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Case Tractors Discussion Forum
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David Browne / Case 990

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Jack Mc Guirk

01-25-2007 05:59:57




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1)What is the difference between an implematic & selectomatic 990?
2)If a 990 is hard to start when cold what is the likely cause?
Is it the diesel heater mechanism,if so where is it located?The tractor I'm talking about is early 1970's.




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richard in nz

01-27-2007 00:01:11




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 Re: David Browne / Case 990 in reply to Jack Mc Guirk, 01-25-2007 05:59:57  
The Implematic is Hunting pink with Primrose yellow wheels, the Selectamatic is Orchid white with a chocolate brown chassis, after the take over by Case the chassis was painted red. The main difference is the white tractors (oct 1965 on) have the selectamatic hydraulic system. This follows for all the David Brown tractors exept the 770 which had, and was the first to have, the Selectamatic system from its launch in early "65. The cold start is a small "T" shaped screw on the injector pump, screw it fully for cold start, there should also be a plastic plug on the inlet manifold with a foam pad behind it, you can spray either on to the pad.

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