Mchale 998 cut and hold issue

[Mark7810s]

The cut and hold on the right hand side is not cutting. The ram wont go down the last two inches to get the wrap cutting on the knife just ends up braking when the bale goes off the back.
Have tried bleading air from the ram and made no difference. Would the accumulators be at fault but from what i can work out the two are teed in together?
Any ideas on the next step?

regards
Mark

 

[Dave W]

Which way does the ram move with accumulator? In or out?
It might need the accumulator side of the ram filling with oil

 

[Speedstar]

it needs the ram bleeded it has air in it , lift it up then slacked the hyd coupling & let the air out

 

[Mark7810s]

Back at this today and swapped accumulators from another wrapper and has cured the problem straight away. I hear people mentioning recharging them but surely if the gas has leaked out the bladder is split?

 

[Dave W]

Which way does the ram move with accumulator? In or out?
It might need the accumulator side of the ram filling with oil

Try this ^

 

[Mark7810s]

The accumulator moves the ram back down all the way to cut the plastic. Having had two wrappers side by side its clear it can only be the accumulators as there is next to nothing other than gravity pulling down the rams. Swapping the accumulators pulled them down hard and fast.

 

[Speedstar]

The accumulator moves the ram back down all the way to cut the plastic. Having had two wrappers side by side its clear it can only be the accumulators as there is next to nothing other than gravity pulling down the rams. Swapping the accumulators pulled them down hard and fast.

Air in the ram , have to bleed our one 2 or 3 times a year , then it is 100%

 

[grass man]

The accumulator moves the ram back down all the way to cut the plastic. Having had two wrappers side by side its clear it can only be the accumulators as there is next to nothing other than gravity pulling down the rams. Swapping the accumulators pulled them down hard and fast.

When you changed the accumulators you bled the rams

 

[livestock 1]

Oil has wept past the central seal inside the ram. Take pipe and bung out of the other end put pipe on bung end and pressurise to reset
Don’t leave cut and hold closed overnight leave it open

 

[Mark7810s]

Think im finally getting my head around this. Will put the old accumulators back on tomorrow and report back

 

[livestock 1]

It all fits without needing any parts. Only a few minutes job