757 MAINTENANCE MANUAL
S 866-085
(2) Remove the DO-NOT-CLOSE tags and close these circuit breakers on the P6 panel:
(a)
6B5, L GEN DRIVE DISC
(b)
6B6, R GEN DRIVE DISC
S 416-039
(3) Close the fan cowl panels (AMM 71-11-04/201).
TASK 24-11-01-216-049
6. Check the IDG Pressure Oiler (Service Fitting) and Pressure Cap (Fig. 602)
_______________________________________________________________
A. General
(1) This is a check for pressure oiler (service fittings) and pressure cap oil leakage.
B. References
(1)
AMM 24-11-02/201, Scavenge Filter
(2)
AMM 71-11-04/201, Fan Cowl Panels
C. Equipment
(1) Container - 2 U.S. gallon (8 liter) capacity,
suitable to collect oil drainage from the IDG
D. Access
(1)
Location Zones
(a)
410 Left Power Plant Nacelle
(b)
420 Right Power Plant Nacelle
(2)
Access Panels
(a)
413/423 Fan Cowls Left
(b)
414/424 Fan Cowls Right
E. Procedure
S 016-052
(1)
Open the fan cowl panels (AMM 71-11-04/201).
S 286-059
(2)
Do these steps to examine the pressure cap:
(a) Make sure the pressure cap has no oil leaking from the cap.
NOTE: If the pressure cap has oil leaking from the cap, the
____ pressure oiler must be replaced.
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BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
A
757
MAINTENANCE MANUAL
CAUTION:_______ DO NOT PULL ON THE LANYARD OR SPLIT RING TO REMOVE THE
CAP. PULL ON THE OUTER COVER OF THE PRESSURE CAP TO
REMOVE THE CAP. IF YOU PULL ON THE LANYARD OR SPLIT RING
TO REMOVE THE CAP, DAMAGE TO THE SPLIT RING OR LANYARD
WILL OCCUR.
(b)
Pull on the outer cover of the pressure cap and remove the pressure cap.
(c)
Examine the pressure cap O-ring for cuts, nicks or a hard O-ring. 1) If damage to the O-ring is found, replace the O-ring.
(d)
Examine the ball bearings in the cap and the bore of the cap for cuts, nicks gouges or missing bearings. 1) If damage to the pressure cap bore is found, replace the
cap.
(e)
Clean the oil from the inside of the cap with Isporopyl alcohol. Dry the cap with dry compressed air or nitrogen.
NOTE: Do not use chlorinated solvent to clean the
____ pressure cap. Chlorinated solvents can cause damage to the IDG and the IDG oil system.
S 286-060
(3) Do these steps to examine the pressure oiler (service fitting):
CAUTION: DO NOT USE A BLUNT TOOL TO PUSH ON THE PRESSURE OILER SPRING
_______ POPPET. VENT THE IDG OIL SYSTEM WITH AN OIL FILLING ADAPTER. THE BLUNT TOOL CAN CAUSE DAMAGE TO THE PRESSURE OILER AND IDG OIL LEAKAGE CAN OCCUR.
(a)
Make sure the pressure oiler (service fitting) does not have any nicks, scratches or gouges in the O-ring grove or on the sides of the oiler.
(b)
Make sure oil does not leak from the pressure oiler.
1) If oil is not leaking from the pressure oiler, clean the oil from the pressure oiler with Isporopyl alcohol. Dry the oiler with dry compressed air or nitrogen.
NOTE: Do not use chlorinated solvents to clean the
____ pressure oiler. Chlorinated solvents can cause damage to the IDG and the IDG oil system.
(c) If oil is leaking from the pressure oiler poppet, do the following: 1) If the IDG has a Push-To-Vent button, push the button. 2) Put a container below the IDG to catch the oil which will
flow from the IDG.
3) Put the end of the overflow drain hose into the container.
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