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Crawlers, Dozers, Loaders & Backhoes Discussion Forum

Re: Rough idle after roosa master DB reseal, case 207D LJD??

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04-14-2012 18:41:53

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Was new retainer timing line marked at correct location on degree tool per spec sheet, if off 1 degree will be 2 at crankshaft. If not sure can try shifting timing to see if it likes either advanced or retarded change. Was housing return valve either cleaned or replaced, if old one is on with ball knocked out advance will start to move earlier with no housing pressure.

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04-14-2012 20:47:27

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 Re: Rough idle after roosa master DB reseal, case 207D LJD?? in reply to Dieseltech, 04-14-2012 18:41:53  
I did mark new retainer in reference to the old one. Would it still run if 180 degrees off? I doubt it could be since it runs as good as it does.

I still have a "punched out" check valve on the housing cover. I thought I could clean out my old one as I punched out a check valve from a spare pump. I will buy a new check valve and try that. Thanks!

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04-15-2012 05:54:16

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 Re: Rough idle after roosa master DB reseal, case 207D LJD?? in reply to mikefromcny, 04-14-2012 20:47:27  
It won't run 180 degrees off. The fitting with the ball and spring is the housing-pressure-regulator-valve. Not just a fuel check valve. New one costs $7. It maintains internal housing pressure at around 5-6 PSI. Running without it would make the auto timing advance cut in a little earlier. I doubt it's your problem. But . . have you checked the timing advance? To do so, you need a $10 plastic timing window. Maybe you can borrow from a Deere mechanic?

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04-17-2012 17:40:47

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 Re: Rough idle after roosa master DB reseal, case 207D LJD?? in reply to LJD, 04-15-2012 05:54:16  
Dont own the timing window tool, dont know anyone that does either.
LJD, Do you have a list of "must haves" for resealing the roosa masters? I have another I'll eventually have to do on my JD 350 and just looked at a real sorry looking 3010. A friends father has a stalling waukesha in a 1655 that might become my problem.

Does US diesel sell the specialty tools? if so I need to buy enough to meet the $50 minimum.

I could use the timing window tool, umbrella shaft seal compressor, the "bristol wrench" Any others I should have? Parts numbers would be be real helpful too. Thanks.

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