Operation & Maintenance Instruction
August, 2003
Page 7 of 24
4225-50, S.6
Figure 8 - Service Piston Assembly Fixture
Figure 6 - Hand Tool for Diaphragm Installation
Figure 7 - Mandrel for Installing O-rings
Piston or Spool Valve
O-rings
Mandrel
Air Hole
Graduating Valve Spring
Driver
Roll Pin
Section A-A
Slide Valve Spring
Slide Valve
Graduating Valve
Piston Stem
Slide Valve Spring
Fixture Back Plate
Jaws of Bench Vise
Fixture Body
Roll Pin in Place
A
Graduating Valve
Fixture Back Plate
A
1
/
4
R
3
/
4
3
/
4
3
/
32
Approx. 8
1
Material: Steel
Break Corners and Remove Burrs
