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MTZ Tractors - Old Models (Belarus) / Re: Looking for some help
« Last post by Jerry on April 11, 2017, 07:18:22 AM »
Haymaker, thanks for getting back to me, got the leak fixed, bad 0 ring. The diff lock still don't work on ice, possibly slip clutches are bad. Thanks Jerry
MTZ Tractors - Old Models (Belarus) / Re: Looking for some help
« Last post by Haymaker on April 10, 2017, 06:50:57 PM »
I've never took that apart. But it shouldn't be too bad find parts diagrams online to assist.
MTZ Tractors - Old Models (Belarus) / Looking for some help
« Last post by Jerry on April 09, 2017, 07:59:43 AM »
Hi, I have a 572 4x4 that was leaking hyd fluid from the rear differential lock casing, I have disconnected the line from the power steering pump to stop the leak and would like to fix it now. can anyone give me some advise on what I may need for parts. I the parts diagram it show a rubber diaphram, this may be the problem but I may need other parts as well. Also has anyone did this repair? is it a big Job? I am not much of a mechanic. Thanks for the advise. Jerry
MTZ Tractors - Old Models (Belarus) / Re: 250AS value on open market
« Last post by TractorLady on April 05, 2017, 06:03:36 PM »
Thank you for the info. I should have included my location. I am in Southwestern Indiana about 1 hour north of the Kentucky state line.
MTZ Tractors - Old Models (Belarus) / Re: 250AS value on open market
« Last post by Haymaker on April 05, 2017, 11:30:29 AM »
Its pretty hard to give a value as it will vary drastically depending location. Some areas in North America Belarus tractors bring a fair dollar and other areas not so much.    Check your local online listings be it craigs list, kijiji or whatever to see what people are asking.
MTZ Tractors - Old Models (Belarus) / 250AS value on open market
« Last post by TractorLady on April 04, 2017, 10:10:02 AM »
I posted our 250AS in the buy sell trade section but am wondering if I have it priced right, high, or low?
it only has 320 original hours on it. It runs and is fully operational/functional but does need batteries. We have always just bump started it with our H.
I believe it is between an 87 & 89 model. Any help or suggestions on pricing or where I can move this tractor quickly would be greatly appreciated.
Buy, Sell & Trade / 1987-1989 250AS FOR SALE
« Last post by TractorLady on April 04, 2017, 09:52:33 AM »
I have a 250AS for sale. has 320 original hours on it. Tractor had been sitting for several years before we purchased it so does show its age. Needs batteries but does run and is fully operational. We have just always bump started it very easily. Very nice tractor. Asking $2,000 OBO Pictures attached
Great post !
Thank you !
Belarus 400-series 4x4 (420A, 420 AN, 425A, 425AN, T42LB, T40A, T40AM) Semi-Flexible Driveshaft Coupling Donut

The four front diff bolts on my 420A were loosening under heavy loader use and putting extra stress on the diff input shaft flange & driveshaft flange. I upgraded to stronger fine-thread diff bolts and made a semi-flexible driveshaft coupling donut to help absorb potential stresses.

For the donut I used 1/2" HDP (High Density Polyethylene) aka Starboard/Seaboard but an old poly cutting board will do the trick. Anywhere from 1/4" -1/2" thick x about 85 mm dia. The ft diff input shaft floats fore & aft so if you have the 39-1/2" long OEM driveshaft (Part #: Т40А-2302072)
up to 3/4" can be added to that. I only used one 1/2" thick donut between the front flanges but one could install, i.e., two 3/8" thick donuts, one on each driveshaft end.

I used 7/16" (double-nutted) bolts as they're a tight fit & help align the shafts. Note pictured bulge after tightening flange bolts.

Happy Trails,

Great story pictures are nice you have a nice setup!
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