S 022-003-B00
(2)
Remove the bolts that attach the outboard and the inboard bolt retainers to the structure (Fig. 201).
(a) Remove the bolt retainers.
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ALL ú ú B01 Page 201 ú Mar 15/94
BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
A
737-300/400/500MAINTENANCE MANUAL
WINGUPPER LINK
FUSE PIN NACELLE STRUT
FWD ENGINE MOUNT STRUT TO WING
SEE A AFT ENGINE MOUNT DIAGONAL BRACE ISOLATION DAMPER
VIBRATION VIBRATION
ISOLATOR ISOLATOR
4
CROSS BEAM
BOLT RETAINER
FASTENERS
FASTENERS
3 BOLT BOLT
BOLT 1 WASHERS (2) 1 WASHERS (2) RETAINER
CROSSBEAM CROSSPIN
NUT NUT
BRACKET2 NUT
REAR VIEW
A
1 POSITION WASHER COUNTERSINK 3 ENGINES WITHOUT VIBRATION ISOLATORS TOWARD BOLT HEAD
4 ENGINES WITH VIBRATION ISOLATORS 2
POSITION BRACKET AND NUT
ON FRONT OF CROSSBEAM
Forward Engine Mount Installation
Figure 201
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54-42-12
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BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
A 737-300/400/500MAINTENANCE MANUAL
5
BRACKET
CROSS PIN
CROSSBEAM
ALLOWABLE FORE AND AFT FREEPLAY IN THE LEFT CROSSBEAM TO FITTING JOINT IS 0.002 TO 0.014 INCHES.
Forward Engine Mount Wear Limits Figure 202 (Sheet 1)
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ú ú B01 Page 203 ú Jul 12/00
BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
A 737-300/400/500MAINTENANCE MANUAL
NO. INDEX 1 PART NAME BUSHING FITTING OD ID DIM. 0.8763 0.8750 0.8770 0.8757 MINIMUM DESIGN LIMITS MAXIMUM DIAMETER 0.8757 0.8763 WEAR LIMITS PERMITTED WEAR DIM. 0.0000 CLEARANCE MAXIMUM DIA. X WORN REPLACE PART 3 REPAIR WORN PART INSTR. REPAIR
2 BOLT BUSHING OD ID 0.7480 0.7495 0.7490 0.7505 0.7463 0.7522 0.0042 X X 2
3 CROSSBEAM BUSHING OD ID 0.8763 0.8750 0.8770 0.8757 0.8757 0.8763 0.0000 X 3
4 BOLTBUSHING OD ID 0.7495 0.7480 0.7490 0.7505 0.7463 0.7522 0.0042 X X 2
5 CROSSBEAM BUSHING OD ID 2.1250 2.1268 2.1259 2.1277 2.1268 2.1259 0.0000 X 3
6 CROSS PINBUSHING OD ID 1.9987 2.0000 1.9995 2.0007 1.9959 2.0035 0.0048 X 2
7 BEARING CROSSBEAM OD ID 1.4370 1.4375 1.4375 1.4380 ------ 0.0020 ---X
8 BEARING BALL BEARING RACE OD ID 1.1865 1.1880 1.1870 1.1885 ---1.1915 AXIAL 0.0080 4 X X
9 BOLT BEARING BALL OD ID 0.7495 0.7480 0.7490 0.7500 0.7463 0.7517 4 X X 2
MAXIMUM 0.0060 RADIAL CLEARANCE FOR COMBINED RACE TO BALL AND BALL TO BOLT.
2 WORN PART IS REPAIRABLE. REFER TO OVERHAUL MANUAL FOR REPAIR INSTRUCTIONS. 3 MAXIMUM 0.060 INCREASE IN ID TO ALLOW FOR OVERSIZE BUSHING.
Forward Engine Mount Wear Limits
Figure 202 (Sheet 2)
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54-42-12
ú ú B01 Page 204 ú Mar 12/00
BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
A 737-300/400/500MAINTENANCE MANUAL
ALLOWABLE FORE AND AFT FREEPLAY IN THE LEFT CROSSBEAM TO FITTING JOINT IS 0.002 TO 0.014 INCHES.
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