Caution: Read the precautions for removing and installing the coupling in this chapter.
1. Secure the coupling with a plastic clamp (1), if you have not done so already.
2. Wash the coupling with cleaning solvent.
3. Dry the coupling with compressed air.
4. Check the functionality of the return spring (1).
5. Check the coupling:
a) Correct positioning: the drive return spring must move the camshaft position sensor synchronizing ring to the PARK position. This position corresponds to the alignment of the mark (1) on the sprocket with the end of the cutout in the ring (2). If there is no alignment, the internal drive components are stuck or the return spring is broken. The clutch must be replaced as an assembly.
b) Burrs or damage to the edges (3) of the synchronizing ring.
c) Damage to the teeth (4) of the timing drive.
6. Check the cleanliness of the oil supply channels (1, 2, 3).
7. Check the timing chain tensioner, see above "Checking the chain and sprockets".
[The original article can be found on the resource: «chevyman.ru»]