GTA
Airguns by Make and Model => Hatsan Airguns => Topic started by: Mike 4888blues on April 28, 2012, 10:28:53 PM
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Once you been thru the ordeal of trying to undo the stocks bolt and set screw the receivers pivot bolt and set screw is waiting for you, they are with out a doubt a PITA, until you found the secret to out smart the tough factory wrenched on little buggers .
***Take note/ I have the barrel open when removing the pivot bolt,I feel it helps take any strain off the pivot bolt, every bit of help will count, this particular rifle was the hardest I come across so far to dissemble
Here's what I did if you are interested.
'' But first let me say, you need to be patient, and think things thru, as much as you need to be fairly mechanical minded and good with tools
These screws are tight'' and they need penetrating oil'' and they need to be shocked very very hard with either a small ball peen hammer or a impact driver but hard is the key!
Out side stock bolt, has a small phillips screw which is a retaining screw that keeps the nut under it from loosening up and falling off. You must find the good craftsman screw driver that fits it all the way into the bottom as theses screws are not made to U.S. specks
Insert your screw driver into the small phillips screw, smack the driver with your small ball peen hammer ''hard at least 4 x dont be a wimp now smack it!
it should should unscrew now, repeat the process if it did not.
Next the main stock bolt and nut
Spray the penetrating oil on the nut, usually your big flat driver will not be able to unscrew that nut, because for one it is some what in bedded in the stock leave it there!// Turn the stock over get a small crescent adjustable get a good fit on the strap bolt as close to the stock as possible,'' slowly now'' put pressure on a little at a time, until it begins to unscrew, dont be in a hurry, the nut on the other side will stay and not turn on you, because it is in there very deep and tight!
After you manage to get them off, remove your trigger guard you will not have a problem there then remove the stock.
Be careful not loose those trigger pins, they will fall out, tape them with masking tape, then you can concentrate more on what your doing
Next Receivers 'set screw' and 'pivot Bolt!'
Now here's where you run into trouble because they are in very very tight and the large pivot bolts flat slot is big and not machined very well.
Spray your penetrating oil on both sides of the big barrels pivot bolt, and small set screw.
''Go and get your self a small chisel grind the point down so it is flat, you want to make a thick flat head screw driver for your big flat head bolt that fits good, not loose and sloppy.
Remove your 'small philips locking screw', next to the big pivot bolt, if it does not come out normally then shock it like you did on the stock screw.
spray your pivot bolt on both side's again, insert your solid home made driver tool you made, and smack that bolt HARD'', then again, then again, then one more time, then again ( getting the picture here)
now if you did it right you will be able to hold your driver down on the bolt firmly while slowly loosening it with your adjustable crescent wrench, while keeping the receiver from sliding around. again watch to see what your trigger screws are doing you may need to adjust them back in if they started to slide out, if you did not tape them.
The last picture was from a hatsan 95 model I tossed it in there so you can see the ball peen hammer smacking the driver for shock
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Would be nice if they used Allen head type screws. Was there any type of a thread locking compound used on the pivot screw?
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Would be nice if they used Allen head type screws. Was there any type of a thread locking compound used on the pivot screw?
Hi Larry
no thread compound they just must air drive them home during assembly that's why the slots dont look so clean, on the large pivot bolt, I sent you part #1 and part #2 to your email with pics.
more to come maybe tomorow
Mike
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Nice job, Mike !
Dave
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Nice job, Mike !
Dave
Thanks Dave.
the Moller red rams were delivered back to Moller Co Saturday, So I am hoping to get the yellow back this coming week. still waiting for them to deduct for the pressure release tool I order, it has not been processed for shipping yet, hopefully they will both be here this coming week
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Nice job, Mike !
Dave
Thanks Dave.
the Moller red rams were delivered back to Moller Co Saturday, So I am hoping to get the yellow back this coming week. still waiting for them to deduct for the pressure release tool I order, it has not been processed for shipping yet, hopefully they will both be here this coming week
I am looking forward to seeing the "numbers" from the 180 bar "Yellow" . . .
Dave
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Excellent post Mike, get her done !!
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Great job! In the you need to PDF this thing!!! I agree on the OPENING. Worst nightmare of all guns in the First adventure. The WFH is a true Hatson. Just another make an year model. I see some of the pre incorporated In the different guns.
I have admit to an Error on the .22 fps in a previous post!
Fps recorded in previous post was high 8's. Gun now chrony's @ as much as 950 plus. Spring over factory Nitro = can't beat spring. You just have to Harness the gun!!
Smother gun with ram. Kindy lit a vortek or JM! But your losing WoLF POWER ! Hey, slowing you roll is great as long as you can keep the dead On accurate shot. Speed is not all of it. Sure was a difference.
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Great job! In the you need to PDF this thing!!! I agree on the OPENING. Worst nightmare of all guns in the First adventure. The WFH is a true Hatson. Just another make an year model. I see some of the pre incorporated In the different guns.
I have admit to an Error on the .22 fps in a previous post!
Fps recorded in previous post was high 8's. Gun now chrony's @ as much as 950 plus. Spring over factory Nitro = can't beat spring. You just have to Harness the gun!!
Smother gun with ram. Kindy lit a vortek or JM! But your losing WoLF POWER ! Hey, slowing you roll is great as long as you can keep the dead On accurate shot. Speed is not all of it. Sure was a difference.
Fang,
I am waiting to see the Moeller "Yellow" gas ram numbers . . . MUWAHAHAHAHA !
Dave
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Excellent post Mike, get her done !!
Thanks brent hope it helps some one one more to toss up then it is completed post #4 next
t t ya la Mike