Cooey 75 - Fail to Fire update jan 26

rkaine

rkaine

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Hamilton, Ontario
Update Jan 26 2006

So here is the status - Please chip in your thoughts...

Load a round, close the bolt. Pull back on the cocking handle, hear one click.
Pull the trigger, click. Round does not fire.

Pull back on cocking handle, hear TWO clicks.
Pull the trigger, BANG. Round does fire.

It seems there is something not being reset with the trigger?

The trigger is really loose, hangs and swings in fact.

Is there something to tighten up?

Ron
__________________
Cheers

Ron
---------









Hi - Picked up a Cooey 75, shoots nice, but often a misfire right now, suspect a light strike by the firing pin. I'm not too familiar with this firearm, does anyone have a diagram on takedown of the bolt/spring, so I can give it a good scrubbing and see if that improves it?

Also, if it is something like a spring, any idea on replacements?

Cheers

Ron
 
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Headspace is usually the cause of misfires on these old rifles. When the bolt is closed you should not be able to move the bolt forward at all. If there is any movement that may be the problem.

Difficult for most people to take the bolt apart. There is a screw holding the two pieces together. You can see it when you hold the two pieces apart. ... now you see your problem...
 
Thanks for advice - I don't think it is ammo - used the same in my Ruger 10/22 just prior, not one misfire. I've given the bolt a thorough bath, and have checked there is no forward play when closed - I move the whole barrel forward when I push.

I will check this weekend, however anymore thoughts would be appreciated.

Cheers

Ron
 
There is a screw holding the two pieces together. You can see it when you hold the two pieces apart.
Click to expand...
There is a "crossbolt" piece on the back half of the bolt that has to be driven out from the left to right prior to attempting to remove the "nut" that holds the striker and firing pin in the forward half of the bolt. Sometimes tricky to locate the opposite end as most were polished and over age have blended well.
 
Occasionaly, for some strange reason completely unknown to me, the rear (striker) portion of the bolt will become out of alignment with the front part (think 'bent') - and thus will 'rub' on the inside of the receiver when fired.......... thus causing a weak strike on the firing pin. Remove the bolt and check the allignment. They 'will' bend back into allignment if reasonable care is taken. Sometimes this is not all that easy to notice as the striker is merely 'slowed down' and appears to be functioning OK.

ADDITION - rarely - but it happens - the retaining screw for the striker guide will back out and not allow the striker to fully engage. Check this by removing the bolt and ensuring that there is no gap between the front/rear of the bolt. there is a special tool needed for this screw but it 'can' be adjusted back down by pulling the bolt apart and placing something about 3/4" wide between the halves to keep them apart and then using a small punch in one of the screw slots to gently turn the screw back into the bolt body....... being carefull not to damage the screw slot.

Cheers :D
 
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sunray said:
Rimfires misfire for two reasons. Dirt and ammo. Give it a good bath and try different some ammo.
Click to expand...
not ture....
my grandpa has a 22 s/l/lr in a pumpaction and it was once ran over by a car...... it is still in VG condition being over 80 years old but every now and then it miss fires for an un known reason.
talk to ya all later
Riley
 
You might think i am crazy but soak you old bolt in a light motor oil 10w30 overnight and then wash it off with de-greaser and it fires and cocks nicer.may not help the misfire but is good for old gun parts.
 
not fireing

Have/had same problem with my cooey model 82, headspace was like .050 with bullet in. When loaded I could push the bolt forward .050" maybe 1/16" When I puch the bolt forward it would then fire when trigger pulled. I noticed the bolt had been ground right by thehandle not allowing it to be too far back. I welded it and just have to grind in. Hope this helps. This is the first time I ever bought a non firing gun. This could explain why this 60 year old gun is like new condition.
Kuulnor
 
guntech said:
Difficult for most people to take the bolt apart. There is a screw holding the two pieces together. You can see it when you hold the two pieces apart. ... now you see your problem...
Click to expand...

If you wedge the front and back bolts apart with a piece of 3/8th " brass bar stock, you can tighten the co-axial screw with a set of lock picks, small bent nose pliars or even bent nose tweezers. I did this for Ron's bolt, and it removed a lot of slop and play. I don't think he's had a chance to test it yet.
 
need further advice - cooey 75

So here is the status - Please chip in your thoughts...

Load a round, close the bolt. Pull back on the cocking handle, hear one click.
Pull the trigger, click. Round does not fire.

Pull back on cocking handle, hear TWO clicks.
Pull the trigger, BANG. Round does fire.

It seems there is something not being reset with the trigger?

The trigger is really loose, hangs and swings in fact.

Is there something to tighten up?

Ron
 
rkaine said:
Update Jan 26 2006

So here is the status - Please chip in your thoughts...

Load a round, close the bolt. Pull back on the cocking handle, hear one click.
Pull the trigger, click. Round does not fire.

Pull back on cocking handle, hear TWO clicks.
Pull the trigger, BANG. Round does fire.

It seems there is something not being reset with the trigger?

The trigger is really loose, hangs and swings in fact.

Is there something to tighten up?

Ron
__________________
Cheers

Ron
---------

The first click is the safety notch which holds the striker back when closing the bolt on a cartridge. The second click is the ####.
The triggers do hang with a little spring to hold them from flopping forward. That spring may be missing if it flopps back and forth on its own weight.








Hi - Picked up a Cooey 75, shoots nice, but often a misfire right now, suspect a light strike by the firing pin. I'm not too familiar with this firearm, does anyone have a diagram on takedown of the bolt/spring, so I can give it a good scrubbing and see if that improves it?

Also, if it is something like a spring, any idea on replacements?

Cheers

Ron
Click to expand...
Clean bolt and receiver, check bolt alignment, polish bolt way, check headspace. Spring is last resort.
 
I agree, the first click is the safety notch, but you should not be able to pull the trigger. The two clicks is the full #### and should fire the cartridge when the trigger is pulled. All my COOEY's catch on that first click when the bolt is closed and the trigger can not be pulled, one more click cocks the bolt to be fired. I only get 2 clicks when pulling from the fully fired position.
 
Hi - When we pull back on the cocking handle, after closing the bolt, we only get the one click. Could it be the trigger is not going to a fully fired position?

Once we try to fire the rifle, as I indicated, the cocking handle goes forward, but I don't think the firing pin is going forward. Once we #### a second time, we do get those two clicks, and no problems.

The bolt has been cleaned, both by soaking in a bath of break free, and also in an ultrasonic cleaner.

Everything else is clean.
 
Does the cocking knob come back farther when you get the 2 clicks. If it doesn't you are not bringing it back far enough the first time. If it comes back the same distance when you get 1 click there may be something wrong with your trigger or the bottem of the bolt that the trigger engages. It is hard to solve a problem when you can't see and observe the actions discussed. Parts are available still but you have to look for them. Try the EXCHANGE OF PARTS here or GOTO www.ebay.ca "gun parts" located in "CANADA" and make it a FAVORITE and check it regularly , presently there is a bolt for a Cooey semiauto and a bolt for a bolt repeater. If you get the right area in EBAY.CA it is only CANADIANS YOU ARE DEALING WITH, so no export permits, etc.
 
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