLY SUFFICIENT PRESSURE WITH THE
_______ CSD CRADLE TO HOLD THE WEIGHT OF THE CSD. TOO MUCH PRESSURE ON THE CSD OR FAILURE TO HOLD THE CSD CORRECTLY CAN CAUSE DAMAGE TO THE INPUT SEAL.
(c)
Adjust the cradle assembly to remove the weight of the CSD from the QAD ring.
CAUTION:_______DO NOT HIT THE TENSION BOLT ON THE QAD RING. DO NOT PUT A DRIFT THROUGH THE HOLE IN THE QAD RING BRACKET. THIS CAN CAUSE DAMAGE TO THE TENSION BOLT OR THE QAD RING BRACKET.
(d)
Remove the tension bolt from the QAD ring.
(e)
Turn the QAD ring until the lock lugs disengage.
NOTE: If it is necessary, lightly hit the lock ring boss
____ on the QAD ring with a brass drift and a plastic mallet.
CAUTION: DO NOT USE THE CSD INPUT SHAFT TO HOLD THE WEIGHT OF THE
_______ CSD. TOO MUCH WEIGHT ON THE CSD INPUT SHAFT CAN CAUSE DAMAGE TO THE INPUT SHAFT SEAL.
MOVE THE CSD IN A STRAIGHT LINE. IF THE INPUT SHAFT CATCHES, YOU CAN CAUSE DAMAGE TO INPUT SHAFT SEAL.
(f) Remove the CSD from the engine.
TASK 24-11-11-404-012-001
3. Generator Constant Speed Drive Installation (Fig. 401 and 402)
___________________________________________
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A 737-300/400/500MAINTENANCE MANUAL
REMOVE SEAL FITTING CAP
(REMOVE ONLY WHEN DRAINING
WHEN FILLING CAVITY
WET SPLINE CAVITY)
CSD Mounting Pad on Engine Accessory Gearbox with Adapter Removed
Figure 402
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737-300/400/500MAINTENANCE MANUAL
A. Special Tools and Equipment (1) F70333-24 - Adapter, Constant Speed Drive and AC Generator
NOTE: Boeing F70333-24 consists of a commercially available____ jack plus the F70333-25 Adapter Assembly. The F70333-24 holds the CSD and generator during removal and installation.
B. Consumable Materials
(1) B00025 Solvent - P-D-680 (2) D00068 Oil - MIL-L-23699, MIL-L-7808, or any oil that agrees with the specifications of CFM56-3 SB79-001
NOTE: Refer to the marker on the CSD to find the oil that is in the____
CSD.
C. (3) D00125 Lubricant - High Temperature 730691 (4) D00139 Lubricant - Oil - WD-40 (5) D00257 Lubricant - Molybdenum Disulphide, MIL-M-7866 (6) D00269 Lubricant - Grease, Unitemp 500 grease or equivalent (7) D00287 Lubricant, 0-ring - Acryloid HF866 (preferred) or HF825 (alternative) (8) D00615 Lubricant - Rheolube 733MZ (9) D00616 Lubricant - Rheotemp 500MZReferences
D. (1) AMM 12-13-21/301, Constant Speed Drive (2) AMM 24-11-00/101, AC Generator Drive System (3) AMM 24-11-11/501, Generator Constant Speed Drive (4) AMM 24-21-11/401, AC Engine-Driven Generator (5) AMM 24-22-00/201, Manual Control (6) AMM 71-11-02/201, Fan Cowl PanelAccess
(1) Location Zone 502 Fan Cowl LH
602 Fan Cowl LH
E. (2) Access Panel 5746L Fan Cowl Assy 5846R Fan Cowl AssyPrepare to Install the CSD and Generator
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