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Troubleshooting
NOTE: Follow Pressure Relief Procedure, page 12,
before checking or repairing the SST Switch 3D Gun.
Problem
Air leaks from SST Switch 3D Gun.
Material leaks from front of SST
Switch 3D Gun.
Material leaks from SST Switch 3D
Gun weep hole.
SST Switch 3D Gun does not shut
off.
SST Switch 3D Gun does not open
or dispense material.
3A8476A
Cause
Worn gasket.
Loose or worn air connections.
Worn O-rings.
Loose end cap screws.
Tip seal or seats are worn.
Obstruction inside SST Switch 3D
Gun.
Seals not installed correctly.
Seals are worn.
Loose air connections or air supply
turned off.
Worn rod shutoff valve-seat
interface.
Broken piston, debris in air cylinder,
or debris inside the fluid section.
Spring broken or not installed
correctly.
Loose air connections or air supply
turned off.
Broken rod, piston, or tip. Debris or
cured material inside fluid section.
Loosen the retaining set screws
located in the piston.
Troubleshooting
Solution
Replace gasket.
Tighten air connections.
Replace O-rings.
Tighten screws.
Replace seat seals.
Replace nozzle head assembly
Replace rod shutoff valve.
Remove nozzle head.
Check rotary seals and replace as
needed.
Tighten air connections and turn on
air.
Replace nozzle head and rod
shutoff valve rod shutoff valve seat.
Disassemble SST Switch 3D Gun.
Check and if necessary replace,
piston, piston rod, and O-rings.
Disassemble SST Switch 3D Gun.
Check spring and replace if
necessary.
Tighten air connections.
Disassemble SST Switch 3D Gun.
Check and if necessary replace,
piston, piston rod, and O-rings.
Confirm the piston rod is fully
inserted into the piston and tighten
set screws
15
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