B2620 Service and Manuals

[ItBmine]

Getting ready to do my 50 hour first service on my B2620 and noticed a few discrepancies. The owners manual shows 2 drain plugs for engine oil and three for the Hydro/trans.
The workshop manual shows 1 on the engine and says there are 4 on the trans....but does not show them. Any idea? I never looked at my tractor yet.

Note also while the owners manual says change hydro and trans filters and not fluid.....the workshop manual says hydro/trans fluid MUST be changed at 50 hours.

 

[North Idaho Wolfman]

I personally would change the fluids, think about all the millings and such that were stuck in the tractor when it was made.

 

[kuboman]

There is one drain for the engine on the 2620 and 3 on the tranny. And I too would drain the fluids.

 

[ItBmine]

I would never not do all the fluids with a filter change. And my hydro trans will be done yearly as I won't get the hours on very fast.

For what it cost, the shop manual doesn't show very much and it's info contradicts the owners manual. Go figure?

Thanks for the info.

 

[dave-eh]

There is also one more drain plug for hydro fluid. On the clutch housing ( front transmission case)

 

[North Idaho Wolfman]

There is also one more drain plug for hydro fluid. On the clutch housing ( front transmission case)

The plug under the clutch housing is a water drain not a fluid drain, the clutch is dry.
If you get fluid out of there when you pull it you've got some serious problems with seals.

 

[dave-eh]

If I read right we are talking of a b2620 hst. Connected to the clutch housing (behind) is what Kubota calls a front transmisson. there is a drain plug on that. Just did a fluid change today

 

[ItBmine]

Did mine today. I'll post pics tomorrow. Mine has one drain plug for the engine as it has one sump in the oil pan. My manual shows two and the picture shows an oil pan with two sumps.

The trans/hydro has three. A 17mm on the side of the mid pto snout, and one on each side of the trans. Note.....my owners manual and shop manual show the drains as the 14mm bolts that bolt the case together. The drains are actually the 12mm plugs between the two bottom 14mm bolts.

One question I have is I was going to curl the bucket so that all the cylinders were retracted, but I ended up just leaving it flat on the ground. And I had the 3pt all the way down. Anyway, I only put 13 of the 15 litres of oil it calls for back in and after running it for a while, then driving it and working all the hydraulics I am way overfull on the dipstick? Should I have curled the bucket? Maybe the 3pt wasn't all the way down with my blower still on it?

 

[North Idaho Wolfman]

There are several drain plugs (yellow) first is the Clutch housing, No Oil.


Next is the HST, Transmission Case, LH Axle Case, RH Axle Case, they all have Oil.

 

[North Idaho Wolfman]

One question I have is I was going to curl the bucket so that all the cylinders were retracted.

The loader cylinders hold just about the same amount of fluid in both positions, but technically extended will hold the most fluid, the volume without the shaft in the tube is greater, but you'll probably never notice a difference.

 

[ItBmine]

There are several drain plugs (yellow) first is the Clutch housing, No Oil.
View attachment 10640

Next is the HST, Transmission Case, LH Axle Case, RH Axle Case, they all have Oil.

View attachment 10641

View attachment 10642

View attachment 10643

View attachment 10644

Would have been nice if the $70.00 shop manual showed those. Mine looks nothing like that? Except for the first one.

 

[ItBmine]

Here's what I found. Pic #1 is what both manuals correctly show.

Pic#2 is the 12mm I removed which is a gasketed drain plug. Manuals show you to remove the 14mm housing bolt which is just ahead of it.

Pic#3 and 4 are the 12mm drain on the right side. Again, manuals show it as that 14mm housing bolt to the right of the actual drain plug.

Did I miss anything?? How did I end up overfull putting less than the specified amount back in? Tractor seemed to be level. Had the blower on the 3pt down to the ground and the bucket level flat on the ground. Left it sitting with the drain plugs and filters off for about a half hour.

 

[ItBmine]

Here's the engine oil drain plug. Manual shows a double sump oil pan with two plugs but mine is single sump.

 

[North Idaho Wolfman]

Looks like you have the drain thing under control.
I would think with all of the differences that you have pointed out you actually have a different model????
I've never seen an actual tractor not matching anything to the manuals or and especially their web site?
As for as overfilling it, it's not that uncommon for them to hold a little oil, How much more over was it?
Have you run it to circulate all the oil around the system then checked it?

 

[Lil Foot]

I find it pretty common on most things I work on that it's easy to overfill after draining, and I've always thought it's because they never fully drain. I suspect that the stated fill amounts in many manuals is the amount necessary to fill a new, completely dry, empty unit.

 

[ItBmine]

Well the owners manual came with the tractor and I also got the shop manual and illustrated parts manauls. I was thinking maybe they never updated them from an earlier model?

I did like the manual said after filling....let it run for several minutes at medium throttle, then, even though I didn't have to bleed the system, I did the procedure for that turning the steering back and forth. Then I took it out and worked all the hydraulics and drove it around in each range.
The level is about halfway up on the dipstick.

 

[North Idaho Wolfman]

I would just drain out the excess, and take note of that for the next time.

 

[mike paulson]

I went to my local Kubota dealer today and they showed me the revised service interval for the HST fluid and it's been changed to 400hrs. The service tech I spoke to laughed at the idea of changing at 50 hrs. So I figured I will get another year out of my very clean looking HST fluid and change it at 150 or 200 hrs. I will be changing the filter at 50 however.

 

[ItBmine]

He'd really laugh at me then...I'm now at 106 hours and changing all fluids and filters again. Somebody will get a really nice tractor when I trade for the next new one, lol.

 

[Crapmaster]

Here's what I found. Pic #1 is what both manuals correctly show.

Pic#2 is the 12mm I removed which is a gasketed drain plug. Manuals show you to remove the 14mm housing bolt which is just ahead of it.

Pic#3 and 4 are the 12mm drain on the right side. Again, manuals show it as that 14mm housing bolt to the right of the actual drain plug.

Did I miss anything?? How did I end up overfull putting less than the specified amount back in? Tractor seemed to be level. Had the blower on the 3pt down to the ground and the bucket level flat on the ground. Left it sitting with the drain plugs and filters off for about a half hour.

I'm about to tackle the transmission fluid and filter change on my B2620, but I'm slightly confused, are there 3 or 4 drain plugs?