Technical Squealing Startup Noise

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Technical Squealing Startup Noise

I've greased the shaft as I'd call it and it turns relatively easily clockwise as i'm looking at it, but its much harder to turn anti-clockwise.

I can see some grease between the larger metal part upon which my screwdriver is sat in the picture above and the casing, so i'm wondering if i should put any grease in there.


View attachment 476769
Excellent

The stiff way

Push it with screw driver and the Bendix gear should rise

Might need some brake cleaner first to free it up



Best I could find sat here in Asda cafe, but you can see how freely it's supposed to rise
 
Seems to work on some kind of spring mechanism and it won't stay in the up position.


View attachment 476771
Yes that correct
Should be able to raise and lower fairly easily
It been about 5 years since I did mine
Memory is a foggy
But it was night and day between before and after

Pretty sure I could raise and lower the gear just by spinning the gear by fingers alone when done

@irc can you confirm
 
I've greased the shaft as I'd call it and it turns relatively easily clockwise as i'm looking at it, but its much harder to turn anti-clockwise.

I can see some grease between the larger metal part upon which my screwdriver is sat in the picture above and the casing, so i'm wondering if i should put any grease in there.


View attachment 476769
Inside the "large metal part" is the freewheel mechanism. That's what makes it easier to turn the pinion one way but not the other. Basically tuning it the "easy" way is turning the pinion gear only - look at the shaft and you'll see it's not turning. Turning it the hard way is turning not just the gear but also the entire armature assembly. So will be much harder to do.

The freewheel is there to avoid over revving the armature once the engine starts and before you release the key back into the running position -which allows the pinion gear to retract again. I wouldn't grease the freewheel as it just might encourage it to slip when it should be transmitting drive.
 
Yes that correct
Should be able to raise and lower fairly easily
It been about 5 years since I did mine
Memory is a foggy
But it was night and day between before and after

Pretty sure I could raise and lower the gear just by spinning the gear by fingers alone when done

@irc can you confirm
There was some dirt on it mixed with the grease, kind of thick gritty, muddy, removing that and putting fresh grease on will help.

And it now raises and lowers whether or not it did before.

My mechanicing skills have improved since I put this starter on, so its possible i didn't do something quite right last time...apart from breaking the electrode :)

Will see tomorrow.
 
Inside the "large metal part" is the freewheel mechanism. That's what makes it easier to turn the pinion one way but not the other. Basically tuning it the "easy" way is turning the pinion gear only - look at the shaft and you'll see it's not turning. Turning it the hard way is turning not just the gear but also the entire armature assembly. So will be much harder to do.

The freewheel is there to avoid over revving the armature once the engine starts and before you release the key back into the running position -which allows the pinion gear to retract again. I wouldn't grease the freewheel as it just might encourage it to slip when it should be transmitting drive.
Righto, i'll leave that alone, its too dark to do anything now so i'll crack on tomorrow :)
 
Was it definitely the starter? I had a squeal on startup caused by a rusted alternator stator gradually seizing the rotor. Check the alternator casing for cracks.
I have found soaking both ends of the alternator repeatedly with WD and light spray oil will eventually sort this with perseverance. The low mounted alternator will take a bath in a 6 in deep flood. A regular spray is probably a good preventive idea.
 
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