(e)
Remove the filter cover (13).
1) Discard the packing (6).
(f)
Remove the main oil filter (2) from the filter housing (1). 1) Discard the main oil filter (2).
(g)
Remove spring (3) from cover (13). 1) Remove the screw (4) which attaches the key washer (5) to
the cover.
2) Discard the key washer (5).
S 024-052-N00
(4)
ENGINES POST-PW-SB 72-524 AND PRE-PW-SB 79-79; do the steps that follow (Fig. 401, View C):
(a)
Hold the insert (8) in position with a wrench on the flats to remove the drain plug (10).
(b)
Remove the drain plug (10) with the wrench.
1) Discard the packing (9) on the drain plug (10).
(c)
Permit the housing of the main oil filter to drain.
WARNING:_______A TENSION FROM A SPRING IS ON THE FILTER COVER. HOLD THE FILTER COVER WITH YOUR HAND TO MAKE SURE THE FILTER COVER DOES NOT EJECT WHEN YOU REMOVE THE BOLTS.
(d)
While you hold the filter cover in position with your hand, remove the lockwire, nuts (14), and washers (12) which attach the filter cover (13). 1) If self-locking nuts were used, discard them.
(e)
Remove the filter cover (13).
1) Discard the packing (6).
(f)
Remove the main oil filter (2) from the filter housing (1). 1) Discard the main oil filter (2).
(g)
Remove spring (3) from cover (13). 1) Remove the screw (4) which attaches the key washer (5) to
the cover (13).
2) Discard the key washer (5).
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79-21-05
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BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
(h) Do a check of the studs installed in the main oil filter housing (Fig. 401, View I). 1) If the studs are not acceptable, remove and replace the
main oil filter housing (AMM 72-61-11/401).
S 024-053-N00
(5) ENGINES POST-PW-SB 72-524 AND POST-PW-SB 79-79; do the steps that follow (Fig. 401, View E):
(a)
Hold the insert (8) in position with a wrench on the flats to remove the drain plug (10).
(b)
Remove the drain plug (10) with the wrench.
1) Discard the packing (9) on the drain plug (10).
(c)
Permit the housing of the main oil filter to drain.
WARNING:_______A TENSION FROM A SPRING IS ON THE FILTER COVER. HOLD THE FILTER COVER WITH YOUR HAND TO MAKE SURE THE FILTER COVER DOES NOT EJECT WHEN YOU REMOVE THE BOLTS.
(d)
While you hold the filter cover in position with your hand, remove the lockwire, nuts (14), and washers (12) which attach filter cover (18). 1) If self-locking nuts were used, discard them.
(e)
Remove the filter cover (18).
1) Discard the packing (6).
(f)
Remove the main oil filter (2) from the filter housing (1). 1) Discard the main oil filter (2).
(g)
Remove spring (3) from cover (18).
1) Remove the screws (15) and washers (17) which attach the spring retainer (16) to the cover (18).
(h)
Do a check of the studs installed in the main oil filter housing (Fig. 401, View I). 1) If the studs are not acceptable, remove and replace the
main oil filter housing (AMM 72-61-11/401).
S 024-054-N00
(6) ENGINES POST-PW-SB 72-525; do the steps that follow (Fig. 401, View G):
(a) Remove the drain plug (10) with the wrench. 1) Discard the packing (9) on the drain plug (10). 2) Permit the housing of the main oil filter to drain.
EFFECTIVITYùùùùùùùùùùùùùùùùùùùùùùùùùùùùùù. ú
79-21-05
ALL ú ú N01 Page 409 ú Jun 18/00
BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
////////////////////////A / PW4000 SERIES /747-400 / ENGINES/MAINTENANCE MANUAL ////////////////////////
WARNING:_______A TENSION FROM A SPRING IS ON THE FILTER COVER. HOLD THE FILTER COVER WITH YOUR HAND TO MAKE SURE THE FILTER COVER DOES NOT EJECT WHEN YOU REMOVE THE BOLTS.
(b) While you hold the filter cover in position with your hand, remove the four self-locking nuts (14) and washers (12) on the main oil filter cover assembly (13).
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