For anyone interested to know, I experienced my first regen on my MX5400 last night. Just before putting the tractor away I got the regen light. Followed the procedure per instructions on the fender decal. Hours at first regen was 20.6. When regen was complete it was 20.9, so it took between .2 and .3 on the hour meter to complete. I was a little surprised it was required because a lot of those hours were put on using a big PTO chipper running a constant 2600 rpm for the PTO, which is essentially a regen. This is just FYI for anyone curious about the regen process and frequency.
MX5400 first regen
- Thread starter BCfromVA
- Start date
jyoutz
Well-known member
Equipment
MX6000 HST open station, FEL, 6’ cutter, forks, 8’ rear blade, 7’ cultivator
I was finished doing what I was working on and was back at my shop. I just parked and let it run until it completed.
Isnt running a high and constant RPM advised against until after 50hours of break-in at low and variable RPM? (it's your tractor, you can do as you see fit! I'm just curious)
jyoutz
Well-known member
Equipment
MX6000 HST open station, FEL, 6’ cutter, forks, 8’ rear blade, 7’ cultivator
I have a MX6000 and didn’t see that recommendation in the owners manual. In fact it advises to run a a higher RPM to reduce clogging the DPF.
The regen process which you have to perform is running at a high and constant RPM. Of course all of the 20 hours on the machine are not at high and constant RPM. Of the 20, maybe a total of 5 hrs were running the chipper, and then not all at one time. Usually one half to one hour at a time. The other hours were the usual stuff of moving about or using loader.
From my Kubota manual:
"Therefore, to obtain the maximum performance and the longest life of the tractor, it is very important to properly break-in your tractor. In handling a new tractor, the following precautions should be observed.
Do not Operate the Tractor at Full Speed for the First 50 Hours."
" until RPM is satisfied. You can pick; failed regen or full throttle. No problem running full throttle here, it's a tractor.
NCL4701
Well-known member
Equipment
L4701, T2290, WC68, grapple, BB1572, Farmi W50R, Howes 500, 16kW IMD gen, WG24
I had a bit the same quandary on full throttle to satisfy regen during the break in period but had two thoughts then and same now:
1. If Kubota didn’t want a regen possibly run during the first 50 hours they would have programmed it not to regen until after 50 hours.
2) While the RPM may be the same, the load on the engine is substantially different running WOT just sitting v WOT with four 16” moldboard plows behind it throwing up rooster tails of dirt as you’re plowing as fast as possible. That’s because Wide Open Throttle is really maximum governed RPM. The “throttle” on the dash sets the RPM which the governor system then keeps relatively constant by varying the fuel to match the load. You have to put a pretty stout load on it to truly open the throttle near wide open.
1. If Kubota didn’t want a regen possibly run during the first 50 hours they would have programmed it not to regen until after 50 hours.
2) While the RPM may be the same, the load on the engine is substantially different running WOT just sitting v WOT with four 16” moldboard plows behind it throwing up rooster tails of dirt as you’re plowing as fast as possible. That’s because Wide Open Throttle is really maximum governed RPM. The “throttle” on the dash sets the RPM which the governor system then keeps relatively constant by varying the fuel to match the load. You have to put a pretty stout load on it to truly open the throttle near wide open.
jyoutz
Well-known member
Equipment
MX6000 HST open station, FEL, 6’ cutter, forks, 8’ rear blade, 7’ cultivator
mcmxi
Well-known member
Lifetime Member
Equipment
***Current*** M6060HDC, MX6000HSTC & GL7000 ***Sold*** MX6000HST & BX25DLB
The first regen on my open station MX6000 was around 30 hours IIRC. I'm at 23 hours on the new MX6000 with cab and have yet to see the regen light come on.
I've been varying rpm while blowing and pushing snow, uphill, downhill etc. It's hard to know how important any break in period is for our tractors but some will say that varying rpm as much as possible should help seat the piston rings properly and avoid hot spots in the cylinders. Who knows? I sure as heck don't know if any of this is meaningful, but since varying rpm is kind of easy to do I chose to do it for the first 50 hours.
I'm looking forward to the 50 hour service. If the new MX is anything like the first one there will be a lot of metal in the hydraulic filter.
jyoutz
Well-known member
Equipment
MX6000 HST open station, FEL, 6’ cutter, forks, 8’ rear blade, 7’ cultivator
Did you go the extra step at the 50 hour service and change hydraulic fluid, or just the filter like the manual says?
mcmxi
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Lifetime Member
Equipment
***Current*** M6060HDC, MX6000HSTC & GL7000 ***Sold*** MX6000HST & BX25DLB
Just the three filters and engine oil. I added a couple of quarts of Kubota UDT2 to make up what was lost in the filters and from draining out. A very easy service for sure, but not cheap with the three filters, engine oil and UDT2.
jyoutz
Well-known member
Equipment
MX6000 HST open station, FEL, 6’ cutter, forks, 8’ rear blade, 7’ cultivator
Thanks. Do you know what the front axle is filled with? UDT2 or 80-90W? Or does this vary by dealer prep?
mcmxi
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Lifetime Member
Equipment
***Current*** M6060HDC, MX6000HSTC & GL7000 ***Sold*** MX6000HST & BX25DLB
That's a good question and I don't know the answer. When I had my BX25D I drained the front axle at 275 hours and filled it with Mobile 1 75W-90 gear oil but I have no idea what was in there from the dealer.
this question is asked often, and I always spam the forum with the same two pictures
To me, the few bucks for some SUDT2, was worth the peace of mind.
50 hour fluid from LX3310
and 50 hour fluid from B2601
jyoutz
Well-known member
Equipment
MX6000 HST open station, FEL, 6’ cutter, forks, 8’ rear blade, 7’ cultivator
Interesting. I think I’ll take a look at the color of my fluid before making a decision. I’ve heard folks that find what your photos show, and others claim clear fluid at 50 hours.this question is asked often, and I always spam the forum with the same two pictures
To me, the few bucks for some SUDT2, was worth the peace of mind.
50 hour fluid from LX3310
and 50 hour fluid from B2601
jyoutz
Well-known member
Equipment
MX6000 HST open station, FEL, 6’ cutter, forks, 8’ rear blade, 7’ cultivator
mcmxi
Well-known member
Lifetime Member
Equipment
***Current*** M6060HDC, MX6000HSTC & GL7000 ***Sold*** MX6000HST & BX25DLB
The MX transmission holds about 12 gallons. 12 gallons of UDT2 isn't a few bucks!this question is asked often, and I always spam the forum with the same two pictures
To me, the few bucks for some SUDT2, was worth the peace of mind.
The service interval states to change the transmission oil at 400 hours. I doubt that I'll wait that long, but I'm not going to change it at 50 hours. Given your comment about metal coming out of the drains, maybe I'll remove the plugs to get that stuff out but I'd rather not spend $500 on transmission fluid at the 50 hour mark.