Zf part 1269328254 Synchronizer Ring for Ecosplit Transmission Genuine Heavy-Duty Spare

Simple Install Tips

For professional installation of the Zf 1269328254, follow these technical recommendations to prevent premature failure:

1. The “Gap” Test: Before assembly, place the ring on the gear cone and measure the clearance (Value A) using a feeler gauge. If the clearance is below the ZF-specified wear limit (typically < 0.8мм), synchronization will fail.

2. Oil Immersion: Never install a synchronizer ring dry. Soak the ring in the approved ZF-Ecofluid M or recommended gear oil for at least 20 minutes before fitting to ensure the friction lining is fully lubricated.

3. Inspect the Taper: Check the mating gear taper for “glazing” or blue heat spots. If the gear taper is too smooth or damaged, the new 1269328254 ring will not be able to create enough friction to stop the gear.

4. Keyway Alignment: Ensure the three notches on the outer diameter of the ring align perfectly with the synchronizer keys (struts) in the hub. Misalignment during pressing will crack the ring.

5. Clean Environment: Ensure the gearbox housing is free of metal shavings. Small particles can embed themselves in the synchronizer’s friction material, leading to rapid wear and “notchy” shifting.