Changing Transmission Oil on 4120

[Gale Hawkins]

The TSC Hy-Gard spec is 10W-20 weight per the container label.

 

[Cidertom]

One other thing for the option tool kit. White is usually water contamination. I used to have a tiller that sucked water into the gear case. If I didn't drain the water before I used the tiller it turned to milky sludge. (BTW, It was stored inside). Draining the water solved the problem. Anyway, one trick I was told was: Drain the fluid into a clean pan/cauldron/ deheaded drum, and bring it up to the boiling point of water. The water will escape as steam, leaving the oil behind. Don't take the temp much higher than 100C to avoid damaging the oil. Use that as the flush oil, and then change. I never tried it, as the small amount of oil in the tiller wasn't worth the effort.

 

[om21braz]

Another hydro fluid change here soon, thanks for the tips! Also, how much of the book listed capacity of 9.6 gallons on an eHydro can one expect to drain out ?

 

[AKfish]

Another hydro fluid change here soon, thanks for the tips! Also, how much of the book listed capacity of 9.6 gallons on an eHydro can one expect to drain out ?

Just changed all the hyd fluid on my JD110. It's very similar in most categories to the 4000 series JD tractors.

I'd guess that I drained out everything but a quart-quart and a half less than the full 9.7 gallons. Definitely needed both of the empty 5gal buckets.

AKfish

 

[AKfish]

I have not found any really cheap fluid but I have thought about that. The dump truck looks like it has never been changed and is in a mess. I thought about draining it and putting what is in the JD and MF in it as a flush.

The JD fluid is a faint white and water forms at the top of the dip stick but it is nothing like as bad as the dump truck hoist. The guy has replaced the two filters and used JD brand Hy-Gard he stated since he bought it 3-4 years ago.

I keep my JD hyd oil for my neighbor's dump truck and Farmhand loader (big resevoir on loader frame).

His cylinder and pto pump leak enough that he's always "cycling" thru enough fluid that the system gets "changed" every few hundred hours, anyway.

My 110 has 2 filters on the hyd system, too. Big sump filter and a smaller charge filter. New tractor; so, I change the charge filter every oil change (200 hrs.).

If you don't want to go with a cheaper fluid and change early after a short run - you could just double down on the filter change-outs. I'd guess that the filter costs are likely equal to 50% of the hyd oil costs, though.

AKfish

 

[Gale Hawkins]

I keep my JD hyd oil for my neighbor's dump truck and Farmhand loader (big resevoir on loader frame).

His cylinder and pto pump leak enough that he's always "cycling" thru enough fluid that the system gets "changed" every few hundred hours, anyway.

My 110 has 2 filters on the hyd system, too. Big sump filter and a smaller charge filter. New tractor; so, I change the charge filter every oil change (200 hrs.).

If you don't want to go with a cheaper fluid and change early after a short run - you could just double down on the filter change-outs. I'd guess that the filter costs are likely equal to 50% of the hyd oil costs, though.

AKfish

The 1983 JD 310B backhoe has two large filter elements and the two of them was about $24 total. They may have cheap ones but I just ask for Wix.

Out of the JD and MF I will have about 17 gallons of better fluid for the dump truch lift. I am going to cut the the paste like fluid with about 5 gallons of diesel to help get a better flush when the temps are about 100.

 

[om21braz]

Did service today, hydro level was good when I began. Drained case, pulled suction strainer/cleaned, new spin-on filter, removed in-line filter/cleaned. I wound up draining approx. 8 gallons - all fluid was caught and poured back in 1 gal. jugs. Put approx. 8 back to good fill level. Sorry to get off track here, but the "bird's beak" had got in bad position via previous owner - fan belt rubbed a gap in it. Figures dealer already closed for day. Just to be on the safe side - removed entire air filter system to turbo and cleaned out. Pretty dirty, but it's much better now.