JD 2030 brake bleeding procedure

[mdm1]

I'm not a JD guy so I don't know much about them. My friend has a 2030 and needs to bleed the brakes. I understand the bleeder valves are on the rear axles. It sounds pretty straight forward. Have to have the tractor at idle and someone pumping and holding the brake pedal down and opening the valve. Where do you add the fluid? Do I understand that it runs off the hydraulic system? Sorry if these are basic questions but I don't know the tractor. Thanks for any help for me and my friend.

 

[wore out]

I'm not a JD guy so I don't know much about them. My friend has a 2030 and needs to bleed the brakes. I understand the bleeder valves are on the rear axles. It sounds pretty straight forward. Have to have the tractor at idle and someone pumping and holding the brake pedal down and opening the valve. Where do you add the fluid? Do I understand that it runs off the hydraulic system? Sorry if these are basic questions but I don't know the tractor. Thanks for any help for me and my friend.

The hydraulic system continuously replenishes the reservoir on the brake valve while the engine is running.

 

[mdm1]

Thank you!

 

[JIM MN]

Here from the operators manual . Start and run engine, clutch engaged for at lease two minutes to fill brake valve reservoir. Attach a piece of clear plastic tube to the left axle top bleed screw and put other end of tube into hydraulic oil fill hole. Unscrew left bleed screw 3\4 turn, slowly depress left brake pedal and hold until you get bubble free oil returning. Hold pedal down and close bleed screw. Remove bleed tube and do the right bleed screw.

 

[mdm1]

Thank you very much. That's how I understood it. My tractors are all mechanical brakes.

 

[Fixingfarmer]

Steering working ok? Does it have a 3 point that works well? It can be a sign of other issues with the hydraulic system

Not saying you don’t have a brake problem but since they are supplied by continuous pressurized oil very rarely will bleeding do much other than if the tractor has been split or…

 

[Tx Jim]

Steering working ok? Does it have a 3 point that works well? It can be a sign of other issues with the hydraulic system

Not saying you don’t have a brake problem but since they are supplied by continuous pressurized oil very rarely will bleeding do much other than if the tractor has been split or…

Please explain by what you mean when you state [/quote] they are supplied by continuous pressurized oil very rarely will bleeding[/quote].

Brake reservoir on 2030 is filled by trans pump then the oil in brake reservoir is manually applied to each side of axle housing when each pedal is depressed. Sometimes bleeding the brakes aids in brakes functioning better.

 

[Fixingfarmer]

Please explain by what you mean when you state

Usually if you pull those lines off at the axles the valves will leak some by they will make a puddle on the floor if you start it with the lines off at least the ones I’ve done. Maybe they were all leaking but both times I’ve forgotten to put the lines on they leaked when started. And each time I’ve had to mess with the brakes where they felt spongy it’s required a hydraulic pump or if they just haven’t worked at all pedal to the floor it’s been a brake seal.

Perhaps they don’t all work that way you certainly have seen more than me but there’s one tractor in particular around here where the owner is certain his brakes need bled twice a year and I’m reasonably certain he’s losing a transmission pump…

 

[Tx Jim]

JD 2030 brakes that require bleeding twice a year could be caused from leaking brake piston seal in rear axle housing. Unless seals are leaking on brake pedal pistons the only way hyd oil should exit open brake line is if brake valve piston is depressed by depressing 1 or both brake pedals.

I highly recommend performing good trans pump & associated parts hydraulic diagnostics before condemning trans pump due to brakes needing bled twice annually.

 

[Fixingfarmer]

I probably had bumped pedals when splitting I’d almost guarantee it. But it’s also not like it’s completely gravity fed relying on that pedal entirely the additional fluid has some low pressure. If it needs bled there’s likely a problem if it hasn’t just been worked on

As far as the troubleshooting I agree but if it’s accompanied by steering chatter and hydraulic chatter when lifting the 3 point getting worse over time and in that particular case a sporadicly functioning remote for his Hesston mower one can perhaps surmise that bleeding the brakes twice a year one might not expect brake symptoms to improve no matter how many times you pull the axle apart and look for the pinched o ring.

I’m just saying look out for ignored things sometimes people are willing to overlook a lot steering and 3 point wise on those tractors especially if it has no loader. It might be time for more troubleshooting.

 

[Tx Jim]

My guess is this 2030 has an internal high pressure leak. I suggest using a laser thermometer after tractor has reached operating temp check temp of each hyd control valve. Control valve with highest temperature is the likely culprit.

Another hyd component that can cause hyd chattering with an internal leak is 3pt control valve.
With hyd oil at operating temp, engine operating at idle speed, 3pt raised look in hyd filler hole behind seat for moving/spraying oil.

 

[Fixingfarmer]

Those are good thoughts as well when it was split to do the 2 speed it actually lost a bushing in the housing. That tractor had just about every steel internal line previously brazed. At the time the customer declined when I asked if he wanted them replaced all (and when I mean all I mean every single one was brazed) I think he is dragging feet because he knows what it takes to get there and then where should he stop if the pump has been sucking air and less oil worse and worse probably transmission pump time as well and if he waits long enough he’s going to get a hydro pump as well so it’s been fun but I didn’t mean to derail the ops thread quite this bad

 

[mdm1]

Got back to my friend's tractor today. The brake bleeding went well considering. Now for the story. Tom's son-in-law as greasing the tractor and thought the bleeders were zerks. Wouldn't take grease so he removed them and pumped grease into the brakes. Took a while to get the grease out but he now has brakes. I believe you tell the results of what happened. Again thanks for the help. Mike

 

[Fixingfarmer]

That’s a new one!