1.What is losing pressure? How to solve that?

2.How to solve losing pressure? (repair check valve assembly)

Glass, 400,800,1500 mesh sanding sheet,wrench

3.Disassembly and installation of instensifier

The 16 big bolt on the intensifier need to be torqued at 85ft.lb

For A16 intensifier, you may need a bracket to mount it on the vise bench

https://support.avwaterjet.com/en/support/solutions/articles/13000078464-a16-intensifier-mounting-bracket-for-vise-bench

4.how to replace the O-rings for pump?

5.How to replace the needles, orings, etc for water valve