we also remove the "basket" and the driven disk when replacing the flywheel and rear crankshaft oil seal.
To remove the "basket" and the driven clutch disc, dismantle the gearbox (see Removal the gearbox).
Using an 11 mm socket head, unscrew the six bolts securing the clutch housing to the flywheel.
We hold the crankshaft from turning with a screwdriver inserted between the teeth of the flywheel and resting on a bolt screwed into the hole in the oil pan.
We unscrew the bolts evenly, no more than one turn each, so as not to deform the clutch housing.
We remove the "basket" and the driven clutch disc.
Installing the clutch…
…we orient the driven disk with the protruding part of the hub towards the "basket" and insert the centering mandrel into the hole in the driven disk.
The mandrel can be made independently by assembling it from two tool heads with suitable diameters and lengths.
Centering mandrel.
We insert the mandrel into the hole of the crankshaft and in this position we fix the clutch housing evenly (one revolution per pass) tightening the bolts.
Having secured the clutch housing, we remove the centering mandrel and mount the gearbox (see Removal the gearbox).
(The original source of the article is the website CHEVYMAN)