Here is the difference between the eccentric bolts and the old bolts for the carriage and axles for the A1 machine.
Regular bolts.... in an oval shaped hole so that to raise or lower an individual wheel you had to really have 2 people and getting it right wasn't really easy.
- Eccentric bolt
- A bolt with centers of head and body on different axis so that one is off-center in relation to the other.
The eccentrics have a big 3/4" bolt in between the wheel and the carriage or axle.
From overhead, you can see how the wheel is towards the right.
And from the side, sort of.
Ideally, you want all the wheels to feel identical in how they move on the tracks. While not moving the machine, try to move each individual wheel. If one or more feels looser you can lower them a smidge.
And adjusting them:
Tools
5/32 allen wrench in the wheel
7/16" wrench closest to the machine
3/4" wrench on the eccentric.
Slightly (really just slightly) loosen the allen and the 7/16.
With the 3/4" wrench, rotate the eccentric bolt to make the wheel be a bit higher or lower.
When the wheel feels the same as the other wheels, tighten the allen and the 7/16". Sometimes you need someone else holding the 3/4 wrench so the eccentric doesn't move while you tighten the outsides of the wheel.
Clear as mud?
