Removing rivetted crankshaft pulley
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- Minor Fan
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Removing rivetted crankshaft pulley
Any advise on removing the pulley, I have undone the nut but the pulley refuses to budge, I have tried levering it off and also using a 2 leg puller but it will not move. It is the rivetted type and will have to be replaced because with all my failed efforts it is now distorted.
Leo 69 Traveller
Leo 69 Traveller
It usually just more or less falls off. You will need to use two tyre levers against the rim, at 180 degrees - braced against the timing case cover which you should protect with flat sections of timber. In extremis - I suppose you may have to apply some heat - in which case make there is no petrol about - and you will have to renew the timing case oil seal - but it should be replaced anyway if you disturb the pulley.
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Sometimes they come off easy and sometimes they don't. I've had to resort to using the crowbar on one, but don't lever on the timing case cover unless you want to mash it up!
Ray. MMOC#47368. Forum moderator.
Jan 06: The Minor SII Africa adventure: http://www.minor-detour.com
Oct 06: back from Dresden with my Trabant 601 Kombi
Jan 07: back from a month thru North Africa (via Timbuktu) in a S3 Landy
June 07 - back from Zwickau Trabi Treffen
Aug 07 & Aug 08 - back from the Lands End to Orkney in 71 pickup
Sept 2010 - finally gave up breaking down in a SII Landy...
where to break down next?
2013... managed to seize my 1275 just by driving it round the block
Jan 06: The Minor SII Africa adventure: http://www.minor-detour.com
Oct 06: back from Dresden with my Trabant 601 Kombi
Jan 07: back from a month thru North Africa (via Timbuktu) in a S3 Landy
June 07 - back from Zwickau Trabi Treffen
Aug 07 & Aug 08 - back from the Lands End to Orkney in 71 pickup
Sept 2010 - finally gave up breaking down in a SII Landy...
where to break down next?
2013... managed to seize my 1275 just by driving it round the block
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- Minor Fan
- Posts: 189
- Joined: Wed Dec 19, 2007 11:50 am
- Location: South Oxfordshire
- MMOC Member: No
For a while I was thinking it had never happened to anyone else.
This all started out as a fairly simple job to renew a rattling timing chain
It is well and truly stuck, I have ground off the rivets and removed what was left ot the the pressed steel pulley. Now all is left is the casting.
My aim is to get it off without damage to the timing cover.
Heat and a purpose made puller is the next stage, will keep you informed.
Thanks for your advice
Leo
This all started out as a fairly simple job to renew a rattling timing chain
It is well and truly stuck, I have ground off the rivets and removed what was left ot the the pressed steel pulley. Now all is left is the casting.
My aim is to get it off without damage to the timing cover.
Heat and a purpose made puller is the next stage, will keep you informed.
Thanks for your advice
Leo
Hi
I had the same problem removing what was left of my pulley after it decided to seperate while i was out in the car. Anyway some bright spark had for some reason welded the rivets together then used clear mastic (and the bolt) to attatch the pulley to the crank. The only way to remove it was to remove what was left of the pulley as you have done and then use a 3 legged puller and a blowtorch (taking care not to destroy the oil seal in the timing chain cover) to remove the rest of the pulley, a 2 legged puller wont work very well as they tend to twist and dont pull straight. The only other thing i had to do was to remove the front panel as my puller was too long.
Good luck
Mark
I had the same problem removing what was left of my pulley after it decided to seperate while i was out in the car. Anyway some bright spark had for some reason welded the rivets together then used clear mastic (and the bolt) to attatch the pulley to the crank. The only way to remove it was to remove what was left of the pulley as you have done and then use a 3 legged puller and a blowtorch (taking care not to destroy the oil seal in the timing chain cover) to remove the rest of the pulley, a 2 legged puller wont work very well as they tend to twist and dont pull straight. The only other thing i had to do was to remove the front panel as my puller was too long.
Good luck
Mark
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- Minor Fan
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Mark
I have now tried heat and two legged puller on the flange without success. Not worried about the oil seal as that will be renewed along with the timing chain if I ever get there.
I applied plenty of heat to the flange, the oil was bubbling between the crank and the flange and all kinds of burning smells and yet it still will not budge.
I will take your advice and try a three legged puller and probably have to take the grill assembly off because as you say there is not that much clearance.
Could it be possible that shocking the Starter Dog Nut off has move the Pulley on the crankshaft and somehow caused it to jam?
Leo
I have now tried heat and two legged puller on the flange without success. Not worried about the oil seal as that will be renewed along with the timing chain if I ever get there.
I applied plenty of heat to the flange, the oil was bubbling between the crank and the flange and all kinds of burning smells and yet it still will not budge.
I will take your advice and try a three legged puller and probably have to take the grill assembly off because as you say there is not that much clearance.
Could it be possible that shocking the Starter Dog Nut off has move the Pulley on the crankshaft and somehow caused it to jam?
Leo
As other have said, sometimes they fall off, and at other times it's damn hard work, as you've found. If drilling, take special care to not damage the woodruff key itself. I might be tempted to drill on the opposite side, just a couple of small holes in line to relieve the tightness, and then you still have th option of joining them up with a chisel to split the casting - just try not to drive it even further onto the shaft! Unfortunately you definitely need good access. Best of luck.
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- Minor Fan
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Managed to get another couple of hours in today.
The front of the car is now removed to provide better access.
I have drilled into the flange just above the slot.
The gas torch was playing up, probably because of the cold so I had to abandon heating it today.
The angle grinder method sounds interesting, did think about removing the flange with a grinder, then removing the timing cover leaving the remainder of pulley to be carefully ground and chiselled off.
First of all I will try heating it up once more.
[img]ttp://i160.photobucket.com/albums/t170/lwg_photo/005-2.jpg[/img]
The front of the car is now removed to provide better access.
I have drilled into the flange just above the slot.
The gas torch was playing up, probably because of the cold so I had to abandon heating it today.
The angle grinder method sounds interesting, did think about removing the flange with a grinder, then removing the timing cover leaving the remainder of pulley to be carefully ground and chiselled off.
First of all I will try heating it up once more.
[img]ttp://i160.photobucket.com/albums/t170/lwg_photo/005-2.jpg[/img]
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- Moderator
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If the dog was very stuck, it's possible that the crank end has distorted but it's more likely that it's just rusted on a bit.Could it be possible that shocking the Starter Dog Nut off has move the Pulley on the crankshaft and somehow caused it to jam?
For removing things like nuts with the angle grinder I have done like one of the recomendations and ground a flat on one side so it can split (often they will split themselves due to being so tight.
However the crank pulley goes through inside the timing cover so you can't get it all with the grinder unless the cover is off Therefore if you get it to split, you'll only split the outer end. This may be enough to get it free but won't be as good as splitting the whole thing.
I've had to use the angle grinder to remove front disks (2 x Fiestas and 1 x Transit). Cutting a slot in the disk part right down to the inner on opposing sides - then get a chisel into the slot. I've got a bolster chisel about 1mm bigger than the slot which works perfectly. A normal cold chisel could be less effective as the angle will stop it going right into the slot.
Usually this will split with a 'crack' and the 2 bits fall off. If all else fails I'd be tempted to do that.
Ray. MMOC#47368. Forum moderator.
Jan 06: The Minor SII Africa adventure: http://www.minor-detour.com
Oct 06: back from Dresden with my Trabant 601 Kombi
Jan 07: back from a month thru North Africa (via Timbuktu) in a S3 Landy
June 07 - back from Zwickau Trabi Treffen
Aug 07 & Aug 08 - back from the Lands End to Orkney in 71 pickup
Sept 2010 - finally gave up breaking down in a SII Landy...
where to break down next?
2013... managed to seize my 1275 just by driving it round the block
Jan 06: The Minor SII Africa adventure: http://www.minor-detour.com
Oct 06: back from Dresden with my Trabant 601 Kombi
Jan 07: back from a month thru North Africa (via Timbuktu) in a S3 Landy
June 07 - back from Zwickau Trabi Treffen
Aug 07 & Aug 08 - back from the Lands End to Orkney in 71 pickup
Sept 2010 - finally gave up breaking down in a SII Landy...
where to break down next?
2013... managed to seize my 1275 just by driving it round the block
-
- Minor Fan
- Posts: 189
- Joined: Wed Dec 19, 2007 11:50 am
- Location: South Oxfordshire
- MMOC Member: No
Got it off in the end
Drilled as many holes as I could, then applied plenty of heat while protecting the timing case with sheet metal. It came off using my purpose made puller. Only damage seems to be a hole drilled through the oil thrower washer.
It looks like corrosion may have been the problem, there are some signs of it on the inside of the flange. I think that hole drilled just above the slot done the trick.
Many thanks to all of you for your helpful advice, I must admit there was a time I thought it would never come off.
Only one more question (I hope) do I replace the pulley with a pressed steel one as original or use a later solid one. I prefer to keep things as original if possible but have read that the solid one is best.
Drilled as many holes as I could, then applied plenty of heat while protecting the timing case with sheet metal. It came off using my purpose made puller. Only damage seems to be a hole drilled through the oil thrower washer.
It looks like corrosion may have been the problem, there are some signs of it on the inside of the flange. I think that hole drilled just above the slot done the trick.
Many thanks to all of you for your helpful advice, I must admit there was a time I thought it would never come off.
Only one more question (I hope) do I replace the pulley with a pressed steel one as original or use a later solid one. I prefer to keep things as original if possible but have read that the solid one is best.