50 Hr Service

[Bavarian]

In reply to the above three previous responses(#8,#9,#10)...my question is "why run hydraulic lube in a gear application?" That's why I run gear lube in the gears of the 4x4 hubs/axle. Hydraulic oil is quite often factory fill, most likely for simplicity sake, but after the gears have had a break-in time why not protect them with a gear lube like most other heavy equipment does. Say you're pushing snow or you're digging buckets of gravel, all the while using 4x4 because you're spinning out otherwise, and lifting the heavy loaded bucket and turning and dumping the load. Hydraulic fluid in there? Not my tractor. Just saying... Dutchy

Which sump is your hydraulic system running from?

Most of the new machines have no separate reservoirs for transmission and hydraulic. So, the hydraulic fluid is transmission oil at the same time. And transmissions have gears. Why not run that very same oil in an axle housing with gears only.

Now throw in wet brakes and wet clutches, your trans/hydraulic fluid gets more sophisticated.
If your tractor has a self locking front differential, its a wet clutch. And that sure doesn't work well with domestic gear oil.

Every teenager knows not to run domestc engine oil in a dirt bike. It's for the clutches.

 

[DK35vince]

Been running gear oil in the front axle of my DK 35 the past 18 years, and that's what I plan to continue to use.

 

[Bavarian]

If it's a plane gear axle without a clutch, there is nothing against it.

 

[THEPARTYHOUND]

Just curious, how is the wet clutch set up in the differential? My 7320 has an auto engaging front differential (no locker or limited slip that I know of). Limited slip diffs are the only ones I know of with clutches, and they generally use 80w90 or similar and then require the addition of a small amount of friction modifier as well.

 

[woolyAcres]

I did my 50 hr service per the manual, which also matched what the dealer recommended: engine oil and filter, front axle fluid, hydraulic filters only, topping off with Mobil 424. As you've probably already heard/read those 2 hydraulic filters are a pain to get off. There are a stack of magnets inside that were all gunked up. They clearly pulled a lot of metal shaving out of the fluid. I was hoping some of the transmission/gear whine would go down after doing the 50hr service. If it did, it wasn't noticeable.

 

[JimR]

In reply to the above three previous responses(#8,#9,#10)...my question is "why run hydraulic lube in a gear application?" That's why I run gear lube in the gears of the 4x4 hubs/axle. Hydraulic oil is quite often factory fill, most likely for simplicity sake, but after the gears have had a break-in time why not protect them with a gear lube like most other heavy equipment does. Say you're pushing snow or you're digging buckets of gravel, all the while using 4x4 because you're spinning out otherwise, and lifting the heavy loaded bucket and turning and dumping the load. Hydraulic fluid in there? Not my tractor. Just saying... Dutchy

Rightly so to put gear oil in the front axle. Those little gears in the MFD take a lot of stress when using the loader in 4x4.

 

[THEPARTYHOUND]

Hey wooly, I didnt change the transmission fluid at my 50 hr service, but it sure looks like a lot of metal in there. I just picked up 3 pails (15 gallons) of Rotella HD (identical to the shell fluid called for in our manuals) for $40/ea at autozone on clearance. At that price Im gonna just do it.

 

[woolyAcres]

@theHound- that was actually my plan when I was at 50, replace fluid. When I called the dealer to order the filters and spoke with the service manager, he talked me out of the transmission fluid. My 2 biggest complaints about this machine are 1) no buddy seat, which I knew before buying but didn't realize how big an issue it would be and 2) I find it to be rather loud. I was hoping that changing the fluid and filters would reduce what I perceive to be a whine coming from under the seat. The service manager I spoke with though it was most likely the filters were plugged and in need of the 50 hour change. That's the conversation where he talked me out of changing the fluid but I've got it here and have considered doing it.

Do you find your model to be loud? Let me know if you think changing the fluid makes a difference.

There was another thread on here somewhere about the noise of this machine, cab model. Fellow was upset with the volume. I think he bought a radio but couldn't really listen to it. I have to agree. Considering just the machine noise- not attachment like cutter machine, bailer, etc- it's as loud as our open station tractor. But it's a lot warmer in the winter and cooler in the summer

 

[THEPARTYHOUND]

Yeah, mine is pretty loud too. Gear whine is what I think I'm hearing. I will use this Rotella HD I found a good deal on to flush out the old oil and get some clean oil back in there. I will run it for another 50-100 hours or so to let it finish breaking in if its not completely finished yet. At that time I will use a Transmission fluid from a company called Lubrication Engineers. Its not cheap, but way less expensive than my tractor was! It will be around $65/5 gallon pail plus another $25 to ship it. Ive done quite a bit of research on this stuff as my previous tractor came pre-loaded with this as the transmission fluid and it had their engine oil in it too. The stuff has such dramatically higher antiwear properties than anything else out there that if used in a new engine it will not allow the engine to break in properly. It is used in industrial applications such as mines, logging outfits, construction companies, etc. It is designed with extended drain intervals in mind. Instead of changing transmission fluid, you take a sample and send it off for testing. Transmission fluid would last 1k hours, likely 2k in our machines.
I talked to a rancher around here that started using it. He told me that after he started using this stuff in his transmission that he was able to pull his plow 1 gear higher than before! This is the stuff that I expect will quiet down my transmission if anything will.

 

[cat fever]

For the hydro filter, if you don't have a good chain wrench you better go buy one. Make sure you have a cheater too. The newly installed filter is just really hand tight. Should be easy on the next fluid change.

I think the owners manual says to use gear oil for the front end. That's what I used.

Good luck, let us know how it goes getting the hydro filter off.