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BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.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

EFFECTIVITYùùùùùùùùùùùùùùùùùùùùùùùùùùùùùù. ú

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BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.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BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.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)

EFFECTIVITYùùùùùùùùùùùùùùùùùùùùùùùùùùùùùù. AIRPLANES WITHOUT VIBRATION ISOLATORS ú

 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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