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Show Parts for Model:

TS 90 won't run

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12-05-2017 06:48:45

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Brother has New Holland Tractor. It wouldn't throttle up all the way then it wouldn't idle down completely. He changed filters and fuel, primed, got it restarted, no change. Ran it for a while when he throttle back it shut off and will not restart. Any ideas? I'm use to changing pumps on 233's and 256s. I'd this basically the same engine?

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12-08-2017 10:46:13

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 Re: TS 90 won't run in reply to RBnSC, 12-05-2017 06:48:45  
Its not hard, just time consuming..
Front cover infront of pump comes off.
Rotate engine until the "extra hole" on the gear is at 6:00
THEN, insert the timing pin or backside of a drill bit into the hole until it pokes thru INTO the PUMP housing.
THAT locks the pump & engine where its supposed to be..
Take the bolts out of the gear & the lines & linkage off & the 3 bolts on the pump.. DONE

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12-08-2017 10:48:23

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 Re: TS 90 won't run in reply to thepumpguysc, 12-08-2017 10:46:13  
OR if the bolts holding on the pump are on the INSIDE of the front cover.. THATS a whole diff. ball game.

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12-05-2017 09:47:41

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 Re: TS 90 won't run in reply to RBnSC, 12-05-2017 06:48:45  
It's probably the lift pump on top of the filter head.... the injection pump is quite different than the older ones. It needs to be timed/locked before removal if you go that route. However, mine did the same thing a year ago. Lift pump was worn out.


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12-06-2017 05:12:49

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 Re: TS 90 won't run in reply to RodInNS, 12-05-2017 09:47:41  
Thanks Rod. They changed the supply pump when they changed filters (just found that out). They have fuel to the injector pump just nothing at all coming out. Is there a screen inside the pump that could be stopped up?

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12-06-2017 05:52:00

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 Re: TS 90 won't run in reply to RBnSC, 12-06-2017 05:12:49  
Tere is likely an inlet screen in the transfer section. You should probably see that from the supply line. If you're sure that there is good fuel flow then likely you have a metering valve problem... or worse.
I've never had that specific pump off but from what I understand you set the engine to it's timing marks and lock the pump before removal. It's not like the old ones that have a dowel on the gear. As far as I know this has no physical timing pin on the drive gear....


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12-05-2017 06:49:35

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 Re: TS 90 won't run in reply to RBnSC, 12-05-2017 06:48:45  

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