Synchronizers

Synchronizers

Synchronizers:

Disassembly

NOTE: This procedure applies to all synchronizer assemblies.

1. NOTE: During disassembly, mark each individual synchronizer for assembly. Synchronizer hubs and sleeves should be kept together as originally assembled.

Scribe an index mark on the sliding sleeve to the hub for assembly reference.
2. Remove the synchronizer spring. Turn the synchronizer over and remove the 2nd spring. Remove the sliding sleeve and the synchronizer keys from the hub.
3. Inspect the synchronizer components.
^ Check for worn, nicked or broken teeth.
^ Install a new synchronizer as necessary.
^ Check keys for wear or distortion. Install a new synchronizer as necessary.
^ Check springs for distortion. Install a new synchronizer as necessary.

4. Inspect the synchronizer blocking rings.
^ Check for wear or damage. Install new synchronizer blocking rings as necessary.

Assembly

1. CAUTION: Match the index marks made during disassembly. The sleeve and the hub have an extremely close fit. Hold the sleeve and hub square to prevent jamming. Do not force the sleeve onto the hub or damage to the components may occur.

Assemble the synchronizer as follows:
^ Position the synchronizer sleeve on the hub. Make sure to align key openings in the hub with the synchronizer sleeve.
^ Install the keys with the slots facing the hub.
^ Install the spring. Locate the tang to one of the key slots and position into place. Holding the sleeve and hub, turn the assembly over and install the second spring. Locate the spring tang on a key 120 degrees from the first spring.