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  1. #1
    Silver Member
    Join Date
    Apr 2011
    Posts
    146
    Location
    Central Massachusetts
    Tractor
    L3800 HST

    Default L3800 50 hour service

    I've been worried about the 1st service (50 hour) and my decision to do it myself vs dealer. I'd heard different opinions on the level of difficulty. If you are on the fence also, not to worry, I did mine yesterday and it was a complete piece of cake. Zero problems other than a bit of a mess. I'd advise putting down a sheet of cardboard to catch the drips.
    For what its worth I'll go through how I handled things. First I got out the owners manual and made up a checklist of all the 50 hour items. Basically in my case it consists of :
    1. some additional zerk grease points that are not included in the regular 10 hours greasings. For example in the case of my tractor it adds 3 point lift arm, tie rod ends, front axle support and 3 pedal linkage points. You may have to bend, stretch and crawl around a bit underneath but they were all relatively easy to locate and service w/ the regular grease gun.
    2. drain engine oil, (run engine briefly before to warm oil) again very simple and similar to a regular car oil change except that there are two drain plugs instead of one and they took longer to drain. Both were not over torqued and easy to remove.
    3. replace engine oil filter, no mess, no problem removing w/ standard oil filter wrench.
    4. refill engine oil, fill port is near dip stick and required a long necked funnel to prevent a mess. Run engine briefly, check for leaks and recheck oil level
    5. remove transmission filter (again it took a regular oil filter type wrench) and replace w/ new (remember to prelube rubber gasket w/ clean hyd. fluid first), have a catch basin underneath, you will lose a small amount of fluid (maybe a half a cup at most, I think it is just what is in the filter at the time).
    6. Now for the messiest part, but still not bad. The hyd. suction filter is located near the engine oil dipstick area. Have the new filter ready w/ gasket prelubed, make sure magnetic filter is attached. Have catch basin underneath w/ cardboard under that. As you start to remove filter the fluid will flow out, not a flood but a pretty good flow. You need to work fast after removing old filter. Grab the new one and without panicking carefully screw it on (care to keep it level and don't cross thread). The filter can get pretty slippery but it only takes a few seconds to get it on enough to stop the flow. Tighten to proper amount, not too tight! Check sight glass and add SUDT fluid to proper level. Run engine briefly, shut down, recheck level and top off if needed. I noticed a fair amount of metal shavings attached to the magnetic ring of the old filter. I expected that but was still glad to have changed the filter and got that out of the system.

    You are done!!!! Maybe an hour or two from start to finish depending on if you take it nice and slow. No heavy lifting and it will give you a better understanding of the tractor by the time you are done. I also took the time to lube the hood latch, check the air filter and blow out the radiator screens but these steps were not a part of the 50 hour.
    Have a ball and safe tractoring.
    L3800 HST, Landpride 72" rotary cutter, Wallenstein BX42 chipper, FEL, BH77, 42" pallet forks

  2. #2
    Super Star Member k0ua's Avatar
    Join Date
    Jun 2009
    Posts
    14,124
    Location
    Branson, Mo.
    Tractor
    Kioti DK35se Hydrostat

    Default Re: L3800 50 hour service

    Good write up.
    Also would not hurt to check front differential fluid as quite a few operators have found the level quite low. Seems it takes some time for the fluid to settle and displace all of the air voids in the axle/differential/final drive components. When filled at the dealership it may be full but later it will show down a quart or 2.

    James K0UA
    James KUA

    Kioti DK35se hydrostat with 2 QA buckets, 48 inch. King Kutter Rotary Cutter. 750 lbs ballast box. Loaded tires, Construction Attachments SSQA Lightweight Pallet forks. EA 50 inch single lid "wicked" Grapple. Satisfied Everlast PA160 welder owner How to add a link to a post . Best way to search TBN


  3. #3
    Silver Member
    Join Date
    Apr 2011
    Posts
    146
    Location
    Central Massachusetts
    Tractor
    L3800 HST

    Default Re: L3800 50 hour service

    Good point, that gets added to the list.
    L3800 HST, Landpride 72" rotary cutter, Wallenstein BX42 chipper, FEL, BH77, 42" pallet forks

  4. #4
    Silver Member
    Join Date
    Mar 2010
    Posts
    163
    Location
    Ozark Alabama
    Tractor
    07 Kubota L3400

    Default Re: L3800 50 hour service

    I'm deployed right now but I thought that kubota also had you change the hydraulic fluid at 50hrs. Could be wrong don't have access to my owners manual here in Afghanistan. What fluid did you use to top it off, the Kubota brand or just the generic stuff. I've here both ways would be interested in what people think.

  5. #5
    Elite Member gwdixon's Avatar
    Join Date
    Jul 2009
    Posts
    2,507
    Location
    Northern CA

    Default Re: L3800 50 hour service

    I guess my classification can now be "old fogy". IMO the hydraulic oil should be changed at 50 hours despite what the manual says. Oil shavings and assembly debris are like rats or roaches - if you see one, then you have an infestation of unseen ones. The filter doesn't catch it all. Sure, the fluid has not broken down or lost lubricating ability at 50 hrs. but it is all the other gunk that needs to go.

    With my tractors, every time the filter is changed so is the fluid.

    For years kubota recommended changing the hydraulic oil at 50 hours. Then the environmentalists and bean counters got together and decided that it could go 200 hrs, 300 hrs, 400 hrs or whatever a particular new tractor manual says with only a filter change.

    Two of my tractors take 15 gallons each of hydraulic fluid so I can see the economic point. The environmentalists, well....

    In summary, there are not logical reasons for the change in procedure.
    2009 Kubota M7040, R1s, LA1153 FEL, fork lift, 3 rear remotes, T&T
    2002 Kubota L48 TLB, 12", 18", 24" HD buckets
    2001 Kubota BX2200, Turf, LA211 FEL
    7.5' Howse 3PT disc, 88" Gearmore 4G4 box scraper, 4' box scraper, Gearmore GB85 blade, LandPride RCR2596 cutter, 6', 4' flail mowers, 6', 4' rototiller, 4' Bush Hog cutter, HD subsoiler, Bearcat 70554 chipper, Bush Hog PHD w/ 12", 6" augers, Ford 101 3-bottom plow, 8' land leveler, 6' rake, lots of misc.

  6. #6
    Silver Member
    Join Date
    Apr 2011
    Posts
    146
    Location
    Central Massachusetts
    Tractor
    L3800 HST

    Default Re: L3800 50 hour service

    I don't know if kubota has changed the recomendation recently but my L3800 was purchased in July and the manual says filters only at 50 hours, fluid not until 200 hours so that is what I did. I can understand some people wanting to play it safe by doing both but....I recently purchased 3 gallons of Kubota SUDT2 for just under $100 and my tractor takes over 6 gallons. I may be penny wise/pound foolish but I'm going to follow factory specs for now and hope that the filters do what they are designed to do.
    L3800 HST, Landpride 72" rotary cutter, Wallenstein BX42 chipper, FEL, BH77, 42" pallet forks

  7. #7
    Silver Member ritschner's Avatar
    Join Date
    Aug 2010
    Posts
    112
    Location
    Burnet, TX
    Tractor
    Kubota L2800 HST

    Default Re: L3800 50 hour service

    Just a couple of quick add-on comments. Pulling the dip stick off of it's seat or opening the filler cap will cause the oil to drain much faster. There is also a filler cap on top of the valve cover. I find it easier to add or refill oil there when the loader is attached.
    2007 L2800HST, R4's, Rear 3-Point Lever, LA463 FEL W/Shortened Loader lever, Rhino 160 mower, Armstrong Ag box blade, Armstrong Ag rake,

  8. #8
    Silver Member
    Join Date
    Apr 2011
    Posts
    146
    Location
    Central Massachusetts
    Tractor
    L3800 HST

    Default Re: L3800 50 hour service

    Thanks I didn't know about the additional fill point on the valve cover. That will be helpful as the other one is partially hidden by a plastic cover and requires a long/thin necked funnel to reach.
    L3800 HST, Landpride 72" rotary cutter, Wallenstein BX42 chipper, FEL, BH77, 42" pallet forks

  9. #9
    Bronze Member Tibbits's Avatar
    Join Date
    Aug 2007
    Posts
    74
    Tractor
    L3430 GST, BX1500

    Default

    I changed the hyd fluid at 50 (actually 118 as the tractor was used and not had a real 50 hr service). but I'll wait for the recommended 400 hrs next time. I feel the filters handle it good enough and they're replaced every 200. and with 11 gals needed for an L, cost is not worth the overkill IMO.
    thanks to this site , changing the filter without changing fluid was clean...due to the 'shop vac' method with a wife.
    checked the fluid yesterday and it's crystal clear, stays right on the top mark after about 250 hours.
    this past summer was a testament for kubota. I put almost 300 hours on it, with a lot of those hours hard work like discing and box blading. not even a hint of a problem.

  10. #10
    Platinum Member KYDan's Avatar
    Join Date
    Sep 2011
    Posts
    691
    Location
    Frankfort, KY
    Tractor
    Kubota MX5100 HST 4WD

    Default Re: L3800 50 hour service

    Yes, Kubotas are well engineered and built. When you perform the 50 hour service and remove the hydraulic oil filter be sure to check that there are not excessive metal particles in the goo around the inlet. Goo is normal and there may be a few metal flecks, but that is OK. I took mine in for my dealer to see just to be sure. He advised me that all was normal.

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