Go BottomM1500D Vibration 1500 RPM
 | wlcox@ipa.net
Join Date: Jul 2003 Posts: 9 West Central Arkansas 
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2002-09-05 42063
Hi All:
I am curious if any of you have noticed more vibration in the smaller tractors at or around 1500 rpm. My M1500D smoothes out dramatically somewhere around 2000 rpm. Just curious if I may have a problem. I noticed too after crossing a small ditch a couple of times I had a small amount of antifreeze on the top part of my radiator, and approximately a 1/2 teaspoon on top of the battery. The system seemed pressurized ok though, and the radiator was almost full of coolant. Any thoughts on this? Thanks..Wes
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 | Peters
Join Date: Feb 2002 Posts: 3034 Northern AL 
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2002-09-05 42065
I have found the Yanmar engines to be smooth at all RPMS. With the JD 750 I would notmal idle at less than 800 RPM and run at 1500-1800. The New tractor I run at higher rpms. I might test the compression on the cylinders and check the injectors.
I am not sure where your water is coming from. Maybe you have a hose clamp that is loose and released water when you pumped the tractor over the tracks.
Where does your over flow tube come off the on the top of the rad cap. If they system is over full it might have release water from the system?
Peters. ....
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| TomG
Join Date: Feb 2002 Posts: 5406 Upper Ottawa Valley
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2002-09-06 42071
The vibration sounds normal to me. The frequency of vibration results from engine rpm. Lower rpm makes lower frequency vibrations. Some frequencies move things on a tractor around more than other frequencies. On my Ford, a rearview mirror bolted onto the steel canopy is not very useable around 1300 rpm but is OK over 2000 rpm.
I'd probably track down where the coolant is coming from and see if maybe it happens only on steep grades. An old-time trick for finding coolant leaks is adding liquid laundry bluing to the rad. It makes a nice stain where it leaks. Of course, I don't know if liquid bluing is still sold or if it messes up modern anti-freezes. However, it sure would throw off colour sensitive coolants, but it's good practice to change coolants every two years anyway whether it looks good or not. It should be replaced with diesel rated coolant.
I'd tighten up all hose clamps and might pressure test the rad cap as well. There should be some air space at the top of the rad, but how much is hard to say.
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| Peters
Join Date: Feb 2002 Posts: 3034 Northern AL
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2002-09-06 42076
I have not seen any dynamic unbalancing on the Yanmar 3 cylinder engines although as Tom says this is common on a lot of diesel engines. Is it 2 cylinder? As a grey market tractor I can not find any listing. ....
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| TomG
Join Date: Feb 2002 Posts: 5406 Upper Ottawa Valley
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2002-09-07 42122
Regarding gray market tractors: I used to think the term meant tractors that were brought into a country outside the manufacturer/dealer network and lack warranty coverage and in some cases may not be eligible for dealer service. However, these tractors may be identical to those sold by dealers in a country.
I've also heard the term applied to tractors from manufacturers that don't maintain dealer networks in a country. More recently, I've heard the term meaning something like low-hour tractors that are retired from service in other countries, factory reconditioned and sold as new.
I suppose the term can mean any of these things but knowing about gray market tractors would be good for anybody looking for private sales of used tractors. I suspect checking a serial number with a dealer would identify a gray-market tractor.
In a private sale it's also good to see if the seller can find his bill of sale. A tractor that turns out to be stolen goes back to the original owner with no compensation to subsequent purchasers no matter how many times it's been sold in good faith.
Guess this is a long way from vibration, which would be a subject of interest to me but could get esoteric very quickly. The 'gray-market' subject may be more generally interesting.
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