EFFECTIVITYùùùùùùùùùùùùùùùùùùùùùùùùùùùùùù. ú
71-21-00
ALL ú ú N01 Page 604 ú Feb 10/89
BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
NO. INDEX PART NAME DIM. DESIGN LIMITS WEAR LIMITS WORN PART REPLACE PART WORN REPAIR INSTR. REPAIR
DIAMETER PER-MITTED DIM. WEAR MAX ANCE CLEAR-DIAM
MIN MAX
1 HOUSING ID 3.1875 3.1885 3.1890 0.0000 X
BEARING RACE OD 3.1890 3.1900 3.1885 X
2 BEARING RACE ID 2.8765 2.8775 2.8809 0.0060 1 X
BEARING BALL OD 2.8735 2.8745 -- X
3 BEARING BALL ID 1.9992 2.0000 2.0028 0.0060 1 X
FITTING OD 1.9967 1.9973 1.9939 X 2
4 EVENER BAR ID 1.5625 1.5633 1.5643 0.0000 3
BUSHING OD 1.5643 1.5652 1.5633 X
5 FITTING ID 1.2495 1.2505 1.2527 0.0047 4
SHEAR PIN OD 1.2480 1.2485 1.2458 X 5
6 BUSHING ID 1.3745 1.3755 1.3778 0.0053 X
BOLT OD 1.3725 1.3740 1.3702 X 5
7 EVENER BAR ID 1.7500 1.7510 -- 0.0020 --
BEARING RACE OD 1.7495 1.7500 -- X
8 BEARING RACE ID 1.5010 1.5015 1.5040 0.0060 RADIAL X
BEARING BALL OD 1.4995 1.5000 -- X
9 BEARING BALL ID 0.9995 1.0000 1.0020 0.0040 6 X
BOLT OD 0.9980 0.9990 0.9960 X 5
10 THRUST LINK ID 1.1875 1.1882 1.1890 0.0000 3
BUSHING OD 1.1890 1.1898 1.1882 X
THE BALL TO BOLT AND THE BALL TO RACE MAXIMUM CLEARANCE IS 0.0060 (RADIAL) PLUS 0.0080 (AXIAL)
USE BAC 5709 CLASS 4
A MAXIMUM INCREASE OF 0.0060 ON THE INSIDE DIAMETER IS PERMITTED FOR LARGE BUSHINGS.
NO REPAIR IS PERMITTED
STRIP (F-15.03), PLATE AND POST-PLATE GRIND TO AGREE WITH THE DESIGN LIMIT. AFTER THE PART IS
GROUND, THE THICKNESS OF ONE PLATE SHOULD BE 0.0020.
THE PIN TO BALL AND THE BALL TO RACE MAXIMUM CLEARANCE IS 0.0060 (RADIAL) PLUS 0.0080 (AXIAL)
Engine Mount Wear Limits
Figure 601 (Sheet 4)
EFFECTIVITYùùùùùùùùùùùùùùùùùùùùùùùùùùùùùù. ú
71-21-00
ALL ú ú N01 Page 605 ú Jun 10/90
BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.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 PER-DIM. WEAR MITTED DIAM CLEAR-ANCE MAX
MIN MAX
11 BUSHING ID 0.9995 1.0003 1.0023 0.0043 X
BOLT OD 0.9980 0.9990 0.9960 X 5
12 THRUST LINK ID 1.7500 1.7510 -- --
BEARING RACE OD 1.7495 1.7500 -- X
13 BEARING RACE ID 1.5010 1.5015 1.5040 0.0045 6 X
BEARING BALL OD 1.4995 1.5000 -- X
14 BEARING BALL ID 0.9995 1.0000 1.0020 0.0040 6 X
BOLT OD 0.9980 0.9990 0.9960 X 5
15 HANGER ID 0.7500 0.7510 0.7527 0.0072 X
SHEAR PIN OD 0.7455 0.7460 0.7438 X 5
16 LINK ID 2.2495 2.2500 -- 0.0020 --
BEARING RACE OD 2.2495 2.2500 -- X
17 BEARING RACE ID 2.0010 2.0015 2.0043 0.0048 6 X
BEARING BALL OD 1.9995 2.0000 -- X 5
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