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BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.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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BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.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)
EFFECTIVITYùùùùùùùùùùùùùùùùùùùùùùùùùùùùùù. AIRPLANES WITHOUT VIBRATION ISOLATORS ú

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BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.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