hydraulic problem

[tractor pimp]

I have a bronson 4520 and my hyd are slow . what's next:

 

[kennyd]

Welcome to TBN

Fluid full?
Fluid clean/clear or foamy/milky looking?
Filter been changed?
Screen cleaned?
Proper fluid?

 

[ArtMech]

OM writes: The lowering speed of the 3-point hitch can be controlled by adjusting the 3-point lowering speed knob (just under the seat between the legs in most tractors).
There are 3 positions of the knob "FAST", "SLOW", "LOCK". Check if this is a case.

 

[Craig Clayton]

Could you supply more facts. ie when I start up in the morning the hydraulics are slow or never get any better, fluid foamy , loader will not lift 1/2 a bail.
Craig Clayton

 

[tractor pimp]

I changed hyd.filter still slow don't know were screen is. Fluid not milkey. When you pull lever back to go up. Pump makes noise builds pressure buckett moves up about 1/2'' and stop pump makes noise builds pressure buckett move up about 1/2'' and so on and so on******

 

[LD1]

First, are we dealing with a 3PH or a front end loader? or both??

By your last post, it sounds like you maybe have air in the system, or it is sucking air from somewhere.

I am not familiar with your model, but do you have an owners manual?

 

[tractor pimp]

both ; it is a branson 4520 I don't have leak's work fine this summer turned cold got slow

 

[LD1]

both ; it is a branson 4520 I don't have leak's work fine this summer turned cold got slow

How cold are we talking??

Does it get any better after the tractor runs for awhile?

It sounds like you could possibly have some water contaminating the hydraulic fluid. The water will freeze and restrict flow in different places.

I would recomend starting by getting it into a heated garage/shop, and drain and replace the hydraulic fluid. But Make sure it is in the heated shop for awhile before you do it. Because if you have chunks of Ice in there, you want them to thaw out before you change the fluid.

 

[kjung17]

work fine this summer turned cold got slow

The tractor could be filled with a hydraulic oil that is too heavy for the ambient temperature. Recently had a 95 hp JD that would not start in cold weather due to heavy parasitic load caused by incorrect oil viscosity in transmission.:thumbsup:

 

[SPYDERLK]

Your pump is having trouble on the intake side [drawing fluid to it]. There may be a suction leak at the filter or in external piping. It may be that the fluid is just too thick from being cold .. or both. Where are you, [how cold is it], what is a Brason?
larry

 

[tractor pimp]

I don't have a leak that i see. Weather hasn't be that cold 50's day's 20's at night.

 

[Craig Clayton]

To tractor pimp
The group is looking over the problem and has asked a few questions. what is needed is for you to describe all the conditions that are going on with the tractor. The other members wil sift through the collection of facts and will very likely spot a direction of testing. IE ( I bought the tractor April ???, hours ??? engine clean, hydraulic oil clean, loader with full load fast at 80 F, pump . Now pump noisey at 50F , loader up slow etc etc.
Craig Clayton

 

[kjung17]

I have a bronson 4520 and my hyd are slow . what's next:

I changed hyd.filter still slow don't know were screen is. Fluid not milkey. When you pull lever back to go up. Pump makes noise builds pressure buckett moves up about 1/2'' and stop pump makes noise builds pressure buckett move up about 1/2'' and so on and so on******

both ; it is a branson 4520 I don't have leak's work fine this summer turned cold got slow

I don't have a leak that i see. Weather hasn't be that cold 50's day's 20's at night.

Agreed, Craig. Here's what we have so far. Filter is clean and oil is not milky. It may be dirty and smelly or could be 90w, not sure. Tractor worked fine this summer. Did it sit in storage or under a tree for 2 or 3 months?

Pimp,
Is your flow better at 50 degrees than it is at 20 degrees? Did this problem occur all at once or was it gradual? Is the problem the same at all engine rpm? How much use does this machine get? Do you have any documentation/ shop manuals for the tractor? Give us ALL of the details, observations, sounds , smells, vibrations.:confused2: