(g)
Shut down engine and wait until N1 and N2 rotors stop rotating (Ref 71-09-100).
CAUTION: DO NOT ATTEMPT TO RESET DISCONNECT WITH ENGINE ROTATING.
(h)
Slowly pull disconnect reset handle on underside of CSD to outward limit of travel. A click will be felt as the reset handle is pulled.
(i)
Start and run engine at idle speed (Ref 71-09-100, Operating Procedure). Check that reset has connected CSD to engine by checking the following. 1) Check CSD oil temperature. Temperature should rise slightly. 2) Check CSD LOW OIL PRESSURE light. Light should go off.
(j)
Restore system to normal.
1) Shut down engine (Ref 71-09-100).
2) Press ELEC and MASTER CAUTION lights to reset.
3) Close and lockwire DISCONNECT switch guard on P5 panel.
4) Set BAT switch on P5 panel to OFF.
24-11-11 Feb 01/95
Page 502
BOEING PROPRIETARY - Copyright . - Unpublished Work - See title page for details.
GENERATOR CONSTANT SPEED DRIVE - INSPECTION/CHECK
1. Generator Constant Speed Drive Check
A. General
(1) The internal wear of the constant speed drive is determined by observing the amount of magnetic material collected by the magnetic chip plug. The chip collector is a threaded plug supporting a permanent magnet.
B. Remove and Check Magnetic Chip Collector
WARNING: USE EXTREME CARE WHEN DRAINING CSD OIL OR REMOVING CSD COMPONENTS. HOT OIL CAN CAUSE INJURY.
PROLONGED CONTACT WITH CSD OIL CAN CAUSE DERMATITIS. OIL WILL STAIN CLOTHING AND CAN SOFTEN PAINT.
(1)
Remove only inner plug with 9/16 -inch hex. Do not remove 3/4 inch lockwired drain plug. A check valve prevents oil loss when magnetic plug only is removed.
(2)
Check material collected by magnetic chip collector.
(a)
A small amount of metallic fuzz is normal. Clean and replace the magnetic plug.
(b)
A heavy deposit of fuzz indicates excessive wear. Clean and replace magnetic plug. Recheck after next engine run. If a heavy deposit of fuzz is on chip collector after engine run, replace CSD, oil cooler and associated tubing.
(c)
Bright metal deposits of chips or flakes. Replace the CSD, oil cooler, and associated tubing.
C. Install Magnetic Chip Collector
(1)
Clean magnetic plug, removing all fuzz with brush and compressed air.
(2)
Torque from 15 to 20 pound-inches and lockwire.
D. Check oil level at sight gage after shutdown (Ref 12-13-21, SRV).
E. Check line oil filter pressure differential indicator.
(1) Change CSD if pressure differential indicator button is in the out position.
F. Examine oil in CSD.
(1) Visually examine the oil in the sight glass. If oil shows signs of abnormal discoloration (dark or black) due to contamination, sludging, coking, excessive temperature, or if oil mixing is suspected, replace CSD and flush oil cooler.
500
May 20/82 BOEING PROPRIETARY - Copyright . - Unpublished Work - See title page for details. 24-11-11 Page 601
GENERATOR DRIVE OIL COOLER - REMOVAL/INSTALLATION
1. General
A. The generator constant speed drive (CSD) system should not remain open while oil cooler is being serviced, cleaned or repaired. Have a spare cooler and bypass relief valve assembly available and instal1 immediately.
2. Remove Generator Drive Oil Cooler
A. Open engine cowl panels (Ref Chapter 12, Nacelle and Engine-To-Wing Access Doors and Panels).
B. Disconnect oil IN flex tube line from lower right side of oil cooler and discard O-ring (Fig. 401).
WARNING: USE EXTREME CARE WHEN DRAINING CSD OIL OR REMOVING CSD COMPONENTS. HOT OIL CAN CAUSE INJURY. PROLONGED CONTACT WITH CSD OIL CAN CAUSE DERMATITIS. OIL WILL STAIN CLOTHING AND CAN SOFTEN PAINT.
(1) Collect oil in suitable container and discard this oil.
C. Disconnect oil OUT flex tube line from lower left side of oil cooler and discard O-ring.
D. Cap ends of flex tube lines to prevent contamination of constant speed drive system.
CAUTION: TAKE ALL POSSIBLE CARE TO PREVENT ANY EXTRANEOUS MATERIAL FROM ENTERING ANY PART OF CSD SYSTEM.
E. Remove special nuts and washers from CSD oil cooler.
F. Remove generator drive oil cooler.
3. Install Generator Drive Oil Cooler
A. Install generator drive oil cooler gasket on engine fan bleed air pad.
NOTE: Faying surfaces must be clean and free of pieces of old gasket.
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