yanmar ym 2000 won't start

[kenmac]

There are places that will weld your crank up & turn it back down. I know this is done in the race car circuit I'am sure they could do it on a tractor crank. However, this is also expensive. I wouldn't want to run a crank that has been turned more than 20 thousands. Sorry to hear the news is so bad. good luck

 

[normde2001]

Hello TBN

Well the the report is in from the machine shop on the crank. The crank is worn out of spec. 45 thousands to be exact. I think the bearings are only available 10 and 30 thousands over. I don't think I want to put a $500 crank in a worn out motor, if I was to do that it would all have to be new to do it right. I just don't understand the cost of the parts. $1500-$2000 to rebuild a 2 lunger? Maybe I can part the tractor out. or find a good used motor.Maybe another used tractor. You guys got any thoughts.
Gary<><

I would try a different machine shop. You should be able to get it reworked for about $150. Here is a place in Ga. that advertises regrind on a 2 cyl. John Deere crank for $150.

 

[kenmac]

if the crank is wore out of specs.45, then, you would need to have it turned another .10 to be sure it's straight.(you wouldn't want to put an egged crank in a new rebuilt motor.) now ,you are looking at .50 & I ( my opinion) wouldn't do it. This engine has too much compression for this . You may end up with a broken crank in a new engine .There was a guy on here a while back that was looking for a crank.He bought a crank from fredricks. He had a 3110 tractor. Good luck !

 

[greatrandini]

I just looked. Crank shaft new is $498.00 from Hoye.

 

[California]

Gary, here's your replacement engine on ebay!

eBay Motors: YANMAR TRACTOR 2 CYL DIESEL ENGINE SOUTH MISSOURI (item 130061453542 end time Dec-27-06 17:31:54 PST)

He says it was on a truck that rolled so the exterior parts are bent. That should be a good core to hang your accessories on.

He's parting out a whole YM240D (YM2000D) so there's a 4x4 front axle etc - click on 'View seller's other items' but note that every auction describes substantial crash damage.

 

[HGM]

I know I'm way late on diagnosis(for some reason I missed this thread earlier).. But, the key to the diag was vapor puffing out of the crankcase or oil fill when it was running.. Absoloutely had to be compression, thats what caused the pressure in the crankcase.. The freind that suggested the air test through the injector hole had it right. Blowing air in the combustion chamber(you may need to rotate the crank to close the valves, if possible) then listening at the exhaust pipe, intake, and oil fill(or breather) will tell you where your compression is leaking..

Sorry not to add this earlier, but maybe it will help future diag for others .. Why no one else mentioned it, well its easy to miss something on a thread, I'm sure many here would have had the same recomendation.. This place is a GREAT resourse for Yanmars..

Back to your problem Gary.. I would try contacting the dealers on here directly(though they have probably seen the thread and cant help) to see if they might have a used crank laying around or leads on one(maybe a "recon" dealer that cant rebuild a particular tractor ).. Then maybe as a last resort, if I couldnt find a used one anywhere(after lots of looking) I would have it welded and turned.. It should be fine... Its alot of work, but bottom line is you have to decide what the tractor is worth to you, how much do you want to spend? If you can live without it for a while and that engine on E-bay doesnt pan out, just keep looking.. Good luck..

 

[garyd]

California
Thanks for the heads up on the motor. Boy do I miss my tractor, we got about 4" of snow over night. AS to what the tractor is worth.....MORE as the snow gets deeper! I only paid 2700.00 for the tractor, with the crank shot and the rest of internals more than suspect. I am the type to replace everthing.The costs to replace everthing plus the machine work, it gets close to the original price. I guess Iwould know what what I've got. I don't get rid of things just hang on to them. I really enjoy this place and appreciate all of you! Have a safe and MERRY CHRISTMAS!
Gary<><

 

[garyd]

California
I did buy that ym 240 motor on e-bay last month, but the trucking broker I found and hired is giving me the run around. My motor is still setting on a truck dock in west plains Missouri. It was been over 3 weeks! I have paid for the motor and the shipping and there it sets. The guy I bought it from as been very helpful, but the trucking broker is suspect"discount freight"I am at a loss. Hopefully they can get it picked up and headed this way, it just seems way too long to wait.