Morini CM 162MI trigger problem

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cgcg
Posts: 1
Joined: Mon Apr 06, 2015 6:41 pm

Morini CM 162MI trigger problem

Post by cgcg »

I have a morini cm 162MI, since last week it started to giving me a problem. I pull the level up and then back to normal position and when i pull the trigger to shoot the pellet it's doing the dry fire click. Please helppppppp.
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SamEEE
Posts: 505
Joined: Mon Aug 12, 2013 7:48 am
Location: Aotearoa/NZ

Re: Morini CM 162MI trigger problem

Post by SamEEE »

Sear engagement issue it sounds like. More specifically insufficient overlap.

Here is how to adjust it yourself if you have a bit of technical inclination...

NB: Usually the Sear is set at the factory and doesn't need adjusting.

Symptoms of incorrect sear adjustment.
Too much sear adjustment: Trigger feels 'creepy'.
Too little sear adjustment - trigger does not engage, or trips as you cock the air pistol (as in this case).

Tools required:
Standard 162 Tool Box worth of Allen Keys
1.27mm Allen Key

Fig.1: One Morini 162MI - Long Barrel, Long Sight Radius. Beautiful grain in the grip. Also: not working.
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Fig.2: Grip removed - about to remove the trigger unit forward bolt - biggest and baddest Allen key in the set used.
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Fig.3: Bolt removed.
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Fig.4: Half cock the pistol will reveal the pin to be removed to free the trigger unit.
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Fig.5: An appropriately sized punch and mallet so as to not damage the finish.
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Fig.6: Trigger unit removed.
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Fig.7: Grub screw in the top of the trigger unit being adjusted with 1.27mm Allen Key.
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Brief instructions:
1) Turn the Allen Key CCW until the sear catches. You can cock the unit by pulling the cocking arm down. If it stays down you're golden.
2) Turn the Allen Key CW until the sear drops.
3) Turn the key back ~ 1/16 of a turn CCW from the sear disengagement point.
4) Test to ensure reliability of sear engagement.

Sear Adjustment: Clockwise - less overlap. CCW - more overlap.
I also held by thumb over the hammer pin so as to cushion it as the sear dropped. Unsure if necessary, but I felt better about not damaging the unit.

Fig.8: Assembly is the opposite of disassembly. Do not over-torque bolt; snug will do.
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David Levene
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Joined: Mon Mar 01, 2004 12:49 pm
Location: Ruislip, UK

Re: Morini CM 162MI trigger problem

Post by David Levene »

SamEEE wrote: Fig.5: An appropriately sized punch and mallet so as to not damage the finish.
;-)
Rover
Posts: 7054
Joined: Sat Nov 15, 2008 4:20 pm
Location: Idaho panhandle

Re: Morini CM 162MI trigger problem

Post by Rover »

I always appreciate fine tools wielded by a skilled craftsman. My kinda guy!
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scausi
Posts: 191
Joined: Mon Sep 12, 2011 12:31 pm
Location: Australia

Re: Morini CM 162MI trigger problem

Post by scausi »

I think before you go down the road of stripping your pistol down to the bones as per Samee.

Assuming you have not been making adjustments to your trigger prior to the malfunction, give your pistol a good clean it could be as simple as a bit dirt build up in the mech. blow out with air
Sears don't just give up or move certainly, not in an air pistol (beware of back yard mechanics ) jack of all trades : master of none
Cheers Scausi
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SamEEE
Posts: 505
Joined: Mon Aug 12, 2013 7:48 am
Location: Aotearoa/NZ

Re: Morini CM 162MI trigger problem

Post by SamEEE »

scausi wrote:Sears don't just give up or move certainly, not in an air pistol (beware of back yard mechanics ) jack of all trades : master of none

Moderately appropriate YouTube video.
http://youtu.be/uw6qPQOIPRk

Also the pistol I fixed was 2 months old and exhibited the same symptoms as OP described.
Rover wrote:I always appreciate fine tools wielded by a skilled craftsman. My kinda guy!
Farm upbringing; although sometimes it is a double edged sword!
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