Nilfisk E 160.1 High pressure cleaner, pump disassembled

Hello guys, I have run out of a Nilfisk E 160.1 high pressure cleaner 150 bar, warranty, no longer built up any pressure, have pump disassembled, and see there !, all the spring parts destroyed. Now I have the problem that I can not find the springs and the clamp plates or spring holders, on the internet you get only the complete pump for 35 – 50 €, only I would like to keep the original pump, and only the springs swap. Has someone experience with it, or ideas, and who knows whether the replacement pumps qua Litatively as good as the originals are. I am grateful for every answer