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Farmall & IHC Tractors Discussion Forum
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Bad Day for my 706

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Bob J in SD

03-22-2008 09:00:47




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A while back I was going to move my 706 in the shed, wanting to get ready to run my grain vac. I started the engine, and the oil light was on, I knew I had no hydraulic pressure, as I could hear the pump whine and the P/S was not working. As I waited for the hydraulics to start working, the engine started to groan, and squeak. I shut it off expecting the engine to be locked. I checked the oil and it was up but milky. Ouch! I had no idea the oil pressure in the engine was also low or 0 since the oil light burns for both engine oil and hydraulic oil.
I am assuming I have extensive engine damage, this is a gas engine.

I am wondering which diesel engine could be swapped into my 706 (Dad bought new in 63) as I am to the point of not wanting much for gas engined tractors on my farm. I use the 706 for the grain vac, drill, corn planter test plots, and fertilizer spreader.

Just some thoughts running through my mind, when the ground is covered with 9 inches of snow, and it is currently snowing more.

Thanks Bob

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Bob J in SD

03-25-2008 20:26:46




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 Re: Bad Day for my 706 in reply to Bob J in SD, 03-22-2008 09:00:47  
We have the tractor in the shop now, the oil pan is off, there was water in the crankcase,which had probably frozen the oil pickup screen. The bearings are damaged, but crank looks OK. I know this tractor has a tendency to get water in the engine when sitting outside. I just did not think it had gotten into the crankcase.

Not so bad after all, looks like we will be fixing the gasser up.

Thanks for your replies
Bob

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DCW

03-22-2008 12:01:05




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 Re: Bad Day for my 706 in reply to Bob J in SD, 03-22-2008 09:00:47  
Before you get all excited,find out like Hal says just how bad it is.Pull the oil pan off it,look for a burned out rod or main bearing.If the crank has to come out,pull her apart,assess the rest of the engine.


Just keep one thing in mind.

If you're going to fix this engine,find out why it had no oil pressure in the first place.



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El Toro

03-22-2008 11:42:25




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 Re: Bad Day for my 706 in reply to Bob J in SD, 03-22-2008 09:00:47  
I would drop the pan and take a look at the bearings. Your crank may just need to be ground undersize. Look at the rod & main journals to see if they're scored. Sleeve kits are available.
Hal



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steveormary

03-22-2008 10:01:36




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 Re: Bad Day for my 706 in reply to Bob J in SD, 03-22-2008 09:00:47  
Bob;

I never had a bad day with my 706. Ha. I had the later model with the 310 ger.dsl. engine.
Dont know if the 310 will swap in or not. What about rebuilding the engine you have even if you prefer diesel.

Good luck;
steveormary



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