Crankshaft pulley locking tab

[Bensdexta]

You could try a speedy sleeve.

Henk,
Sounds good
Many thanks for your suggestion.
Has anyone tried these?
Where can you get them in UK?
All the best,

[pjjms]

Speedi sleeves work very well. Have used them in the past with good results. Try your local bearing supplier. They do cost a bit though. The last one I purchased was for a Dexta rear axle and cost NZD80 (25-30 ponds).

[Jerry Coles]

Ben
Do my eyes deceive me or is that a crack adjacent to the keyway?
Jerry

[Bensdexta]

Do my eyes deceive me or is that a crack adjacent to the keyway?

Jerry,
Good observation - Yes it is a hairline crack
I hadn't noticed it. Shows the value of the internet & digital cameras!
The crack is about 3/4" long and penetrates through to the keyway slot.
Does it matter? There should not be a huge load on the pulley, when in use. However, I can feel the crack with my finger, so it is likely to wear the seal quicker. Perhaps another reason for a Speedi-Sleeve?

Have you managed to find another pulley for your spare engine?

[Jerry Coles]

There is a lot of side load from the belt tension so you may find it has occured due to these stresses and may result in a catastrophic failure later.
Probably best to get it ground out and welded up IMHO.
It may also have been caused by a bad fitting when it was put on the crankshaft - look at the woodruff key.
I'm currently rebuilding a short engine from Agriline and that crankshaft has a long key rather than a woodruff key.
Had to buy some key steel at the exhorbitant cost of £1.00 for 12" so if you want some let me know.
regards
Jerry

[Bensdexta]

I just bought a good pulley with no cracks or wear marks from Malcolm Hipperson. Cost £10.

I was about to get my old pulley welded and fitted with a speedi-sleeve from this Co, who are very helpful:
www.bearingsandmore-Oxfordshire.co.uk

However Malcolm's pulley is cheaper!

I'm wondering if the 'spanner' I bolted to the pulley to undo the pulley nut puts an undue load on the keyway, which is clearly a weak point of the pulley. Maybe locking the crankshaft another way, such as putting the tractor in gear would be kinder on the pulley when doing up the nut?