L3130 hst think it is a trans. problum / going to do one more test going to hook it up a grain grinder put a load on the pto / if eng. bogs dowe under this load its a eng. problum / if not its the hyd trans./ just wondering if any has had hst trasn. rebuilt on similar tractor & the cost Thanks
Cost trans rebuild
- Thread starter ferguson
- Start date
done lots of them mostly on ZD series mowers (the early ZD25/28's especially)
tractor hst repairs were very very rare. In fact I can't remember doing but one, and that one was owner neglect. Wrong fluid, lack of maintenance, and then on top of everything else, the battery was low and they were trying to pull start it with another tractor. Ruined a lot of the HST components, such that it was better (for them) to replace it as a unit. I want to say $6500 sounds about right but it's also been a good 10 years ago. L4310 I think it was.
generally if there's a suspected hst problem you want to rule everything else out. Does the engine drop RPM more than normal? If so, then it's an engine related problem (fuel, air whatever). Does engine rpm stay constant and transmission just not pull? Usually a clutch problem (yes some still have clutches in them).
tractor hst repairs were very very rare. In fact I can't remember doing but one, and that one was owner neglect. Wrong fluid, lack of maintenance, and then on top of everything else, the battery was low and they were trying to pull start it with another tractor. Ruined a lot of the HST components, such that it was better (for them) to replace it as a unit. I want to say $6500 sounds about right but it's also been a good 10 years ago. L4310 I think it was.
generally if there's a suspected hst problem you want to rule everything else out. Does the engine drop RPM more than normal? If so, then it's an engine related problem (fuel, air whatever). Does engine rpm stay constant and transmission just not pull? Usually a clutch problem (yes some still have clutches in them).
R P M Drops & then black somke some smoke on satrt up / did the hole fuel delivery sys. even riged up a bottle feed direct to injector pump eng still bogs down when travling / "O" plow by valve cover breither / also did the crack inject line at injectors for rpm drop all 3 the same / air sys. check disassembled all ok there is no slippage or noise in tras. / got tractor 980 hrs now 1015 complete 1000 hr fluids Filters problum started "befor " service / this problum has stesdily increased sense i got it /also no history previous owner deceased / if i can rule trens. / will just change pump & injectors / will do a compression also
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North Idaho Wolfman
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Hooked it upto a 24' brush hog no eng. bog down started at 1800 rpm pulled the throttle to full rpm climed right to 2800 now what
I am really confused, you hook an L3130 to a 24' brush hog and no engine bog down started at 1800 rpm? Please make this easier to understand.
it is hst trans.having a drastic loss of power when traveling slightest hill engine bogs down (will stall if i let it) black smoke / some smoke on start up / went through entire fuel sys.& air intake / even went as far to bottle feed injector pump direct (Gravity from a small tank straped to hood ( no change same problum) /did injector line crack at injectors all 3 droped rpm the same / thats why the hook up to big brush hog to put a load on eng. with out ingaging HST transmisson to see if engine boged down (it did not) got tractor 980 hrs hase 1015 now complete serv. 1000hr fluids & filters ( problum started befor service) problum has steadily increased ( Have no history before 980 hr (previous owner deceased) no noise no slipping highest temp 165 (heat gun on hyd, line) no chugging smooth movement & slow decrease of power (seconds going up slightest grade smooth drop) old hyd. oil was clean (so good saved 5gal for my fergusions) couple of small metial flakes on mag. thats it any ideas
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It is a farm brush hog 24 feet 8' center 2 fold down 8'What size Brush hog? Must be a relatively large typo...
Wow! That seems like a lot cutter to be behind a L3130....Guess you are cutting very short stuff.
Now I don't know much about brush hogs, but it seemed like a 5 foot brush hog was about max for my b2910, with 21 PTO HP...that is what I bought.
Is a 24 foot BH on a small tractor like an L3130 normal? Can't imagine it is but I don't know. I would have guessed the recommended PTO HP for that cutter would be close to 100 HP. BUT AGAIN, I do not know.
just hooked to to put a load on the eng. without the hst trains haveing power problum just test
I have run into similar customer complaints in the past.
HST's don't generally fail in the manner you are describing. They generally fail in that the engine revs, the hst doesn't go anywhere or is very, very weak to move. And if that's the case usually the HST and hydraulic filters will be full of material that came out of the hst. So with that, if you suspect, take the filter off, cut it open and inspect it.
In the past on the GL 30 series I have messed with that had these complaints, it was almost always either an engine issue or a fuel issue. One time I can remember a hydraulic issue pulling power out of the engine which made one think that the transmission may have been an issue. Repair of the hydraulic system solved the customer's complaint.
Ideally you would diag with a dyno. If it makes rated horsepower on the dyno, the engine is not suspect. But that doesn't necessarily test the brakes, transmission etc. Yes a dragging brake can cause exactly what you describe.
Does it make any difference if it's in low medium or high range? You "ARE" using low or medium when climbing hills or pulling any ground engaging implements, right?
Do a compression test and compare it to the WSM's spec.
If compression is excellent, look into your fuel delivery system, this includes the nozzle assemblies as well as the pump. Before you pull the pump off/out have a look at the 2 governor springs. I've seen them broken in the past.
HST's don't generally fail in the manner you are describing. They generally fail in that the engine revs, the hst doesn't go anywhere or is very, very weak to move. And if that's the case usually the HST and hydraulic filters will be full of material that came out of the hst. So with that, if you suspect, take the filter off, cut it open and inspect it.
In the past on the GL 30 series I have messed with that had these complaints, it was almost always either an engine issue or a fuel issue. One time I can remember a hydraulic issue pulling power out of the engine which made one think that the transmission may have been an issue. Repair of the hydraulic system solved the customer's complaint.
Ideally you would diag with a dyno. If it makes rated horsepower on the dyno, the engine is not suspect. But that doesn't necessarily test the brakes, transmission etc. Yes a dragging brake can cause exactly what you describe.
Does it make any difference if it's in low medium or high range? You "ARE" using low or medium when climbing hills or pulling any ground engaging implements, right?
Do a compression test and compare it to the WSM's spec.
If compression is excellent, look into your fuel delivery system, this includes the nozzle assemblies as well as the pump. Before you pull the pump off/out have a look at the 2 governor springs. I've seen them broken in the past.
North Idaho Wolfman
Moderator
Staff member
Lifetime Member
Equipment
L3450DT-GST, Woods FEL, B7100 HSD, FEL, 60" SB, 743 Bobcat with V2203, and more
Make sure you remove and save all the very thin shims under the injection pump as you will need to reuse them as that is how the timing is set!