Pm 52 impression not coming

Dear all
I have a pm 52 we got a impression problem
With the second unit when we put the impression
On and run the machines the impressions don’t
Come on the paper in the second unit
Our mechanic is telling us that the gap is too close
Between the blanket cylinder n plate cylinder
In impression off mode the paper supposed to
Pass through the two cylinders but it does not
He says the two cylinder touching too much
He’s gong to have to set the gap between the two
Cylinders by opening the gears from the side
Our operator says that he can still increase the underlay packing and impression will come
Any suggestions pls thank you

 

Put a 0.4 mm calibrated sheet of a blue color as a covering, a blanket of 1.95 mm thickness after the first use the thickness of the blanket becomes 1.90 mm which gives 2.3 mm as cylinder hollow (2 ,3= 1.9+04 )
Also set the print pressure to 0.10. now with these settings you are working within the standards after if the impression is still weak you must adjust the pressure between the cylinders.
Good luck