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Author Topic: 825 preheater  (Read 1084 times)

Haymaker

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Re: 825 preheater
« Reply #4 on: December 23, 2018, 11:22:38 AM »
We do use a block heater and it stars great when itís being used but itís hard to plug in when itís not near the barn. We also use ether but as a diesel mechanic I just cringe when I use that stuff. I guess Iíll just leave it. I have never seen a heater like this. I was hoping it would have glow plugs which would be an easy repair

Yes i was of the same opinion and tried to get it to work.  I didn't have issues with wiring it just didn't seem to help much and you still had to crank the engine so much. Which was frusterating as a little shot of ether and its running right away. I was trying it on the bench and accidently burned the little element out.  It all comes apart quite easly actually.  So I made a plate and mounted on another brand actually from a MF tractor i got from AGCO as it was cheaper then the one from Belarus.  Works exactly the same but still didnt seem to be effective enough. So back to the ether can which when used properly works fine
« Last Edit: December 23, 2018, 11:25:01 AM by Haymaker »
  • Tractors- '93 Belarus 825 with loader and others...

Drabe1

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Re: 825 preheater
« Reply #3 on: December 23, 2018, 09:13:27 AM »
We do use a block heater and it stars great when itís being used but itís hard to plug in when itís not near the barn. We also use ether but as a diesel mechanic I just cringe when I use that stuff. I guess Iíll just leave it. I have never seen a heater like this. I was hoping it would have glow plugs which would be an easy repair

Haymaker

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Re: 825 preheater
« Reply #2 on: December 23, 2018, 12:25:18 AM »
I can probably dig around for wiring diagram for you if you like Also the operators manual has it in it. I'd have to look there may even be thread on the message board here on the wiring of it.  But personally I wouldn't bother with it as I've never had luck getting them to work well enough to be effective.  The way it works is when you push the button on the dash a little valve opens allowing Diesel to run down on a little element that heats up creating a vapor or even flame in the intake to aid in starting.  I have the same system on another brand of tractor and it works better but still not great or like glow plugs.  My other tractors on the farm use ether starting fluid.  So that's all I've used on my Belarus 825 the last 21 years I've had it and it works good. A $3 can lasts a long time, I just squirt a bit into the air intake on top of the hood.  Much below freezing i just plug it in for a little while. IF its really cool like -30 then it needs to be plugged in several hrs. Also you should be running synthetic in real cool temps if its always parked outside.

In the cooler days of winter I just plug it in and it will start fine. A 1500 watt circulating heater plumbed in and the tractor starts in any weather easy.  Here is a thread on it http://www.mtztractortalk.com/mtz-tractors-old-models/engine-coolant-heater-installation/


« Last Edit: December 23, 2018, 12:37:39 AM by Haymaker »
  • Tractors- '93 Belarus 825 with loader and others...

Drabe1

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825 preheater
« Reply #1 on: December 22, 2018, 06:32:24 PM »
I'm trying to repair my neighbors 825. It starts hard in the cold. The light doesn't come on, on the dash. The wiring is an absolute nightmare on this thing. i want to start fresh. Does anyone have a schematic for this circuit ot know how it works? I have no idea what it would draw