2. Insert each synchronizer hub (A) into its corresponding synchronizer race (B) and check that they rotate freely. Be sure to align the 3 pairs of longer teeth (C) (with a 120 degree shift) on the synchronizer sleeve with 3 deeper grooves (D) on the synchronizer hub. Do not insert the synchronizer sleeve with the long teeth into the recesses (E) on the 1st/2nd gear synchronizer hub, otherwise you will damage the snap ring.

Note: The synchronizer sleeve and hub must be replaced as a set.
