ZF Part 1269328291 Synchronizer Ring for Ecosplit Transmissions Genuine Gearbox Spare Part

Simple Install Tips

To ensure the successful replacement of your ZF 1269328291 Anneau de synchronisation, follow these professional maintenance tips:

1. Measure the Wear Gap (A-Value): Before assembly, place the new ring on the gear cone and measure the clearance (gap) using a feeler gauge. If the gap is below 0.8mm (or the specific ZF model limit), the gear cone itself is likely worn and should be replaced.

2. Oil Pre-Soak: Never install a synchronizer ring “dry.” Immerse the 1269328291 in the approved transmission lubricant (par ex., ZF-Ecofluid M) for at least 20 minutes before installation to prime the friction surface.

3. Inspect Mating Surfaces: Check the gear’s cone surface for glazing, “blueing” from heat, or metal scoring. A damaged gear cone will destroy a new synchronizer ring within a few miles of driving.

4. Align Pressure Pieces: During installation into the synchronizer hub, ensure the three lugs (notches) on the ring are perfectly centered with the synchronizer keys (pièces de pression). Misalignment will prevent the gearbox from shifting into gear.

5. Propreté: Clean the entire synchronizer assembly with a lint-free cloth and specialized cleaner. Even a small piece of metal debris embedded in the friction lining can cause shifting issues.