pm 74 sheet arrival timing

wondering if anyone can tell me how to check the sheet arrival timing on a pm 74 2c.we are haveing a prob with always showing crooked sheet .i believe the prob is the sheet arrival sensors but want to check the timing as well.

 

Sheet arrival for a PM is 250 - 252 degrees. You may also want to check to make sure your front allignment eyes are square. Easiest way to do this is to move headstops to 8mm gripper bite and put a sheet in the headstops. Tape the sheet to the feed board and move the headtops away from the sheet slowly. Both lights should turn off exactly at the same time when the headstops have moved forward between 9.1mm to 9.3mm.

 

ty for the timing degree .it was a bad sensor after all but the timing is out as well .is it much different than setting the timing on a sm 52?

 

well day two and back with same problem .installed new sensors press work for about 2000 sheets and same problem came back its like something is hurting the sensors.

 

Who is installing the sensors? Are you sure the sensors are being adjusted correclty. Do the test I said in my first post on here and let me know where the lights shut off and how far apart the two are from each other.

 

i installed the sensors and there even .checked with your method .its now looking like its are sheet arrival time its not consistent.looks like we have a bad clutch .

 

If the sheets are coming down crooked, or the eyes think the sheets are coming down crooked its probably not the clutch. Check your forwarding wheels, make sure they are in good shape and set correclty.

 

Dear sir,
still you have mentioned problem, if so, write me
yasin@orange.jo