Splitting a 1290?

docmirror · Sep 21, 2017

How hard? Looking at one needs a clutch job. I have a lot of experience in cars/trucks, modest experience with tractors.

Have a shop with tools, air comp and one overhead winch. Mostly one person work.

4 hours, 7 hours, 12 hours?

RGMartin · Sep 21, 2017

If you have done one before it is a 4 hour job max if no loader and a 2 stage clutch.

Don't remove the PTO box, it just makes extra work. Don't remove the fuel tank to get the cast cover off the top of the clutch, it can all stay.

Split down the back of the engine, pull starter, rearward where the frame meets the iron clutch cover, then down again. Disconnect any lines, and wires.

If it has a hand PTO clutch it will take extra time as there is a bugger of a bolt that has to be removed through the split.

docmirror · Sep 21, 2017

Thanks. However, it has a loader. Sigh. Prolly add a couple hours to work around that.

Yikes, hope I don't need a pressure plate. Looks like +$800 for just that.

Eagle Doc · Sep 22, 2017

I have no experience with 90 series "David Brown" tractors so maybe you don't need to remove the PTO box. When I worked at the dealer we had a customer who replaced the clutch in his 1212. We loaned him the service manual and stressed removing the PTO but we could not convince him that it was needed. A few months later the thrust washers were worn out and the crankshaft and block were ruined.

RGMartin · Sep 22, 2017

(quoted from post at 08:02:22 09/22/17) I have no experience with 90 series "David Brown" tractors so maybe you don't need to remove the PTO box. When I worked at the dealer we had a customer who replaced the clutch in his 1212. We loaned him the service manual and stressed removing the PTO but we could not convince him that it was needed. A few months later the thrust washers were worn out and the crankshaft and block were ruined.

No reason to remove the PTO box on the bigger ones either, unless it has the reversible shaft PTO, then it can stay so long as you keep the PTO in gear.

What possible connection do the thrusts bearings have with the PTO box?

Thrusts and throwout can be worn from a miss adjusted clutch, or running with the PTO clutch disengaged.

Adirondack case guy · Sep 22, 2017

The guy ran the tractor with the pto clutch handle back, rather than putting the gear selector of the pto in neutral and then putting the clutch lever back in the forward/engaged position. When lever is back clutch fingers are depressed and spring pressure is exerted laterally to the engine crankshaft.
Loren

Eagle Doc · Sep 23, 2017

I don't want to sound like a smart a** but I'm pretty sure that is not what happened. Loren, my email is open (in classic view) and I would like you to email me so we can visit about this.
I usually use the classic view but I see some posts in the modern view that I don't see in classic view.

Splitting a 1290?

docmirror

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RGMartin

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docmirror

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Eagle Doc

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RGMartin

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Adirondack case guy

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Eagle Doc

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