Quadchip shearbars.

[Ty Korrigan]

Hi,

I'm just overhauling the Quadchip at 750 ish hours/3 years this month.

Whilst replacing a roller drive motor I notice a distinct yet subtle rounding of the 2 shearbars.

 

Is it worth turning these?

Or is the effect minimum for the effort required?

 

Cheers

 

Ty

[Gray git]

Made a hell of a difference when I replaced mine at 368hrs so definitely worth the effort.

[Ty Korrigan]

Did you replace or turn them and did you do it yourself?

Cheers

Ty

[Gray git]

Had to replace them as 1 broke and they got done at same time as bairings replaced by local dealer so sorry I can't help with telling how much of a pig they are to do but can definitely say they improved performance dramatically.

Really wish I'd been able to afford to keep it as well as getting the new machine as was such a good chipper.

[Mick Dempsey]

Does it chip as well as it used to? As someone who stands at the hopper a lot you should know, ime a slightly rounded anvil doesn't make THAT much difference. But if you're there and it's apart it's worth doing. But I'm not sure at what stage of dismantling the front end you're at.

[Ian C]

Anvils/shear bars are one half of the cutting system,if one side of the system is dull performance will drop.

[shillo]

it said in the instruction manual for the schliesing 200mx that the shear bar should be turned or replaced when the rounded bit was 2mm or more if i recall. i managed to reweld and grind back to a square edge reasonably successfully.

[Ty Korrigan]

Wear such as this is so slow that noticing it goes...un-noticed.

Not as if I just woke up one morning and thought "merde alors mon broyeur marche tres mal"

The bars go from a nice sharp edge to a very slight smooth one.

So the drop off in performance is such a slow process as to be very hard to notice.

No dings, no chunks missing, just a small detail that may be worth acting upon.

I can see the bolts but access is as ever tight so I will need to become a contortionist for a few hours (may even be easier with a mudguard off oddly enough)

Even looking forward to acomplishing the task!

Thanks for all the advice guys.

Ty

Edited August 1, 2015 by Ty Korrigan

[Gray git]

The drop off is so slow it go's unnoticed but the improvement is instantly recognizable belive me, have fun.

[kimtree]

definately worth doing. Even on the bigger chippers if your anvil/bedknife is not sharp you end up with more sticks than chips in the mulch when chipping small stuff

 

On bigger logs it doesnt make much difference