Hydraulic problem

[hans8011]

Hi!

I have a zetor 8011, year 1973. with a front end lift.

The problem is that the front lift suddenly stopped to work.
I found out that the power steering is leeking (pretty much).
I think these system are connected. Is that true??
If they are. I guess that is the reason why my front lift does not work??
1.) Can some one help me out here? Are they connected?

2.) How hard is it to remove the air filter, the water cooler and finally the steering power cylinder?

Regards, Hans

 

[treaney]

Hi!

I have a zetor 8011, year 1973. with a front end lift.

The problem is that the front lift suddenly stopped to work.
I found out that the power steering is leeking (pretty much).
I think these system are connected. Is that true??
If they are. I guess that is the reason why my front lift does not work??
1.) Can some one help me out here? Are they connected?

2.) How hard is it to remove the air filter, the water cooler and finally the steering power cylinder?

Regards, Hans

Hi Hans,

1. When you say "front end lift" do you mean a 3 pt lift or do you mean a front loader? If it's the first, then this may be operated by the power steering pump but I would have thought this unlikely. If the second, then it's off the main hydraulic pump. To sort this out, follow the pipes and see where they go to. Let us know and we'll see if we can help.

2.) How hard is it to remove the:

air filter - easy

the water cooler - radiator??? - not difficult but it is heavy

the steering power cylinder - tricky, awkward and heavy. There are a lot of ball bearings inside the orbiter unit. Do touch unless you absolutely have too.

 

[hans8011]

Hi!

I mean a front loader. The pipes from the front loader is connected to the pipes in the rear end of the tractor which ends below the cabin behind the drivers seat.

When I look at the power steering oil container on the right side of the engine. There is a pipe from the container which ends in the "gear box"??

/Hans

 

[dave_peters]

The steering oil tank is on the right side of the tractor. The pump is in the clutch housing so the pipe you see is the feed to the pump. the pressure side goes straight to the actuator unit and the oil then returns via the filter to the tank.
The main hydraulic system is quite seperate. Do the link arms lift is the next step.if not, Always supposing that you havn't inadvertantly put the External services spool valve in neutral or turned off the hydraulic pump with the lever under the left side of the cab behind the clutch, then the next thing to check is the gearbox oil level, filler with a dipstick on it is between the gearsticks on the cab floor, may be on an older tractor quite low down on the gearbox top. remove with a socket.
If thats OK then your pump has run dry and is cavitated. you can add a bit extra oil to the gearbox, but not too much as you run the risk of getting oil on the clutch or brakes, and if that doesn't work then you have to slacken the 30mm banjo bolt on the side of the pump to let air out while the engine is running.
If the arms lift and the spool lever is in the correct pos. for constant pumping then your trouble is in the loader spool valve.
sorry this is a bit long, Dave