C58627
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ALL ú ú N01 Page 603 ú Oct 10/93
BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
////////////////////////A / PW4000 SERIES /747-400 / ENGINES /MAINTENANCE MANUAL ////////////////////////
INDEX NO. PART NAME DIM. DESIGN LIMITS WEAR LIMITS REPLACE PART WORN REPAIR WORN PART REPAIR INSTR
DIAMETER WEAR DIM. PER-MITTED CLEAR-ANCE MAX DIA
MIN MAX
1 HINGE ID 0.6251 0.6258 -- 0.0020 X
BEARING RACE OD 0.6245 0.6250 -- X 1
2 BEARING RACE ID 0.5010 0.5015 0.5045 0.0060 RADIAL X
SPHR BEARING OD 0.4995 0.5000 -- X
3 SPHR BEARING ID 0.2497 0.2502 0.2510 0.0080 AXIAL X
BOLT OD 0.2490 0.2496 0.2480 X
4 BUSHING ID 0.2500 0.2505 0.2520 0.0060 X X
BOLT OD 0.2485 0.2495 0.2475 X
5 FLG BUSHING ID 0.3750 0.3756 0.3770 0.0060 X
BUSHING OD 0.3740 0.3745 0.3725 X
6 HINGE FITTING ID 0.5000 0.5006 -- -0.0000 X 2
FLG BUSHING OD 0.5010 0.5016 -- X
7 BUSHING ID 0.2500 0.2505 0.2520 0.0030 X
BOLT OD 0.2485 0.2495 0.2475 X
8 HINGE FITTING ID 0.3750 0.3756 -- -0.0000 X 2
BUSHING OD 0.3759 0.3765 -- X
REMOVE FLANGE TO PRESS OUT BEARING RACE. 0.6880 MAX ID FOR REWORK. NO LOOSENESS IS PERMITTED AFTER SWAGING.
SHOP REPAIRABLE
Thrust Reverser Blocker Door Wear Limits
Figure 601 (Sheet 2)
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C61708
S 216-047-N00
WARNING:_______ DO NOT OPEN THE THRUST REVERSER HALVES TO DO THIS INSPECTION.
IF YOU DO, YOUR WEIGHT CAN CAUSE THE FAILURE OF THE HOLD-OPEN
ROD WHEN YOU GO INTO THE FAN COWL. THE THRUST REVERSER HALVES
WILL FALL TO THE CLOSED POSITION QUICKLY, WHICH CAN CAUSE
INJURY TO PERSONS AND DAMAGE TO EQUIPMENT.
(1) Go into the aft end of the fan cowl and examine each blocker door for too much play.
NOTE: Be careful when you get access to the blocker doors at the
____ top of the thrust reverser. Push on the opposite sides of the inner walls of the fan cowl with your hands and feet while you lift your body up. Do not pull on the drag links or you will cause damage to them.
S 216-048-N00
(2) With your hands, try to move the blocker door from side to side and forward to aft at the hinge fittings.
NOTE: Hold the blocker as close to the hinge fitting as possible.
____
S 216-054-N00
(3) If there is play in the blocker door
(a) Make a note of the blocker door location and continue the inspection.
S 986-052-N00
(4) Manually retract the thrust reverser to drop the blocker doors into the stowed position (AMM 78-31-00/201).
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BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
////////////////////////A / PW4000 SERIES /747-400 / ENGINES/MAINTENANCE MANUAL ////////////////////////
S 226-051-N00
(5) Examine each blocker door with play for too much clearance.
(a) Measure the clearance between the aft edge of the blocker door and the forward edge of the acoustic panel.
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