Synchronizer Key - Revised
Category Applicable Model/s Subject Bulletin No. 014/857 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