6400 JD Blowing hoses

[Old Pipe Welder D]

Year after year the larger hoses near the back around the filter seem to want to blow off.
They must be some kind of return hyd hose 1" id aproxx...with gear clamps (low pereasure)
It makes a real mess when they blow off
What would make them pop off from the nipple?
The clamps are good and tight.

Thanks

 

[fuel doctor]

Year after year the larger hoses near the back around the filter seem to want to blow off.
They must be some kind of return hyd hose 1" id aproxx...with gear clamps (low pereasure)
It makes a real mess when they blow off
What would make them pop off from the nipple?
The clamps are good and tight.

Thanks

Stopped up vent . Depending on what size tractor some of the vents are on the cap where you put the fluid in

 

[Old Pipe Welder D]

Stopped up vent . Depending on what size tractor some of the vents are on the cap where you put the fluid in

Thanks I will have a look at the cap

 

[fuel doctor]

Thanks I will have a look at the cap

What size and what kind of tractor.I should of asked.because some have a vent tube on transmission that I have seen bugs stop up the vent.on some of j.d tractor the vent is made in the cap . If you pull the cap stand it upside down you will see a groove that gets packed in dirt

 

[Zebrafive]

Is it hose 8 or 9 in the first drawing? I see in JD parts they have an oil line conversion kit that does not use hose clamps on the hoses. Maybe this is a known problem and this is JD's solution?

 

[Old Pipe Welder D]

It was hose 9 where clamp 22 is.

But I think Fuel Doc Figured it out....What I did was losen off the fill cap and started it up...And now the Hyd warning lamp is not on any more.

It also made a funny air noise...like it was releiving preasure.

1 other thing was before the hyd oil looked sudsey...as if it was doing alot of splashing around in the system.

I'm going to clean up that fill cap today.

Thanks for that drawing Zebra...and thank Fuel Doc...for that tip. I have had 3 servise calls on that 6400 John Deere and not one of the sevice guys mentioned anything about a vent.
Its not a fun day when your doing hay and lose 10 gals of oil all over the field. I realy appreciate the help

 

[Old Pipe Welder D]

Here's that cap before...It looks a bit plugged up

 

[fuel doctor]

Here's that cap before...It looks a bit plugged up

Well glad I could help. Your cap look pretty stopped up.

 

[Old Pipe Welder D]

Still got problems.

Had to go a get 5 hay wagons out of the snow today...and 5 mins down the road...The hyd light starts flashing.

So theres still something not working right...could it be the filters?

 

[fuel doctor]

Still got problems.

Had to go a get 5 hay wagons out of the snow today...and 5 mins down the road...The hyd light starts flashing.

So theres still something not working right...could it be the filters?

Yep I would start with the filters there should be 2 one at right side rear axle the other on the transmission. On most there is a washout screen in the transmission. You might already no you need to use j.d fluid to keep the break disc from coming apart

 

[jenkinsph]

Yep I would start with the filters there should be 2 one at right side rear axle the other on the transmission. On most there is a washout screen in the transmission. You might already no you need to use j.d fluid to keep the break disc from coming apart

When looking at pictures of the cap yesterday I was wondering if the debris on the cap was coming from the brake discs. Hope not for the OP's sake but that is a lot of drbris if it is clogging the filters, not a whole lot of places it could come from.

 

[fuel doctor]

When looking at pictures of the cap yesterday I was wondering if the debris on the cap was coming from the brake discs. Hope not for the OP's sake but that is a lot of drbris if it is clogging the filters, not a whole lot of places it could come from.

Most of the time it is dust and hay dust that gets in the vent and the oil just makes it stick in the vent on the cap

 

[TJ Noonan]

Year after year the larger hoses near the back around the filter seem to want to blow off.
They must be some kind of return hyd hose 1" id aproxx...with gear clamps (low pereasure)
It makes a real mess when they blow off
What would make them pop off from the nipple?
The clamps are good and tight.

Thanks

Good day this is quite an issue with JD I have seen loads of times it is a blocked hydraulic filter caused by brake debris. If you have a lot of hay around top off diff housing water and moisture seeps in threw breather and water gets trapped behind brake pistons allowing them to stick on slightly hence wearing brake discs or water lifts glue from brake discs. First job is drain diff oil pull suction screen will be full off debris. Then hopefully it has only lifted glue only needs to replace discs and if at hay often breather extensions can be bought to lift breather higher

 

[marekmh]

Have you ever found your problem on the 6400

 

[mastercraftka]

Yes whatever happened here I am having the same issues.