W5FL
Veteran Member
- Joined
- Apr 7, 2000
- Messages
- 1,558
- Location
- Central Texas
- Tractor
- TYM T-1104/TX10 Loader Kubota M6800SD/LA1002 Loader Kubota RTV900
As part of the purchase price of the M6800 the dealer included performing the 50 hr maintenance including pickup and delivery.
I decided that I wanted to do it myself, so they furnished all the fluids and filters.
The M6800SD is a 2000 Model 68HP 4WD tractor with a standard Synchronized Gear transmission, shuttle mounted on instrument panel, and has wet disk brakes in the rear axle.
Used pressure washer to get dirt and grease off tractor. Warmed up the tractor by mowing a few rounds in 4WD and then put it in the barn.
Draining the oil was straightforward with 2 drain plugs that should have been metric but better fit 1 1/8 socket. They were tight. Caught the oil in 5 gallon bucket and caught 4 oz in analysis bottle. Let drain overnight. Removed Oil Filter. New Kubota filter was exactly same type and size. Refilled with 11 1/2 quarts of Kubota 15W45 engine oil using a funnel. The drained engine oil was moderately black in color.
Drained the transmission/hydraulics. Draining was straighforward with two with 2 drain plugs that should have been metric but better fit 1 1/16 socket. Caught 4 oz in analysis bottle. Took two 5 gallon buckets full to hold it all. A little tricky moving one bucket and getting the other one under it. Let drain overnight. Found a third drain plug not mentioned in the owners manual or shop manual. Removed two large hydraulic screw on filters. Cleaned the magnetic posts that go up inside one of the filters with clean shop towels. Could not detect any metal filings, but there were some very fine magnetic particles stuck to the magnets, although not enough to get back off a paper towel. Replaced both hydraulics filters. Refilled with 40 quarts of Kubota Super UDT using a funnel(Spec was 42 quarts - maybe there was a little fluid behind the third drain plug). The drained hydraulic fluid was medium brown in color. I expected it to be clear in color, but it was not. The new Super UDT was amber in color although it appears clear on the dipstick.
Drained the front wheel differential. The color of the fluid was light red and looked about like Dextron ATF fluid. Replaced with Super UDT and it held about 6 1/2 quarts (Manual says 5 1/2 quarts). Used a cheap rubber pump type oil pump. There is an extra fill hole in the center of the front axle that has a plug in it, but does not seem to be used or needed. Fluid did come back out when filling the front differential before it got up to the other filling plug. The bolt just below that is a long one and is NOT an inspection hole!
Drained both of the front wheel drive gear boxes. The color of the fluid was medium brown and almost identical to the transmission/hydraulic fluid. Each gearbox held the specified 3 1/2 quarts (total of 7 quarts) each of Super UDT. Used a cheap rubber pump type oil pump.
Found every zerk on the tractor and loader and greased with an air/grease gun and lithium grease (can you imagine a Kubota dealer selling BLUE grease?)
Cleaned outer air filter with air compressor. Removed and cleaned radiator screens although they really did not need it. Adjusted clutch, brakes, and front axle pivot pin. Loosened the locknuts on the PTO cover and oiled. Loosened the nut on the hook for the upper link storage holder and oiled.
Sent the two analysis bottles off to DARR Equipment Company. Saved a pint of each fluids to try to determine what came from the factory in each of the oil compartments. The biggest surprise was that they do not appear to be the same hydraulic oil in all compartments and the color was different. I don't know an accurate way of measuring viscosity of oils, but can compare with some other oils that I have. I will put this data in Oil and Lubricants section.
I decided that I wanted to do it myself, so they furnished all the fluids and filters.
The M6800SD is a 2000 Model 68HP 4WD tractor with a standard Synchronized Gear transmission, shuttle mounted on instrument panel, and has wet disk brakes in the rear axle.
Used pressure washer to get dirt and grease off tractor. Warmed up the tractor by mowing a few rounds in 4WD and then put it in the barn.
Draining the oil was straightforward with 2 drain plugs that should have been metric but better fit 1 1/8 socket. They were tight. Caught the oil in 5 gallon bucket and caught 4 oz in analysis bottle. Let drain overnight. Removed Oil Filter. New Kubota filter was exactly same type and size. Refilled with 11 1/2 quarts of Kubota 15W45 engine oil using a funnel. The drained engine oil was moderately black in color.
Drained the transmission/hydraulics. Draining was straighforward with two with 2 drain plugs that should have been metric but better fit 1 1/16 socket. Caught 4 oz in analysis bottle. Took two 5 gallon buckets full to hold it all. A little tricky moving one bucket and getting the other one under it. Let drain overnight. Found a third drain plug not mentioned in the owners manual or shop manual. Removed two large hydraulic screw on filters. Cleaned the magnetic posts that go up inside one of the filters with clean shop towels. Could not detect any metal filings, but there were some very fine magnetic particles stuck to the magnets, although not enough to get back off a paper towel. Replaced both hydraulics filters. Refilled with 40 quarts of Kubota Super UDT using a funnel(Spec was 42 quarts - maybe there was a little fluid behind the third drain plug). The drained hydraulic fluid was medium brown in color. I expected it to be clear in color, but it was not. The new Super UDT was amber in color although it appears clear on the dipstick.
Drained the front wheel differential. The color of the fluid was light red and looked about like Dextron ATF fluid. Replaced with Super UDT and it held about 6 1/2 quarts (Manual says 5 1/2 quarts). Used a cheap rubber pump type oil pump. There is an extra fill hole in the center of the front axle that has a plug in it, but does not seem to be used or needed. Fluid did come back out when filling the front differential before it got up to the other filling plug. The bolt just below that is a long one and is NOT an inspection hole!
Drained both of the front wheel drive gear boxes. The color of the fluid was medium brown and almost identical to the transmission/hydraulic fluid. Each gearbox held the specified 3 1/2 quarts (total of 7 quarts) each of Super UDT. Used a cheap rubber pump type oil pump.
Found every zerk on the tractor and loader and greased with an air/grease gun and lithium grease (can you imagine a Kubota dealer selling BLUE grease?)
Cleaned outer air filter with air compressor. Removed and cleaned radiator screens although they really did not need it. Adjusted clutch, brakes, and front axle pivot pin. Loosened the locknuts on the PTO cover and oiled. Loosened the nut on the hook for the upper link storage holder and oiled.
Sent the two analysis bottles off to DARR Equipment Company. Saved a pint of each fluids to try to determine what came from the factory in each of the oil compartments. The biggest surprise was that they do not appear to be the same hydraulic oil in all compartments and the color was different. I don't know an accurate way of measuring viscosity of oils, but can compare with some other oils that I have. I will put this data in Oil and Lubricants section.
