Graco Inc. 12004 ユーザーズマニュアル

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.