Hi,
The Pfaff 145 come with three pressurefoot-lifts:
H1 and H2 machines can get 7mm under their foot,
H3 machines will do 11 mm and
H4 machines do 14 mm.
Needle length and needle system changes accordingly from 134 via 134-35 to 190.
Then there is the A to D classification:
A is for light materials,
B for medium,
C for medium heavy and
D for heavy stuff.
L says it's set up for leather
N designates 6 mm stitch length (4 stitches per inch).
Not sure about the P ;-)
So, your machine should be able to do it with ease. I have a Pfaff 145 H2-B with needlesystem 134. It has a pressurefoot lift of 10 mm, 5 mm stitch length and will do two thicknesses of 4mm belt leather with buttery ease even without a leather needle.
HTH
Greets
Ralf C.