How does the end float of a crankshaft work?

How does the end float of a crankshaft work?

Result = no movement and no end float measurable. I would have imagined that there must be some kind of interference fit between the crankshaft and the inner race of the bearings to avoid the shaft spinning in the bearing. So how do you get it to slide back and forth and measure 4 to 6 thou?

Is it common to have excessive crank endfloat?

Thats a question and a half is that! Excessive crank endfloat is not a common failing in my world these days (vauxhall workshops)however we did have a few cases back in the day… I would say that the cause will not normally be easy to identify if its manufacturing defect as there would be so much wear and damage done.

Why is there a noise at the end of the crankshaft?

This noise was not there when I set off so it seems to suggest massive crankshaft end float. Will take the alternator stator off and see if there is any obvious play in the crankshaft. Has anyone come across this before and can shed some light on what is going on?

What causes extra wear on the crank end?

So if there is a sustained load on the crank end for example from a faulty clutch or a miss aligned con rod etc this may cause extra wear? You should use a dial gauge on the end of the crank and lever it back then forward to get a reading,i think about 10 thou is a maximum?

How do you measure the end float of a crankshaft?

In order to measure the crankshaft end float the wise words say that you should assemble the cases (with the crank in – obviously) and measure the end float, which should be shimmed to be between 4 and 6 thou. Simples! However, this assumes that the crankshaft slides easily back and forth within the three inner bearing races.

Why does the crankshaft end float on a Norton?

Stripped it this morning and found that the alternator rotor and locking nut have been fouling the chaincase cover – see photos attached. This noise was not there when I set off so it seems to suggest massive crankshaft end float. Will take the alternator stator off and see if there is any obvious play in the crankshaft.

What’s the hot start button on a XT500?

If the bike is real hot there’s a small hot start button on the idle adjustment. Push it up only if the bike won’t start without it. 3. Holding the compression release lever in, crank the bike slowly until the shiny flag shows in the window on the camshaft cover. This position is the start of the POWER STROKE.

Thats a question and a half is that! Excessive crank endfloat is not a common failing in my world these days (vauxhall workshops)however we did have a few cases back in the day… I would say that the cause will not normally be easy to identify if its manufacturing defect as there would be so much wear and damage done.