Vandercook 215 gripper pedal chain slack


We have a Vandercook 215 in our shop that has been going through maintenance and now we have arrived on the gripper pedal chain slack. We have started to notice the dead pedal with about three links worth of slack in the chain and the pedal is about 1-2 inches off the ground before pressing it to raise the grippers.

I was wondering what the best way is to adjust the chain to take out the slack and get the pedal to the correct height and get that pedal feel back to normal? In Paul’s book, it goes over looking at the yoke inside the foot casting without lifting the bed for further investigation.  I was wondering if there is some adjustment at the yoke for chain tension and also with my bike brain is it possible to just remove a few links with a chain breaker?

Anyways I am open to any ideas about this fix as we have a lot of heavy use coming in a few months!


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Paul Moxon, Moderator
2 years ago

No. That’s the oil hole. The taper pin is on the other side of the pedal bar. It’s apparently less obvious on your press. And just to make things fun, the small end of the pin is on the bottom.
On a couple of occasions, I found that broken taper pins allow the pedal to be freely lifted.

Paul Moxon, Moderator
2 years ago

No. These pins are on the pedal linkage near the floor. See the attached photos, the lower one shows the arm inside the leg accessible under the cabinet.

Paul Moxon, Moderator
2 years ago

Have you checked that the taper pins for the pedal shaft (MR-173) are not sheared?
Do this before removing any links in the chain.

See this photo from a comment on a previous post showing the innards of the pedal linkage.:comment image

The yoke I was referencing is for the Universals and SP series, which are connected to rods and springs.

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