Grizzly H7949 instruction manual Troubleshooting, Symptom Possible Cause Solution

TROUBLESHOOTING

Symptom	Possible Cause		Solution
Air leaking at trig-	1.	O-rings in trigger valve hous-	1.	O-rings must be replaced.
ger valve area.		ing are damaged.
Air leaking between	1.	Loose screws in housing.	1.	Tighten screws.
housing and hose.	2.	Damaged O-ring.	2.	Replace O-ring.
	3.	Loose air fitting.	3.	Tighten air fitting & use
				Teflon tape.
Air leaking between	1.	Damaged cap gasket.	1.	Replace gasket.
housing and cap
assembly.
Tool skips nails	1.	Air leaks.	1.	Tighten screws and fittings.
while discharging.	2.	Dirt in nose.	2.	Clean nose.
	3.	Dirt or damage prevents nails	3.	Clean magazine, inspect/
		from moving freely in maga-		repair damage; insert a
		zine.		clean strip of nails.
	4.	Inadequate air flow to tool.	4.	Check fitting, hose, com-
				pressor & air pressure.
	5.	Worn O-ring on piston or lack	5.	Replace piston O-ring.
		of lubrication.		Lubricate.
	6.	Damaged O-rings on trigger	6.	Replace trigger valve O-
		valve.		rings.
	7.	Worn bumper.	7.	Replace bumper.
Tool runs slowly	1.	Nailer is not sufficiently lubri-	1.	Lubricate nailer.
or has a loss of		cated.
power.	2.	Compressor is not supplying	2.	Repair or replace your
		at least 70 PSI of air pressure		compressor.
		to the tool.
	3.	Exhaust port in cap is blocked.	3.	Clean or replace damaged
				internal parts.
Nails frequently jam	1.	Nails are the wrong size.	1.	Use correct nails.
in the nailer nose.	2.	Nails are bent or dirty.	2.	Use undamaged, clean
				nails.
	3.	Magazine or nose screws are	3.	Tighten magazine.
		loose.
	4.	Driver or driver guide are worn	4.	Replace worn or damaged
		or damaged.		parts.
	5.	Nails are wrong angle.	5.	Use correct angle nails.
Nailer does not fire.	1.	Nail is jammed in magazine or	1.	Clear nailer magazine or
		discharge area.		discharge area.
	2.	Piston shaft is damaged.	2.	Replace piston shaft.
	3.	Air pressure too low.	3.	Check/increase air pres-
				sure.

-24- H7949/H7950/H7951 Nailer