Twin Busch 2 post lift problem,

[Paulbarrett]

Bought myself a two post for the workshop, 4T drive through.

I’m kit convinced it’s working correctly. The hydraulic cylinder riposte the power pack seems lazy compared to the power pack side. Which has caused a few binding issues with the top and chain.

All built up and had a go setting up tensions of cables etc went through cycling over 10 times after a call to Kettering branch where I got it from said get a vehicle on it to test through height stages.
The vehicle seemed to lift power pack side first and then went out of balance again with the lock stops, I retensioned to match them but still issues.

They are now sending an engineer Friday hopefully to take a look.

I have a feeling there is air in the cylinder that isn’t purging. But they seems to have auto type air purge points at the top of the rams with what looks like a small gauze behind a circlip.

Can anyone recommend something on the meantime I could try as I’m out of ideas.
All the lines are kink free and contacted as per instruction.

 

[Paulbarrett]

The model is TW242PEB4.3

 

[Onoff]

Have you got the manual for it?

 

[Paulbarrett]

Yes, it does say in one line to bleed air from valve if needed. But no other instruction. Quite a poor part translated set of instructions tbh. Although most of it common sense

 

[Paulbarrett]

Their YouTube vids don’t explain how either.
The guy over the phone could t answer either

 

[Onoff]

This one? Page 8 talks about setting up ref the synchronization:

 

[Paulbarrett]

Yep been through all that but the opposing ram is raising at a Lower rate the power side. So the power side is doing all the work at around halway. Then when the lift stops at maximum the opposing ram stutters it way up

 

[Onoff]

Usually refer to them as control post and slave posts. You just about get away with that still!

 

[Onoff]

Any use, different make but says bleed the slave side first:

This assuming the synchronisation side is set up properly.

 

[Paulbarrett]

Usually refer to them as control post and slave posts. You just about get away with that still!

It’s One line feeding both from T piece so if working correctly both should be doing the same amount of work rather than a slave in my eyes

 

[Paulbarrett]

Any use, different make but says bleed the slave side first:

This assuming the synchronisation side is set up properly.

That’s one I found, but no use.

 

[Onoff]

It’s One line feeding both from T piece so if working correctly both should be doing the same amount of work rather than a slave in my eyes

Agreed. I was alluding to the non pc terminology!

 

[Onoff]

Could it be a fault with the slave ram letting by? Change them over and see?

 

[Paulbarrett]

Could it be a fault with the slave ram letting by? Change them over and see?

That was my first thought.
But I’ve got a feeling it’s air.

I’m going to cycle it a load more tomorrow and put another car on it see what happens.
I could crack off the low down feed union and see if anything bubbles out air wise.

 

[m_c]

Are the cables installed correctly?

Although it uses two rams, the rams must be relying on the cables to keep them in sync, as the rams are simply connected in parallel with no valving to control which one moves first.

 

[Onoff]

Are the cables installed correctly?

Although it uses two rams, the rams must be relying on the cables to keep them in sync, as the rams are simply connected in parallel with no valving to control which one moves first.

Synchronisation is key to these. I'd revisit that to check it's set up properly. As above you have to raise the arms a set distance and lock in place. Then fit and tension the ropes. Ensure the ropes are at the same tension - pull the rope and measure deflection. As you operate the lift you should hear the safety catches "clacking" in unison and with the same intensity / loudness.

 

[Paulbarrett]

Yes went through that process 3 times from a fresh. Tape measure the lot.

I will be having a final bash today to see if I can resolve myself as I want to get using the lift asap

 

[Paulbarrett]

Solved,
I went at it resetting the cables again, up and down up and down. Still not quite right.

Whipped off the lazy rams union a touch and got some air bubbling out then a constant stream. Topped up the tank with what oil I have left and it seems to have down the trick.

Manta now getting some work done to get it out the workshop and on the road ready for the next one in

 

[Turbo]

Solved,
I went at it resetting the cables again, up and down up and down. Still not quite right.

Whipped off the lazy rams union a touch and got some air bubbling out then a constant stream. Topped up the tank with what oil I have left and it seems to have down the trick.

Manta now getting some work done to get it out the workshop and on the road ready for the next one in

Interesting reg number!

 

[Paulbarrett]

Haha, can you guess it’s name