12-13-03
ALL ú ú 01 Page 313 ú May 28/00
BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
(c)
A
757
MAINTENANCE MANUAL
CAUTION:_______ DO NOT REMOVE THE OVERFLOW DRAIN HOSE FROM THE IDG
UNTIL TWO MINUTES AFTER THE OIL FLOW HAS DECREASED TO
DROPS. FAILURE TO DRAIN THE IDG CORRECTLY WILL CAUSE
TOO MUCH OIL IN THE IDG. THIS CONDITION WILL CAUSE
AN IMMEDIATE OVERHEAT CONDITION AND CAUSE DAMAGE TO
THE IDG.
11) When the oil from the overflow drain hose decreases to a
drop, wait two minutes then remove the overflow drain hose. 12) Install the cover on the IDG overflow drain coupling.If no leaks are found, do the following steps: 1) Wait for 5 minutes, after engine shutdown, for the IDG oil
level to become stable. 2) Remove the cover from the OVERFLOW drain valve. 3) Put a container below the IDG to catch the oil which will
flow from the IDG. 4) Put the end of the overflow drain hose into the container.
WARNING: BE CAREFUL WHEN YOU CONNECT THE OVERFLOW DRAIN HOSE.
_______ PRESSURE IN THE IDG CAN CAUSE HOT OIL TO COME OUT OF THE OVERFLOW DRAIN COUPLING AND CAUSE INJURY TO PERSONS.
CAUTION: USE THE CORRECT ADAPTER TO RELEASE THE PRESSURE FROM
_______ THE IDG. INCORRECT ADAPTER WILL NOT RELEASE THE PRESSURE IN THE IDG. THIS CAN CAUSE AN INCORRECT OIL LEVEL IN THE IDG AND THE SUBSEQUENT FAILURE OF THE IDG.
5) Hook up the overflow drain hose to the overflow drain coupling. a) Let the oil flow into the container.
NOTE: It is usual for some oil to drain from the IDG
____ when you connect the hose.
EFFECTIVITYùùùùùùùùùùùùùùùùùùùùùùùùùùùùùù. ú
12-13-03
ALL ú ú 01 Page 314 ú May 28/00
BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
A
757 MAINTENANCE MANUAL
6) Remove the cover from the pressure fill valve. 7) Connect the pressure fill hose with its fitting (3/8 ozone).
CAUTION: WHEN YOU FILL THE IDG WITH OIL, YOU MUST NOT MIX
_______ TYPES OF OIL. IF YOU MIX THE OILS, YOU CAN CAUSE DAMAGE TO THE IDG.
8) Use the pump on the oil service equipment to fill the IDG with oil.
NOTE: When you start to put oil into the IDG, oil could
____ flow from the overflow drain hose. This does not show that the IDG is full.
9) Stop pumping oil into the IDG when approximately 1 quart of oil flows out of the overfill drain into the container.
NOTE: The approximately one quart of oil (including the
____ small amount that may have drained when you connected the overflow drain hose) overflow ensures that the IDG oil level is correct.
10) Disconnect the hose on the oil service equipment from the IDG pressure fill coupling. 11) Install the cover on the pressure fill coupling.
CAUTION: DO NOT REMOVE THE OVERFLOW DRAIN HOSE FROM THE IDG
_______ UNTIL TWO MINUTES AFTER THE OIL FLOW HAS DECREASED TO DROPS. FAILURE TO DRAIN THE IDG CORRECTLY WILL CAUSE TOO MUCH OIL IN THE IDG. THIS CONDITION WILL CAUSE AN IMMEDIATE OVERHEAT CONDITION AND CAUSE DAMAGE TO THE IDG.
12) When the oil from the overflow drain hose decreases to a drop, wait two minutes then remove the overflow drain hose. 13) Install the cover on the IDG overflow drain coupling.
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