A Couple Of Questions For B2650 Cab Owners

kcender · Dec 12, 2016

I just got to use my B2650 Cab tractor for the first time.The whine from the transmission is almost unbearable.I did try it out before I bought it and debated over buying it because of the noise.In the end,I bought it because it fit my needs and I was hoping I could get used to the noise.Have owners of these tractors noticed the noise getting less with more hours,or does it stay about the same?I live in Canada so I can't change to super UDT.We have what is called premium UDT, which is in the tractor now.Even with ear plugs I find the noise too loud.Also,when backing up the transmission is jerking.I had it in high range at full throttle.Has anybody else noticed this?This is my first cab tractor and it was nice plowing snow with the heat on.

newtattoobob · Dec 12, 2016

I have had one for almost 3 years and love it. The transmission is a little loud but I don't think unbearable. I always plow snow in low gear, high gear is only for road use. Try using low gear the noise will be much less.

rScotty · Dec 13, 2016

kcender said:
I just got to use my B2650 Cab tractor for the first time.The whine from the transmission is almost unbearable.I did try it out before I bought it and debated over buying it because of the noise.In the end,I bought it because it fit my needs and I was hoping I could get used to the noise.

Try a good set of noise-cancelling headphones. Yes, they are expensive.....but even if you can get used to the noise, your hearing will suffer. Trust me on this.
rScotty

TMGT · Dec 13, 2016

I 2nd trying a lower range, my 2620 rarely sees H unless there's a long flat smooth road. The trans will make a lot of noise in H due to the load.

jrepp44 · Dec 13, 2016

Noise canceling headphones work the best for me, the whine is so loud I can't operate without them. I changed to the Kubota super udt2 - did not help at all. With over 300 hours the noise is not getting any better.

kcender · Dec 13, 2016

Thanks for the response.

tempforce · Dec 24, 2016

i've installed heat reflective sound deadening mat under the floor mats. behind and under the seat. on the firewall and on the lower window frames. the lower 1 foot of glass on each side of the console. next will be the underside of the fenders and the underside of the metal around the hydraulic controls. it's making some improvements... i'm looking to cover the top 1/2 foot of the windshield as i'm getting too much sun in the eyes. using a sound probe, the glass is transmitting noise.. so maybe a strip along the edge of the doors may be included.

rScotty · Dec 24, 2016

jrepp44 said:
Noise canceling headphones work the best for me, the whine is so loud I can't operate without them. I changed to the Kubota super udt2 - did not help at all. With over 300 hours the noise is not getting any better.

On our M59 Kubota I tried three different Kubota trans/hydaulic oils: UDT, Super, and UDT type 2 - all without much change in the whine. Then my dealer recommended New Holland Multi-G 134 (it's what they use it) and that made quite a reduction in the whine. Multi-G is not as good below zero, but frankly I don't use the tractor much when it is that cold anyway. The few times I do use it when cold, I warm it up well with the heater before starting and then let it idle for half an hour to bring everything up to temp.

You might try a completely different trans/hydraulic oil just to see if things change.
rScotty

kcender · Dec 25, 2016

rScotty said:
On our M59 Kubota I tried three different Kubota trans/hydaulic oils: UDT, Super, and UDT type 2 - all without much change in the whine. Then my dealer recommended New Holland Multi-G 134 (it's what they use it) and that made quite a reduction in the whine. Multi-G is not as good below zero, but frankly I don't use the tractor much when it is that cold anyway. The few times I do use it when cold, I warm it up well with the heater before starting and then let it idle for half an hour to bring everything up to temp.

You might try a completely different trans/hydraulic oil just to see if things change.
rScotty

Is that a Kubota dealer who recommended New Holland oil?I assume you mean zero degrees fahrenheit,not celsius.

rScotty · Dec 25, 2016

Yes, the recommendation was from a fairly large Kubota Dealer. There are lots of transhydraulic fluids out there and it seems that every major equipment manufacturer has their own formulation. I don't know if any tractor manufacturer actually makes their own oil or has an oil company do it. A few years ago, Royal Manufacturing was making Kubota UDT and SUDT. Maybe they still do. Messick's used to have a page on their site that talked about mixing different transhydraulic oils. I don't remember exactly what it said - but my impression at the time is that they could be mixed.

One thing that many have noticed is that different oils sound different in different machines. That's why I said you might want to try a different oil. I don't think there is any reason you should have to put up with a whining HST. Gotta be a better way......

Around the 400/500 hour service on the M59 I tried Royal Manufacturing's KUBOTA UDT & SUDT and both put an audible rattle into my hydraulic pump.. that's right, I bought 12 gallons of UDT and then when it was noisy drained it and bought 12 gallons of the SUDT - all from the same Kubota dealer. Maybe I'm a slow learner.....The HST & pump was noisy on both. I talked with the dealer and he said he had found the same thing and that I should to go back to the New Holland oil. Then he told me that the New Holland oil is what he had put in mine when it was new. So... what I'm saying is that changing back to the New Holland Multi-G 134 on my dealer's advice made the sound go away. For my tractor the evidence doesn't get much clearer than that - but it was kinda costly to throw out that much UDT & SUDT. Plus filters...

Yes, I was referring to zero degrees F. (not C) and the standard Multi-G 134. From the ads I see there is a special lower temperature Multi-G transhydraulic oil, but I don't have any experience with that oil.

BTW, I use specific Deere brand trans-hydraulic oil in the JD tractors and whatever oil is left over goes into the Yanmar hydraulics - but the Yanmars are bullet-proof and manual tranny anyway.
good luck,
rScotty.