323 L4-1600 1597cc (1986)
Synchronizer Hub: Technical Service Bulletins
Synchronizer Key - Revised
Category
Applicable Model/s
Subject
Bulletin No. 014/85
7
1985 GLC
SYNCHRONIZER KEY
Issued
11/27/85
1986 323
Revised
SYNCHRONIZER KEY
DESCRIPTION
The configuration of the synchronizer keys on the fifth and reverse gear clutch hub have been changed in order to provide a smoother shift into fifth gear
at high speed.
When assembling the clutch hub for fifth and reverse gear, the larger end of the synchronizer key must face the lock nut.
NOTE:
Larger end must face lock nut.
VIN OF PRODUCTION CHANGE
GLC 4-Door Sedan:
JM1BD221 F0821172
April, 1985
3-Door Hatchback:
JM1BD231 F0819692
April, 1985
5-Door Hatchback:
JM1BD241 F0800700
April, 1985
PART NUMBER
DESCRIPTION
INTERCHANGEABILITY
NEW
OLD
F501 17 243
F401 17 243A
Synchronizer Key
NEW --> OLD
Synchronizer Keys Configuration
NOTE:
The synchronizer keys for the first and second gear clutch hub have a different configuration than those for the third and fourth gear clutch hub. In order
to prevent incorrect assembly, the configuration of all three types of synchronizer keys are shown below.
SYNCHRONIZER KEY CLUTCH HUB
A
B
C
F401 17 263A
1st & 2nd
19 mm
4.25 mm
4.25 mm
F401 17 243A
3rd & 4th
17 mm
4.25 mm
4.25 mm
F501 17 243
5th & Rev.
17 mm
4.25 mm
5.55 mm
