Kverneland Silawrap 7510 Wrapper

[Battler86]

Hi,

I've recently bought an old Kverneland / Silawrap / Underhaug trailed self-loading wrapper. I'm not 100% sure of the exact model, but I'm guessing it's a 7510. I didn't pay much for it so I don't mind putting some time and effort into getting it sorted. The rams and motor are good as the bed spins, tips and the loading arm raises / lowers. I'm going to weld on a decent drawbar and throw on a 12vdc solenoid operated valve block. But before I do this, there's one problem to overcome....

There is no knife unit on it :/ From looking at the later models the knife mounts on the rail at the side of the bed. According to the op manual, the 7510 should have this. But when looking around the machine there's no mechanism to trigger it or any sign of where one was mounted.

Got plenty of rams, pipes and steel about the yard, as well as a lathe, MIG and plasma, so I'm planning on making a cutting mechanism to be honest. Or would it be easier to retrofit one off a later model IF I can drop on one.

Has anyone any experience with these wrappers, or making a cutting mech?

Thanks

 

[Dave W]

It's 500 wrap which will soon be obsolete
Best advice cash it in for something better.
Fitting a reliable cutting unit to that will be virtually impossible

 

[Om352]

It's 500 wrap which will soon be obsolete
Best advice cash it in for something better.
Fitting a reliable cutting unit to that will be virtually impossible

That stretch unit looks weird anyway, looks like a bit of a mash up. That's a old basic machine that might never have had an aplicutter and fitting one will be tricky and really not worth it. Repairing what's on a machine will always be easier that fitting something made up by yourself. But if you're keen have a go.

 

[Wellytrack]

As above, a solution could be sought but you would be unduly keen and the simpler idea would be to have another go with something else.
Neighbours had the same model and they got around the problem by having an employee walk alongside and manually cut and tie each bale and count the wraps too.

 

[Henarar]

It looks like it never had an applicutter and you would have a job to fit one
the later models had a different table and the applicutter was driven by a crank in the shaft that runs under the table from the center of the table to the roller drive chain, so yo would need to change that or make a crank.

As above best to sell it for what you can get and buy a wrapper with an applicutter and 750 wrap

 

[Henarar]

The reason the spool valves were mounted where they are is so you can use them from both in the cab and stood by the wrapper.
In use the best way to do it was to pick up two bales one on the table and one on the arm then stop and get out and wrap the two by manually tying on the wrap and cutting it when finished then get back in the tractor and pick up another two bales, which isn't to bad if you only have a few to do.

 

[Universe]

Looking to do many bale's at a time with it?

The stretcher looks 750, and the roll holder 500?
If the cog's are geared for 750 then the holder isn't a biggy, if the stretcher is ok (two different size rollers linked together with a chain?).
A counter is simple enough, ebay "punch counter", and either just watch the total, or go proper hardcore and get one with an output, wire it to a buzzer.
Knife & holder is a pain if non of the undercarriage is there already. Breakers yard? or as above, some cheap labour .

 

[Battler86]

Only doing about 150 bales a year.

From reading the above comments I'm starting to lean towards getting something else tbh. Just seems a shame to scrap it, and I like a decent project. Can't work out the stretch unit, rollers measure 500mm, the old roll tube on it is the leftovers of a 500mm I presume. No springs present or tensioner unit which is weird. If I knew it was complete and worked I'd probably have a go at building a knife mech.

Engineering job is no problem, just having the time to do it.

Does anyone have any pictures of how the stretch unit should look?

Shame I can't easily retrofit a ram on the bed, Rotary coupling would be the only difficult part. Did see a post from a fella who used an electric ram and a makeshift runner to feed 12v through the table. Alternatively, how about mounting a ram off the bed, on the main frame?

In an ideal world, could do with a breaker. I'll have a ponder this weekend and report back.

Thanks for the input chaps

 

[Dave W]

Only doing about 150 bales a year.

From reading the above comments I'm starting to lean towards getting something else tbh. Just seems a shame to scrap it, and I like a decent project. Can't work out the stretch unit, rollers measure 500mm, the old roll tube on it is the leftovers of a 500mm I presume. No springs present or tensioner unit which is weird. If I knew it was complete and worked I'd probably have a go at building a knife mech.

Engineering job is no problem, just having the time to do it.

Does anyone have any pictures of how the stretch unit should look?

Shame I can't easily retrofit a ram on the bed, Rotary coupling would be the only difficult part. Did see a post from a fella who used an electric ram and a makeshift runner to feed 12v through the table. Alternatively, how about mounting a ram off the bed, on the main frame?

In an ideal world, could do with a breaker. I'll have a ponder this weekend and report back.

Thanks for the input chaps

Pre stretch unit is simply 2 rollers that are geared so one runs slower than the other

 

[Wellytrack]

Your choice but can’t see it worth it, even for 150. I’d consider that obsolete.

 

[Om352]

Years ago the first wrapper we had was a volac (kverneland) mounted with no lift arm so loaded with a loader. No counter either so the advice was to put on the first layer of wrap and then stick a wisp of grass in the wrap at that point and wrap away until it was eventually covered. No counting and it worked.

 

[nxy]

Only doing about 150 bales a year.

From reading the above comments I'm starting to lean towards getting something else tbh. Just seems a shame to scrap it, and I like a decent project. Can't work out the stretch unit, rollers measure 500mm, the old roll tube on it is the leftovers of a 500mm I presume. No springs present or tensioner unit which is weird. If I knew it was complete and worked I'd probably have a go at building a knife mech.

Engineering job is no problem, just having the time to do it.

Does anyone have any pictures of how the stretch unit should look?

Shame I can't easily retrofit a ram on the bed, Rotary coupling would be the only difficult part. Did see a post from a fella who used an electric ram and a makeshift runner to feed 12v through the table. Alternatively, how about mounting a ram off the bed, on the main frame?

In an ideal world, could do with a breaker. I'll have a ponder this weekend and report back.

Thanks for the input chaps

I am a bit late I know but this might help. Mine never had a knife.

 

[Battler86]

Thanks for the pics nxy. My old girl is definitely missing parts! Decided to not spend time on this and look for something else. Had contractors in this time to do it, but on the lookout for something else.

Appreciate all the comments folks.

 

[Matty6270]

Hi. Just wondering can anybody help. I have a kverneland 7558 which was 100% until this evening. I tried to wrap a badly shaped bale and it came over the side while wrapping and hit the cut and tie until. I don’t see any damage but the part that come out to catch the wrap isn’t moving.
ive took the cover off but I cant see in my head how it works. The bar with the teeth attached to the spring isn’t moving
any help appreciated

 

[Dave W]

Hi. Just wondering can anybody help. I have a kverneland 7558 which was 100% until this evening. I tried to wrap a badly shaped bale and it came over the side while wrapping and hit the cut and tie until. I don’t see any damage but the part that come out to catch the wrap isn’t moving.
ive took the cover off but I cant see in my head how it works. The bar with the teeth attached to the spring isn’t moving
any help appreciated

There’s a 1” diameter round tube/arm that comes up to the the cut unit from under the bed. That drives the mechanism for the cut. It mounts onto an eccentric shaft under the bed with a saddle clamp type thing. If nothing at all is happening then it’s likely the saddle clamp has snapped.

If that’s ok then you need to look closely at the extending arm on the cut. It only moves out about 3/4” on each Revolution but if it doesn’t click in to the next tooth then it will just move in and out without you noticing. In which case it will need adjustment

 

[Matty6270]

Thanks dave. There is a inch box iron coming from the bed off the wrapper. It is slightly bent, it Looks like that doesn’t move. How does the bar with the teeth actually move

 

[Matty6270]

Also we’re you have ment the saddle clamp under the bed. Is this attached to the round bar going to the chain sprocket. I have looked underneath and there seems to be nothing broken. Is it something you would spot straight away

 

[Wlloyd]

Hi all I got a problem with my 7510 wrapper when I finished wrapping the bale and tip it off it cuts the wrap but won’t hold the wrap for the next bale . Had a new rubber on the hold bar but still releasing wrap

 

[Matty6270]

Is there anywhere to buy wrapper belts at not crazy money

 

[Henarar]

Is there anywhere to buy wrapper belts at not crazy money

I got one from a place down Saltash. think it was called vulcanising south west. it was a fair few years ago. not sure if they are still going.