3 Maintenance Procedures
102
September 26, 2013, 715004208 Rev. A
3. Unscrew the low-pressure filter holder from the primary check valve
inlet.
4. Use the 1/2-inch, open-end wrench to loosen the check valve, and then
remove the check valve assembly from the head.
5. Unpack the new check valve.
Caution:
When you remove the valve assembly, ensure the PEEK
washer, which is normally on the top face of the check valve, does
not remain in the head (see the figure after
).
Low-pressure filter holder
Primary check valve inlet
Primary check valve