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Troubleshooting
6 309739
Troubleshooting
Problem Cause Solution
Gun fails to dispense when trigger is
actuated
Material lodged in nozzle Follow Pressure Relief Procedure,
page 5. Clear nozzle of blockage.
Material supply, hose, passages,
clogged
Check material supply settings,
hoses, etc. for proper material supply.
Verify integrity of trigger pin through
yoke. Repair or replace cartridge
assembly as necessary.
Gun fails to dispense when trigger is
engaged
Tension of trigger needs adjustment Check spring tension adjustment at
rear of gun. Spring tension should be
adjusted to allow approximately 1/32
in. of free play on trigger.
Verify integrity of trigger pin through
yoke. Repair or replace cartridge
assembly as necessary.
Needle and seat adapter loose or
worn
Check that seat adapter is tightened
firmly and flush to gun body.
Needle and seat adapter worn.
Replace components as necessary.
Seal leakage Packing adjustment nut not snug Follow Pressure Relief Procedure,
page 5. Tighten packing adjustment
nut.
Worn seals and packings Rebuild gun as necessary.
Material leaks from gun inlet swivel Worn seals Replace seals.