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Tractor Talk Discussion Forum

Leyland 270 tractor Workshop Manual. Fuel injector

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Ady

09-26-2005 08:54:16




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I have had a problem with fuel startvation. I have traced this to the 'minimec' (this seems to be a fuel pump injector, which i think pumps each injector with the relevant amount of fuel). I think some dirt has got into this pump as no fuel comes out of the other end and a fuel build up is created when cracked over. I have tried blowing this back with an air line, but no joy. So i have tried to remove this pump but to clean it but have got stuck. The pump is loose but i cannot dislodge it from the engine, something seems to be holding it somewhere. Can anyone help?

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Paul in EasternON

09-27-2005 17:40:57




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 Re: Leyland 270 tractor Workshop Manual. Fuel inje in reply to Ady, 09-26-2005 08:54:16  
BTW, had a mechanic asking me when last time i replaced oil in Minimec, thought he was nuts. Theres 10w30 in it I guess, i checked level and it was fine looked clean too.



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RodinNS

09-26-2005 20:01:56




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 Re: Leyland 270 tractor Workshop Manual. Fuel inje in reply to Ady, 09-26-2005 08:54:16  
I'm not familiar with Leyland's, but I would expect that the pump drive gear is holding the pump in place, if you haven't removed it. At this point I'm not quite sure why you're removing the pump in the first place.
I would start by ensuring that there is a good flow of fuel going to the injection pump. There could be a bad transfer pump. The next step is to try bleeding the system. Provided there is flow to the pump, it should bleed fairly quickly. If it doesn't, then make certain that that fuel shutoff isn't stuck partially back, or otherwise in an off position. If that doesn't help, then remove the side plate of the pump that has "minimec" written on it, and move the throttle ahead and back. Observe the movement of the fuel rack in the pump. It should move. If it doesn't, then it's possibly stuck. Those would be the first things I would look for. Although it is possible that dirt could ingress into the fuel system, I would think the chances of it getting to the pump are slim, provided the fuel filter was kept in good condition. That, and the Minimec/Simms pumps were fairly durable. Removing the pump would be a last resort, after I was fairly certain that it was the source of the problem. HTH.

Rod

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Charles Santhuff

09-26-2005 12:48:32




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 Re: Leyland 270 tractor Workshop Manual. Fuel inje in reply to Ady, 09-26-2005 08:54:16  
I have a Workshop Manual Supplement for 98 MM engines and they list the 270 tractor as using it. The manual isn't doing me any good, if you want it send me your mailing address if you think it will help you.



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Paul in EasternON

09-26-2005 16:44:39




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 Re: Leyland 270 tractor Workshop Manual. Fuel inje in reply to Charles Santhuff, 09-26-2005 12:48:32  
If he doesn't want it, and it lists the leyland 272 in it, I could sure use it!



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Charles Santhuff

10-02-2005 05:11:24




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 Re: Leyland 270 tractor Workshop Manual. Fuel inje in reply to Paul in EasternON, 09-26-2005 16:44:39  
Paul, I haven't heard from Ady about the manual. Send me your address. If I don't hear from him pretty soon you can have it.



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Charles Santhuff

09-26-2005 17:57:32




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 Re: Leyland 270 tractor Workshop Manual. Fuel inje in reply to Paul in EasternON, 09-26-2005 16:44:39  
Doesn't list a 272. Lists 255,270,285,485,2100, and 4100. Guess these were tractors using the 98MM engine. Might be same engine as a 272?



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Manuel in Oz

09-26-2005 22:30:17




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 Re: Leyland 270 tractor Workshop Manual. Fuel inje in reply to Charles Santhuff, 09-26-2005 17:57:32  
My books says the 270 went from 1973 to 75.
In 1975 the horse power was increased to 72 & they called it the 272.
I thought the 98 stood for cc [per cylinder]
Thats why they called it the 4/98.
Works out to a 4 litre motor [roughly]
Hope this helps
Manuel



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