(a)
If it is necessary, tighten the tension bolt on the QAD ring again.
S 284-034
(14)
Examine the IDG (1) installation to see if it feels loose.
S 214-057
(15)
If it is necessary, tighten the tension bolt on the QAD ring again.
(a)
If the IDG (1) continues to feel loose, replace the QAD ring (AMM 24-11-08/401).
S 914-035
(16)
Install a lockwire to the tension bolt on the QAD ring (46).
S 434-055
(17)
Remove the covers from the oil-in tube and the oil-out tube.
S 434-037
(18)
Remove the covers from the oil-in union (44) and the oil-out union (13).
CAUTION:_______ MAKE SURE THAT YOU KEEP THE IDG CLEAN DURING THIS PROCEDURE.
DO NOT LET UNWANTED MATERIAL GO INTO THE OIL SYSTEM. DIRT AND
OTHER UNWANTED MATERIAL CAN CAUSE DAMAGE TO THE IDG.
S 434-038
CAUTION: USE TWO WRENCHES TO HOLD THE FITTINGS WHEN YOU TIGHTEN THE OIL
_______ TUBES. IF YOU DO NOT USE TWO WRENCHES, TOO MUCH FORCE WILL BE TRANSFERRED TO THE IDG FITTINGS. THIS FORCE CAN CAUSE DAMAGE TO THE OIL TUBE FITTING AND THE IDG CASE.
(19)
Connect and tighten the oil-out tube (12) to the oil-out union (13).
S 434-039
(20)
Connect and tighten the oil-in tube (3) to the oil-in union (44).
S 644-040
(21)
Lubricated a new O-ring (14) with engine oil.
S 434-056
(22)
Install the new O-ring (14) on the union (15) for the overtemperature relief valve.
S 434-041
(23)
Install the union (15)for the overtemperature relief valve into its port on the IDG (1).
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24-11-01
ALL ú ú 02P Page 420 ú Feb 18/01
BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
A
747-400 MAINTENANCE MANUAL
S 434-042
(24)
Install the drain tube (16) for the overtemperature relief valve to the union (15).
(a)
Tighten the tube nut.
S 434-043
(25)
Connect the generator power wires:
(a)
Remove the terminal block screws (9) and the washer (10) that hold the terminal block cover (7).
(b)
Remove the terminal block cover (7).
(c)
Remove the nuts (6) and the washers (5) from the terminal studs.
(d)
Make sure the color sleeves are not damaged or missing, replace the sleeves (SWPM 20-10-14).
(e)
If the fanning strip is damaged or loose, replace the fanning strip.
CAUTION: MAKE SURE THAT YOU CONNECT THE GENERATOR WIRES TO THE
_______ CORRECT TERMINAL STUDS ON THE IDG. AN INCORRECT INSTALLATION CAN CAUSE A CIRCUIT MALFUNCTION, WHICH CAN CAUSE DAMAGE TO THE ELECTRICAL EQUIPMENT.
(f) Attach the four generator power wires (11) to the IDG terminal studs.
CAUTION: INSTALL THE WASHERS BETWEEN THE TERMINAL NUT AND THE
_______ GENERATOR POWER WIRES. IF YOU INSTALL THE WASHERS BELOW THE POWER WIRES, RESISTANCE HEAT CAN OCCUR. THIS HEAT CAN CAUSE DAMAGE TO THE IDG TERMINAL BLOCK AND THE GENERATOR POWER WIRES.
(g)
Install the washers (5) and the terminal nuts (6) on top of the generator power wires.
CAUTION:_______DO NOT USE TORQUE PUTTY ON THE THREADS AND NUT. DAMAGE TO THE TERMINAL STUD OR SPIRALOX NUT LOCKING ABILITY CAN OCCUR.
(h)
Tighten the terminal nuts to a torque of 144-168 pound-inches (16.3-19.0 N.m).
NOTE:____Spiralox nuts do not have run down torque. If a sprialox nut has run down torque, replace the nut.
(i)
Install the terminal block cover (7) with the two terminal block screws (9) and the two washers (10).
(j)
Tighten the screws to a torque of 20-22 pound-inches (2.3-2.5 N.m).
(k)
Move the fanning strip close to the terminal cover.
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