New Member that needs help.

[Sue3]

Hi, I'm new to this form and am hoping someone out there will be able to help me. I have a Kubota M120. I just drained my hydraulic system today and flushed it with diesel, changed all filters (3) and refilled with Kubota UTD. The loader worked somewhat during the diesel flush but now that everything is put back together and refilled, nothing works, not the loader nor the 3PTH. I scanned this site for bleeding instructions but everyone says they are self bleeding. Any suggestions?? Thanks.

 

[farm boy00]

Hi, I'm new to this form and am hoping someone out there will be able to help me. I have a Kubota M120. I just drained my hydraulic system today and flushed it with diesel, changed all filters (3) and refilled with Kubota UTD. The loader worked somewhat during the diesel flush but now that everything is put back together and refilled, nothing works, not the loader nor the 3PTH. I scanned this site for bleeding instructions but everyone says they are self bleeding. Any suggestions?? Thanks.

How long have you ran the tractor for?? Is it a hydrostatic?? Go post this in the hydraulic section to get better results

 

[mddorange]

:welcome:
To TBN Sue3. Sorry to hear about your problem. Is this the first time the fluid has been changed?

 

[Sue3]

Yes. I have done the filters often and go through at least 5 gallons of oil a season, but have never changed it.

 

[Sue3]

It's shuttle shift. I've had it since 2004. I'll try the hydraulic section, thanks.

 

[TBN Support]

Welcome to the forum, Sue. :welcome:

I'm going to move this thread over to the hydraulics section for you. Best of luck!

 

[Tx Jim]

:welcome:
What was the reason that hyd system flushed with DIESEL??? Yes hyd systems are self bleeding by cycling hyd functions.

 

[b7610hsd]

I think you messed up running Diesel in your hyd system, probably not good for the pump.

 

[J_J]

Diesel has been used to flush hyd system for a long time. .

It is cheaper to use diesel than expensive hyd fluid.

The diesel is usually mixed with other things to remove sludge and water, etc.

 

[Sue3]

The dealer explained to me exactly what I had to do and that's what I did to trouble shoot my problem. 10 gallons of diesel is way less expensive than UTD but I still hated throwing it out after. Now they say it must be the pump. Apparently it must be so weak it can't pick up the vacuum after the flush. So one is on order (from Japan) as my standing hay is STILL waiting. Glad to have found this forum, wish I had a less expensive outcome this time. Thanks!

 

[J_J]

Just because the pump did not pick up the fluid, does not mean a bad pump.

Your tank may have a blockage in it.

The sump filter may be clogged.

The tank may have a vacuum in it with no weep hole.

Remove the pump intake hose and see if the in port is flooded, and fluid flows freely out the suction hose.

You should have tested or had the pump tested before ordering a new one.

 

[Leejohn]

You might of jumped the gun.

 

[PhysAssist]

Just because the pump did not pick up the fluid, does not mean a bad pump.

Your tank may have a blockage in it.

The sump filter may be clogged.

The tank may have a vacuum in it with no weep hole.

Remove the pump intake hose and see if the in port is flooded, and fluid flows freely out the suction hose.

You should have tested or had the pump tested before ordering a new one.

Hi Ms. Sue,

Welcome to TBN!!

J.J. is our resident hydraulics expert [even though he is very humble about it] so what he says is very often the thing to listen to.

Did the dealer suggest ordering a new pump without testing the old one?

Best of luck with both your Kubota problem, and your hay!

Thomas

 

[oldpilgrim]

Yes. I have done the filters often and go through at least 5 gallons of oil a season, but have never changed it.

what do you mean you 'go through' 5 gallons a season.

 

[J_J]

Yes. I have done the filters often and go through at least 5 gallons of oil a season, but have never changed it.

Did your hyd work good before you changed the fluid?

You must have an external leak.

Say you had a leak that was 10 drops per minute.

To leak 1 gal, it would take about 76.8 hr or 3.2 days,

To leak 5 gal ,would take about 16 days of continuous dripping.

 

[Sue3]

Did the dealer suggest ordering a new pump without testing the old one?

Thomas

No the shop foreman was going on the history of my problems and when the changing the fluid didn't work he said it has to be the pump. Which from reading the answers here I tend to agree with maybe jumping the gun. However, it is a problem that has been getting progressively worse for over 18 months and it is worse in hot weather and worse still when the fluid gets hot. It worked much better all winter doing hours of snow moving. It was almost normal when it was still cold and slow on the up with a heavy load when the fluid got hot but it did work. The last straw last week was when it couldn't open the gate of the baler to eject a bale. I have been using this dealer for years and I trust them. They wouldn't get me to order a pump unless they really figured that's the problem. And it would cost more than half the price of the pump to get the tractor to them and around $400 to have a technician come to the farm to test it. The flush and the filters were already around $400. I'm hoping they don't have to replace all the fluid and filters again for the change over, I haven't asked yet.

 

[J_J]

Did anybody ever do a pressure test?

$400 is way excessive for a flow and pressure test which takes about 30 min.

You could have purchased a flow meter and pressure test kit for that money.

 

[Tx Jim]

While tractor is running apply ""short bursts of compressed air"" into hyd filler hole utilizing a shop rag to block off remainder of filler hole. These short bursts of air might prime hyd pump & get it to start pumping oil.

 

[PhysAssist]

No the shop foreman was going on the history of my problems and when the changing the fluid didn't work he said it has to be the pump. Which from reading the answers here I tend to agree with maybe jumping the gun. However, it is a problem that has been getting progressively worse for over 18 months and it is worse in hot weather and worse still when the fluid gets hot. It worked much better all winter doing hours of snow moving. It was almost normal when it was still cold and slow on the up with a heavy load when the fluid got hot but it did work. The last straw last week was when it couldn't open the gate of the baler to eject a bale. I have been using this dealer for years and I trust them. They wouldn't get me to order a pump unless they really figured that's the problem. And it would cost more than half the price of the pump to get the tractor to them and around $400 to have a technician come to the farm to test it. The flush and the filters were already around $400. I'm hoping they don't have to replace all the fluid and filters again for the change over, I haven't asked yet.

Hi Sue,

I wasn't meaning to impune your trusted dealer, but I have had many negative experiences with service people who threw new parts or other putative solutions at problems without applying any diagnostic thought process to rationally look at the most probable causes and rule them out before spending money unnecessarily.

Unfortunately, the problem isn't limited to mechanics, as some of my medical colleagues have a similar approach.

Thomas

 

[Leejohn]

Hi Sue,

I wasn't meaning to impune your trusted dealer, but I have had many negative experiences with service people who threw new parts or other putative solutions at problems without applying any diagnostic thought process to rationally look at the most probable causes and rule them out before spending money unnecessarily.

Unfortunately, the problem isn't limited to mechanics, as some of my medical colleagues have a similar approach.

Thomas[/QUOTE


That is done alot around here. I was in service repair for 30 years and never done that. If I didn't have service info I needed and would guess , if I was wrong the part came back off. Not around here you pay for the part. I feel if you don't have the service info or schooling don't work on it. They don't even give you the old parts, you have to ask for them.
When I first came down to Mo. my car had a miss. Took it to a place to get some troubleshooting done and I ask if they had the machine to do it. The owner said the newcar dealer don't even use them. Should of stopped right there, but didn't because at the time I didn't even know there was a dealer in town. Well they put a new coil pack on and new plug wires, car ran good. Made them give me the old parts went home checked the coil pack and it was good. Used it later on another car. I went back and talked to the owner and told him, and I didn't like paying for his people schooling.