Branson 4020 Hydraulic Problem?

[ronT]

Does anyone else have this problem or is it normal?

I recently had 2 hydraulic hoses blow. One at the control valve and on a different day one near the bucket.(got a oil bath from the one at the bucket /forums/images/graemlins/mad.gif) They control the roll on the bucket. I replaced the hoses and now my problem /question is.

Let’s say you are in a tough spot and can’t back up and you want to use the loader bucket to help push you back. Roll bucket back fully, drop to ground and bring bucket forward to lift or push tractor back. Mine wouldn’t move under load. I have to raise loader up some before it will move with hydraulic power. There is little or no power in cylinders until the bucket is vertical with no back tilt.

Dealer said this is normal /forums/images/graemlins/crazy.gif especially since I have a toothbar on my bucket which changes the angle more. I’m sure it didn’t act this way until after the hoses blew. I also removed the toothbar with no change.

Also 2 of the metal fittings on the hydraulic hoses on each side of the control valve after about an hours use get too hot to touch.

Waiting & waiting for dealer to get back to me. /forums/images/graemlins/frown.gif

Any responses will be appreciated. Thanks

Ron

 

[Big_Lug]

ronT,
Mine also gets very hot on the control valve but I have good rollback. I haven't had any hoses bust or anything.

 

[wallace]

Are the hoses that are getting hot the ones that are connected to the tilt cylinder that won't allow you to rollback under pressure(if your stuck).
If so you have a restriction in the valve and it needs to be looked at, there may be a piece of trash stuck in the port restricting the flow..

 

[ronT]

wallace,

The hoses to loader bucket stay cool. Shown in pic are hoses that get VERY hot. Looks like one to pump and other to transmission.

Not sure if it means anything but also sight glass for fluid level shows full with engine off but after running and warmed up it shows just below low mark. Then returns to full mark with engine off. /forums/images/graemlins/confused.gif

Thanks for your reply,
Ron

 

[ronT]

Big_Lug

I'm not superstitious but knock on wood if no hoses blew.

One wasn't so bad but now a second one. Almost afraid to use it now. The overall hydraulics also seem weaker. Maybe it's the pump.

They are going to replace the control valve it looks like. Been out of service for 2 weeks now...waiting, waiting tapping my fingers. /forums/images/graemlins/tongue.gif

Have a good day.
Ron

 

[SnowRidge]

<font color="blue"> (Not sure if it means anything but also sight glass for fluid level shows full with engine off but after running and warmed up it shows just below low mark. Then returns to full mark with engine off.) </font>

Sounds normal. The 3ph height will make a difference. Check that at both extremes and see if it falls significantly below the low mark when it is running.

 

[SnowRidge]

I don't want to hijack the thread, but who built that toothbar, and how much did it cost?

 

[ronT]

SnowRidge,

Check out this thread, it's been discussed there. Mine was around 450.00 give or take. Toothbar works great...now if only my loader would.

http://www.tractorbynet.com/forums/showflat.php/Cat/0/Board/century/Number/386875/page/0/view/collapsed/sb/5/o/all/fpart/all/vc/1

Ron

 

[SnowRidge]

Thanks, Ron.

 

[MadReferee]

Those two hoses are the pressure hose from the pump (it connects to the loader valve inlet) and the power beyond hose (it connects back into the circuit which eventually gets to the 3pt). The third hose is the return to tank and will only flow oil when one of the loader cylinders exhausts fluid.

The heat on those hoses is normal especially if you have a high flowing pump. If you are flowing more than 7 gpm thru those 3/8" hoses then the hoses are sized too small.

However, the 90 degree pipe fittings could also be acting as mini-restrictors which could cause heat buildup in the fittings. If you can't get a straight fitting to fit properly I might suggest a JIC fitting which would have a smoother less restrictive 90 degree angle.