Kubota B-7800 300 hour service

[KubotaSteve]

I just performed my 300 hour service on the B-7800. While some of the things I did at my 300 hour service are not required, I went ahead and did them since I had it in my dad's garage (as my garage is still in the planning stages).
Here are a couple of my findings:

1. I really didn't care for the way the front axle drained fluid nor how you had to re-fill it. Unless you put something in the wheel for the fluid to drain out on and run into a pan, it goes all inside your wheel. I found the best way to drain and fill it was to lift the front of the tractor with the bucket that way you could pivot the front wheels while in the air to drain it better as well as easier to get funnel in while filling it. Of course you have to let it down when getting close to fill it as you need check fluid on level ground.

2. Filling the transmission on the rear wasn't that convenient as I had to raise the ROPS, remove top link and holder to get funnel in hole.

3. The strainer bolt was like a 25 MM or 1 1/16" which a lot of people don't have setting around (luckily the old man has just about everything in his garage)

4. Besides showing where to drain and fill the fluids, the book really didn't provide a whole lot of info. (see #5)

5. When changing fuel filter, the book made no mention of the fuel stopping when the filter was removed. It only stated to make sure there was less than a 1/2 tank.

6. I used all Kubota filters and fluids and was a bit aggravated when I had re-use the small O-ring on the fuel filter. If I hadn't looked it over good and installed it without switching out small O-ring, I could have had a fuel leak and then tried to tighten it more causing something to break. As much as I paid for the filter, I would expect it to come with its own O-ring.

7. My last gripe is the Kubota hydro filters are tough to get off with that crappy wrench they give you. It will only slide just barely on the end and it you don't have it completely straight it will slide off. I had to end up using large pair of channel locks.

8. The good news is that everything looked great. Both the Super UDT and oil looked almost new.

9. The air filter was a breeze to change.

10. The drain plugs were really easy to get too.

11. After changing the hydro fluid, I didn't have any problems with air getting in the system.

12. All in all it was pretty good service with a few minor gripes. /forums/images/graemlins/grin.gif

 

[ncengr]

Good points. I agree about the fuel filter and the o-ring. On my B 2710 I found the hydraulic filter easier to remove using a strap filter wrench rather than fool with the cheap Kubota wrench. As for draining the front axle I used a plastic funnel/top that was originally used on old style oil cans (remember those?). It worked nicely to direct the oil into a flat pan.

 

[uhmgawa]

</font><font color="blue" class="small">( 7. My last gripe is the Kubota hydro filters are tough to get off with that crappy wrench they give you. It will only slide just barely on the end and it you don't have it completely straight it will slide off. I had to end up using large pair of channel locks.)</font>

What wrench? Neither HST nor dual hydraulic filters for my tractor
were accompanied by any tooling. Not a problem for an automotive
filter wrench until I reached the HST filter. The base is machined from
aluminum and mates face to face with the steel manifold. Al + steel +
H20 == permabond.

Three automotive filter wrenches bit the dust and the filter was
still one with the machine. This (attached) was the only way to
extract the filter. Desperate tooling consisting a of chain link fence
steel strap bent to the circumference of the filter's base and welded
to a 14" foundation bolt. A scrap of 1/2" pipe and bolt of the same
caliber and it was ready for battle.

 

[KubotaSteve]

A wrench came with my tractor. It works pretty good for the oil filter, but not as well for the hydro filters. My hydro filters look just like an oil filter for the most part.

 

[MadDog]

My B7800 didn't come with any tooling either. I use a strap wrench to remove both oil and hydraulic filters.

I figure mine will be ready for 200 hr service sometime in February - but it depends how much it snows this winter. /forums/images/graemlins/grin.gif

 

[DanR67]

My B7610 didn't come with a wrench - and I didn't previously own a filter wrench. When it came time to do my first, 50 hour service - I went to Sears and found this self-adjusting filter wrench .

It basically clamps down harder the more force / torque you use to loosen the filter - works like a charm. I picked this one instead of the slightly fancier model - I don't know if the "fancy" one offers better clearance to adjacent hardware (something a simple "strap-style" filter wrench has no problems with) - but I've had no clearance problems using the basic model with any of the three filters on my B7610.

Just recently did my 2nd engine oil change at @ 150 hrs - the hot oil comes out alot faster than the cold oil goes in thru the oil strainer in the funnel! /forums/images/graemlins/laugh.gif

Hope that helps,

Dan