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driving shaft, propeller shaft, Cardan shaft
to make the head not loose put a wine cork in the shaft and screw through that to keep ypur head in place
if the shaft is loose in the distributor, you either need to rebuild or replace distributor.if distributor itself is loose there is a bolt at the base of the distributor that holds it in place
no it will slow it down
How do I know if a shaft is bad on a Ford
yes. put the bolts in. Are you trying to sabatoge someones car?
Universal Joints (U-Joints) can wear out.
its loose tighten the pulley
If you meant "Why is there a vibration, or vibration like sound when I'm driving" it is because either the drive-shaft is dented or one of the balancing weights is removed. Or basically it is not balanced, therefore vibration occurs.
use impact gun
A keyed shaft or Keyway is method, based on a machined keyway in shaft, to attach something to the shaft and associated bore. A fitted key is inserted into a slot that is machined into the shaft. Although a machined keyway does result in a weaker shaft, it has it's applications. As in a lawn mower engine shaft. Theoretically the key will give way and save the shaft if you hit something with the blade. The negatives of a keyed shaft are that it can be deformed over time and result is a loose drive.
Check under the cap where the wiper arm bolts to the shaft, as the nut could be loose. It the nut is tight, then remove the cowling. The wiper shaft arms are under the cowling and they are either loose or broken.