cant release button on hydraulic hose on loader

Tomjim

I cant release the pressure on the hydraulic hose on the grab.

The button is inside the hose (its not at the top) and I tried pushing the button in with an iron/pen but no success.

As hose is on grab there is no point releasing the oil pressure on the tractor.

Any ideas

emaherx

Tomjim wrote: »

I cant release the pressure on the hydraulic hose on the grab.

The button is inside the hose (its not at the top) and I tried pushing the button in with an iron/pen but no success.

As hose is on grab there is no point releasing the oil pressure on the tractor.

Any ideas

Loosen hose with spanners to release pressure.

larthehar

emaherx wrote: »

Loosen hose with spanners to release pressure.

Just make sure that the grab is in a stable state.. if it is open prop the blade or you will lose a lot of oil and run the risk of the grab closing on someone or something!

Say my name

Turn the tractor off and turn the key back on so that there's lights on the dashboard without the engine running. Then press the third service button on the loader joystick and give the joystick a toggle or if you have levers toggle the one for the third service to take the pressure off???

Who2

Tomjim wrote: »

I cant release the pressure on the hydraulic hose on the grab.

The button is inside the hose (its not at the top) and I tried pushing the button in with an iron/pen but no success.

As hose is on grab there is no point releasing the oil pressure on the tractor.

Any ideas

Disconnect the hose from the grab and get a new end fitted . Or am I missing something

farawaygrass

Say my name wrote: »

Turn the tractor off and turn the key back on so that there's lights on the dashboard without the engine running. Then press the third service button on the loader joystick and give the joystick a toggle or if you have levers toggle the one for the third service to take the pressure off???

We do this everytime

Snowfire

Just wondering how lads manage to take off shear grabs without damaging the blade, I know the corner bars are longer to protect the blade, but I’d prefer not to be getting the corners blunt either, so I usually park it up on a pallet. Was thinking bout putting a shut off valve on the hydraulic connection and leaving the blade slightly open so just the tynes would be on the ground...?

davidk1394

Snowfire wrote: »

Just wondering how lads manage to take off shear grabs without damaging the blade, I know the corner bars are longer to protect the blade, but I’d prefer not to be getting the corners blunt either, so I usually park it up on a pallet. Was thinking bout putting a shut off valve on the hydraulic connection and leaving the blade slightly open so just the tynes would be on the ground...?

Do it the way your doing it. Corner bars are there for that reason. Wouldn't like a shear grab half open on a farm for the sake of a bit of edge. Heard of a few nasty injuries with them. Have one ourselves

Snowfire

davidk1394 wrote: »

Do it the way your doing it. Corner bars are there for that reason. Wouldn't like a shear grab half open on a farm for the sake of a bit of edge. Heard of a few nasty injuries with them. Have one ourselves

Ya, would be quite dangerous for man and beast

Zr105

Tomjim wrote: »

I cant release the pressure on the hydraulic hose on the grab.

The button is inside the hose (its not at the top) and I tried pushing the button in with an iron/pen but no success.

As hose is on grab there is no point releasing the oil pressure on the tractor.

Any ideas

Im guessing you mean its a female quick release coupling? best way is to get the spanners out and slack a fitting somewhere on the pipe, once you loose a tiny dribble of oil itll be free.

if your stuck get a blunt punch or small pin sit it carefully against the nipple inside the fitting then a sharp tap of a hammer or off the grab frame will generally let off the oil, just keep it pointed away from your face whilst doing it.

Snowfire wrote: »

Just wondering how lads manage to take off shear grabs without damaging the blade, I know the corner bars are longer to protect the blade, but I’d prefer not to be getting the corners blunt either, so I usually park it up on a pallet. Was thinking bout putting a shut off valve on the hydraulic connection and leaving the blade slightly open so just the tynes would be on the ground...?

leave ours off on a pallet, its a good heavy seed pallet with the extra timber down the outside. we used to have a few lengths of timber sitting on a rear tractor tire but it wobbled around a lot when trying to hook it up.

Muckit

davidk1394 wrote: »

Do it the way your doing it. Corner bars are there for that reason. Wouldn't like a shear grab half open on a farm for the sake of a bit of edge. Heard of a few nasty injuries with them. Have one ourselves

A hood is on my list of things to gunter. Basically a 3 sided box with a roof. Leave it in corner of yard or in machinery shed and drive grab into it. Like a knife block!

Mooooo

Snowfire wrote: »

Just wondering how lads manage to take off shear grabs without damaging the blade, I know the corner bars are longer to protect the blade, but I’d prefer not to be getting the corners blunt either, so I usually park it up on a pallet. Was thinking bout putting a shut off valve on the hydraulic connection and leaving the blade slightly open so just the tynes would be on the ground...?

Park it slightly open here turn off loader and release prrssure on hydraulics and the corners barely hit the ground or else leave silage in it. In winter if taking it off drop if in front of pit on loose silage.

patsy_mccabe

Is the pressure trapped because the rams are either fully open or fully closed?
Maybe leave it slightly open in future.

C4d78

Similar problem with pressure on hyd hoses when putting on shear grab here for last week or so. It can be a struggle to get hoses on but even when they’re on oil is leaking out of the connections when working or parked up after work.
Any ideas what’s wrong?? Connections are only few months old

Dakota Dan

C4d78 wrote: »

Similar problem with pressure on hyd hoses when putting on shear grab here for last week or so. It can be a struggle to get hoses on but even when they’re on oil is leaking out of the connections when working or parked up after work.
Any ideas what’s wrong?? Connections are only few months old

Maybe the o rings are damaged.

TheFarrier

Zr105 wrote: »

if your stuck get a blunt punch or small pin sit it carefully against the nipple inside the fitting then a sharp tap of a hammer or off the grab frame will generally let off the oil, just keep it pointed away from your face whilst doing it.

I'd advise against this.

Thought I was a genius the day I thought of it to release a hose that removed itself at an inopportune moment.
Until I went to re attach hose and the nipple had deformed just enough to prevent proper contact.

Maybe I'm just rough but it was enough of a pain that day that I'll just crack a hose with a spanner in future

patsy_mccabe

I have worked with industrial hydraulics a lot and I'm told by an experienced service guy (US based) that these type of hydraulic fittings are the best around. It's a simple design, parallel faces with just an o-ring providing the seal. No metal on metal sealing, or taper fittings. If the seal leaks simply replace the o-ring.


http://ph.parker.com/us/en/o-ring-face-seal-tube-fittings-and-adapters-seal-lok-o-ring-face-seal-fittings

_Brian

I find if there is any pressure on the loader it’s put back into the ram, as the connection is blank the pressure is against the button. Only happens with the bucket ram on ours.

Sometimes have to shift the loader to take the weight of the bucket and it’s ok then.