kennyd
Advertiser
David, the 4110/4115 were very popular back in the day with many units sold, I've never read of rear drive failures such as this before. Not saying they are perfect-but the trannys are pretty bullet proof.
4110 Final Drive
- Thread starter David Berglund
- Start date
- Views: 23115
OP
David Berglund
Member
OK,
Good to know, even thouth it makes me even more comfused as to why this has happened in my case. This was an ensurance "total loss" unit, that I managed to byu at a very low price with the hope to manage to repair it.
This next question may be hard or impossible to answer considering they usually never brake, but are this system known to be sensitive to comtaminated oil?
This is how my hydro intake filter looks like. On the inside there were no chips at all but there was a very thin coat of fine fine black aluminium residue.
I assume that the flow shart on the hydro is Pick-up filter -> Primary pump -> Hydro Oil filter -> Actual hydrostatic motor? Is this correct?
Good to know, even thouth it makes me even more comfused as to why this has happened in my case. This was an ensurance "total loss" unit, that I managed to byu at a very low price with the hope to manage to repair it.
This next question may be hard or impossible to answer considering they usually never brake, but are this system known to be sensitive to comtaminated oil?
This is how my hydro intake filter looks like. On the inside there were no chips at all but there was a very thin coat of fine fine black aluminium residue.
I assume that the flow shart on the hydro is Pick-up filter -> Primary pump -> Hydro Oil filter -> Actual hydrostatic motor? Is this correct?
OP
David Berglund
Member
Just got a confirmation from JD that the number of teeth and also the outer diameter is in fact the same.
They told me that the tooth width was 10mm instead of my 35mm but this must simply be a misunderstanding. First because a 10mm gear width woudn't do the job or correspond to the catalogue drawing view, but also I found that the distance between each and every other tooth is precicely 10mm.
Conclusion: I can from now on consider it to be the same tranny if not entire tractor without worries
TBC
They told me that the tooth width was 10mm instead of my 35mm but this must simply be a misunderstanding. First because a 10mm gear width woudn't do the job or correspond to the catalogue drawing view, but also I found that the distance between each and every other tooth is precicely 10mm.
Conclusion: I can from now on consider it to be the same tranny if not entire tractor without worries
TBC
kennyd
Advertiser
ALL hydrostatic trannys are sensitive to this, they are basically large pumps that move varying volumes of oil to move the machine. The picture you show is bad, but I dont think that cause your failure, but resulted from it.
Most OEM's recommend a tranny service at the first 50 hours to clear the debris from the manufacturing process-looks like your may have never been done.
OP
David Berglund
Member
I agree that it is indeed a result from the failure rather than the reason.
I have 3 other Hydro Tractors, 2 Bolens and another one, so I'm familiar with the mechanism. However I was wondering if theese JD's are known to have a specifically sensitive hydro. But I guess your response in #11 might be answer enough.
The only information I've got regarding what happened is that they found an oil pool under the left hand final drive and when investigating it they found a hole punched underneeth, probably by one of the bearing balls getting stuck under the gear. So as to my best knowledge the tractor was running up until this, and hence I think that my means to success would be to change theese specific parts that I find have broken, and then focus on some serious cleaning.
However there is quite a big difference in splitting the entire mechanics in the tranny and hydro, or just focusing on specific areas.
I guess I will have a better clue when I've removed the filters and dissected them, but my goal would be to fokus on the rear parts where the actual visual damage is done, and than do 2-3 very tight filter and oil changes in the beginning. Perhaps only 5 minuts of running inbetween the first two.
At least thats the plan.
Or should I rather disassemble everything - better safe than sorry?
I Payed equal to $1500 for the tractor with 100 hours on the rear tires so I think it was a very good deal regardless of what I might find.
Here it is with the tires as counter weight for it not to tip over
I have 3 other Hydro Tractors, 2 Bolens and another one, so I'm familiar with the mechanism. However I was wondering if theese JD's are known to have a specifically sensitive hydro. But I guess your response in #11 might be answer enough.
The only information I've got regarding what happened is that they found an oil pool under the left hand final drive and when investigating it they found a hole punched underneeth, probably by one of the bearing balls getting stuck under the gear. So as to my best knowledge the tractor was running up until this, and hence I think that my means to success would be to change theese specific parts that I find have broken, and then focus on some serious cleaning.
However there is quite a big difference in splitting the entire mechanics in the tranny and hydro, or just focusing on specific areas.
I guess I will have a better clue when I've removed the filters and dissected them, but my goal would be to fokus on the rear parts where the actual visual damage is done, and than do 2-3 very tight filter and oil changes in the beginning. Perhaps only 5 minuts of running inbetween the first two.
At least thats the plan.
Or should I rather disassemble everything - better safe than sorry?
I Payed equal to $1500 for the tractor with 100 hours on the rear tires so I think it was a very good deal regardless of what I might find.
Here it is with the tires as counter weight for it not to tip over
OP
David Berglund
Member
Realised I had no picture on it complete in this thread.
Here it is
Here it is
RG1
Platinum Member
That is definitely a 4110 in red Yanmar clothes. When you got it, did you pay attention as to whether or not the oil fill cap in front of the seat was installed and/or tight? It's possible that some water got in there and created havoc. Did the fluid (if there was any left in the trans) show signs of water contamination at all?
OP
David Berglund
Member
Hi!
Yes I think the only differences is that the Hako has a front lift and a expanded hydraulic system.
The hydraulic have 2 double acting and 1 singel acting aux circuits. I don't think the JD has this right?
Yes I think the only differences is that the Hako has a front lift and a expanded hydraulic system.
The hydraulic have 2 double acting and 1 singel acting aux circuits. I don't think the JD has this right?
RG1
Platinum Member
The JD's come with two SCV's at the front of the right step/foot rest. anything more is optional.
With the name of David, I take it that that is not you on the tractor. Is that a co-worker, wife, daughter?
With the name of David, I take it that that is not you on the tractor. Is that a co-worker, wife, daughter?
OP
David Berglund
Member
A co-worker that was assigned the very imported job of modeling for the tractor
