diagonal register always maxed out on 3rd unit

running a cd74 2005 .are thrid unit is almost always maxed out in its diagonal register. I am wondering if i lossen the bolts on the front clamp can i make a adjustment there to fix the problem.we have checked the plates and its not there so has to be at press.

 

yep just zero everything and then just loosen the top clamp bolts move it to what you need then check it to another unit it might take you a few go's tho

 

As already noted you need to make sure everything is zero and I usually will use feeler guages stacked up to 4mm as a starting point. Make sure the 4mm feeler fits tightly between the pin on the plate clamp and the plate cylinder. I will use a small screwdriver and wedge it between a screw to force the clamp up against the feeler to hold it tightly while I tighten the bolts. Once you have both sides set to 4mm test and you will be able to quickly see which side needs to move up or down. I will then move in .10 steps until I get it spot on. It also is best to use a tight grid when doing this.

 

running a sm102 year 1990 .are thrid unit is almost always maxed out in its diagonal register. I need to know if diagonal motor xm6 adjustment to its zero or not ?how to fix the problem.?we have checked the plates and its good and the operator told us the problem from diagonal

 

Dear jmt,
In the photos, assume the blue color is printed in a good unit. The black color is printed in the bad unit (3rd unit in your case).
If you have case 1, you must check your diagonal motor.
In case 2, you have to adjust your plate clamping, as described by Mr.exheidmech earlier.
Hope this will help.

 

Thanks for your reply
We have case 1 so the diagonal motor need to be changed by new one and adjusted
So I need practical way to adjust diagonal

 

Put the diagonal register Zero, at your 3rd unit, then move the motor out, and check the pinhole 6mm to the side frame OS, if its not aligned move the spindle manually until the 6mm holes are met.
Now insert the motor without moving it.
Good luck.

 

Thanks for your reply
Could you send picture for pinhole also spindle to know how to adjust

 

In some machines you can find the motor attached to a bearing disc next to the plate cylinder OS.
Set the diagonal register to Zero.
Move the motor or the motor gear.
Check the distance between the bearing edge to the pin to 4mm, adjust by turning the other gear until you get 4mm.
Insert the motor without turning the gears.
Now you are at Zero position.
Sorry for bad drawing.
Good luck.

 

Thanks for your reply
I appreciate your help
I will try