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Farmall & IHC Tractors Discussion Forum
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B-250 Questions

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Mark Bourne

07-14-2005 12:27:50




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Hi,

I am in the process of buying a B-250 with a few problems. First off, the front end loader starts out real strong, but as the tractor warms up, it gradually gets weaker. What could this be? Relief valve, or filters plugging after a while. Where are the hydraulic filters and relief valves located on this tractor. Also, the tractor is very hard to start. I have to use ether, and it is still hard. After it has warmed up, I still cant restart it when warm. I think there may be a problem with the injector pump, maybe it needs a good bleeding???

Mark

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MJ in the UK

07-15-2005 09:44:10




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 Re: B-250 Questions in reply to Mark Bourne, 07-14-2005 12:27:50  
The B250 is a great little tractor. Made here in the UK starting with serial number 501 (i have no 549) I suspect you have a worn hyd pump as your loader works better when the oil is culd and thicker if it was a blocked filter the loader would work better when the oil was warm and could pass through the filter. Remove and clean the wires between the glow plugs to make them work better also the wire between no 4 plug and earth bolt on the timing case. GOOD LUCK MJ

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Michael Soldan

07-15-2005 04:42:51




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 Re: B-250 Questions in reply to Mark Bourne, 07-14-2005 12:27:50  
Mark, I brought a B250 home a few years ago that had been sitting for 8 years.I could only start it with ether. Once home I began using an injector cleaner additive and each subsequent treatment made it start easier and easier. I suspect your injectors may be "slobbering " instead of spraying, try injector cleaner, it may do the trick. The other response to your post is quite correct, that trans filter is in line, a tiny mesh screen inside the connection on the right hand side of the trans...it is tiny as it is inside that hydraulic line.....Mike in Exeter Ontario

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JB2

07-14-2005 20:11:36




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 Re: B-250 Questions in reply to Mark Bourne, 07-14-2005 12:27:50  
Hi Mark, we never had a B250 but had its bigger brother the B414, but drove a neighbour's B250 a lot.
Re starting: Glow plugs must all be working or it will not start first time. Once it is started and warmed up it will start every time without the glow plugs unless it is shut off so long it gets cold.
Must have good batteries, originally it was 2 x 6V in series. The glow plugs are in series with and indicator on the dash and if anyone burns out they all stop working.

Since the one you are looking at wouldn't start after it is warmed up, I would check cylinder compression and injection pump timing. The engine has a 22:1 compression ratio so it clatters a lot at idle.

Re hydraulics, the filter was in the suction(larger) line by your right leg when you are sitting on the seat. It is wire mess and in the front of the reservoir under the seat. Otherwise it could be weak hydraulic pump.
If it is the relief valve you usually can hear it chattering.

JB2

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