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Need an opinion on a crank pulley drive

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Bill from Scot

01-28-2008 14:59:11

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Hi Guys
I have a badly stuck Massey 1155 V8 Perkins engine. I managed to get a good used one from a combine locally and intend changing the two over. Both engines are now out and sitting on my workshop floor beside the tractor. I have started to change over the simple things like oil pan, drive pulleys etc. My current problem lies with the bottom pulley attached to the end of the crank. The tractor has this attached by a splined mechanisim witha split cone and centre fixing bolt. This drives the water pump by vee belts. The hydrolic pump bolts onto the front of the crank with 4 fairly small bolts which is all fine.
The combine on the other hand has a different bottom pulley which is held with a woodrift key (fairly small) and three bolts into the end of the crank. I could have the combine pulley machined to provide drive to the hydrolic pump but it has been suggested that the three bolts and the woodrift key may not be capable of sustaining drive to the hydrolic pump. I will be using the tractor with a 4 furrow reversible plough (over one ton) mounted on the 3 pnt. I assume if the pump drive gives out then I lose brakes, 3 pnt and steering, not nice.
Anyway what are your thoughts? Has anyone had this problem in the past? Any ideas on how to overcome this other that striping both motors and changing the cranks over (lots of work).
Any ideas of thoughts appreciated.
Thnaks
Bill

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rrlund

01-30-2008 09:43:15

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Re: Need an opinion on a crank pulley drive in reply to Bill from Scotland, 01-28-2008 14:59:11

Bill,did you read my response on the Tractor Talk Board? I think it's on page 4 now. Can you have a round plate machined with three holes in it to go in to the 3/8s holes in that crank to hold those wedges in there? Unless I'm reading it wrong,you're just wanting to hold them in like the big flat washer did with the original one big bolt. Or am I reading it wrong? JSchweibert posted something on the Oliver board the other day. Said he came across an old bulletin that showed 150 different cranks for the 354 Perkins. Sounds like maybe there were a lot of different ones for the V8 too.

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Bill from Scotland

01-30-2008 15:08:21

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Re: Need an opinion on a crank pulley drive in reply to rrlund, 01-30-2008 09:43:15

Thanks for the reply. The problem I have is do you think the combine arrangment with a woodrift key and the three bolts are capable of holding the pulley in place to provide drive to the hydrolic pump. The combine pulley is quite different from the tractor one and has nothing at present to correct to the pump. If I thought the three bolts and key were up to the job as opposed to the splined arrangment on the original tractor set up then I would just try to have the pulley modified to accetpt the four bolts to take the pump. In other words I have two problems. 1 the differnt drive systems from the end of the crank 2. the combine pulley needs modifing to take the pump drive.
I know this is not eay to explain without actually seeing the problem but hopfully this will have helped.
Thanks for now Bill

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rrlund

02-01-2008 17:28:26

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Re: Need an opinion on a crank pulley drive in reply to Bill from Scotland, 01-30-2008 15:08:21

That should be a pretty good sized key isn't it? Doesn't the combine hydraulic pump run from a belt on the pulley too? If it runs it on one,you'd think it would run it on the other. Guess if I was going to try it,I'd make sure it was a good quality,new key.

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