![background image](http://html1.mh-extra.com/html/flow/mach-300/mach-300_manual_2307753101.webp)
Part 02
1. Apply a minimum of 5.5 bar (80 psi) shop air to the actuator to open the valve.
2. Put the assembly in a soft-jaw vise, and then remove the gland nut from the valve body. This
will separate the on/off valve assembly from the cutting head and expose the poppet seat.
3. An O-ring helps hold the poppet seat in place. Remove the O-ring, and the poppet seat should
come out of the valve body. If it doesn't, use the seal installation tool to help loosen the seat.
O-ring · Poppet seat
4. Remove the valve body from the actuator, and then set the actuator aside.
5. Place the seal installation tool against the tip of the poppet, and then push the poppet out of
the valve body. The seal, O-ring, and backup ring should also come out with the poppet. If they
don't, push these parts out of the valve body in the same direction as you pushed the poppet.
Poppet · Seal · O-ring · Backup ring
6. Thoroughly clean the valve body, gland nut, and collar with solvent and then dry the parts with
shop air.
Part 03
1. Thread the seal guide tool into the valve body.
2. Apply a thin, even layer of WHITE FOOD GRADE GREASE to the poppet, O-ring, seal, and
backup ring and then assemble the parts on the seal installation tool as follows:
a. Install the backup ring onto the poppet.
© 2021 Flow International Corp.
Retrieved from Flow KB on April 15, 2021 PST
On/off valve repair
Summary of Contents for MACH 300
Page 1: ...MACH 300 SYSTEM MANUAL Includes Ancillary Options M 810 REV C en APRIL 2021...
Page 28: ...View 2 2021 Flow International Corp Retrieved from Flow KB on April 12 2021 PST Safety...
Page 29: ...View 3 2021 Flow International Corp Retrieved from Flow KB on April 12 2021 PST Safety...
Page 107: ...ANCILLARY OPTIONS For Mach 300...