feinwerkbau 80 prob...
 

feinwerkbau 80 problem --  

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fenderguy
(@fenderguy)
Joined: 1 year ago
Posts: 32
January 26, 2019 18:06  

can any one shed some light on this fwb80 cocking problem --  the cocking lever will not open -  I depress the spring loaded cocking release to its limit and the cocking lever still won't open - I tried putting some over the top pressure on the release , but won't open / don't want to break anything --  the arm and release tab look duplicate to my fwb65 -- has anyone run across this problem ???  would greatly appreciate some help ---  


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marflow
(@marflow)
Joined: 1 year ago
Posts: 523
January 27, 2019 01:52  

more history on the pistol, when was the last time it was fired would help

if it has been setting for an unknown amount of time, the breech seal could have stuck to the breech cone area and this is a wild guess at that

if the seal is stick some hair drier heat might break it loose when it soften up

so tell us more about the history is the pistol

Mike


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fenderguy
(@fenderguy)
Joined: 1 year ago
Posts: 32
January 27, 2019 03:40  

looking at it closely with a 10x magnifier , I see the spring loaded release lever / tab is not clearing the cocking arm - it needs another 3 or 4 hundredths of inch [ guesstimate ] for the c/arm to clear --- the spring loaded release feels duplicate to my 2 other fwb65 / does not look or feel restricted or bent / damaged -- the 80 is in very nice condition / no apparent physical damage ---- is there anything that would restrict the motion of the s/loaded  cocking release tab ?  it needs just a little more travel --- 


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218bee
(@218bee)
Joined: 1 year ago
Posts: 55
January 27, 2019 11:21  

Check the condition/orientation of the machine screw located at the pivot point of the cocking lever and frame boss.  Sometimes these work loose and cause havoc.  Good luck..


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marflow
(@marflow)
Joined: 1 year ago
Posts: 523
January 27, 2019 14:04  

yes to the loose cocking lever screw, just take the grip off, at the same time you can see the arm clip screw and see what see going on there, maybe there is a piece of crud keeping the spring from compressing all the way

you should be able to fix it

here this is Feinwerkbau site you can pull up a parts diagram in PDF

https://www.feinwerkbau.de/en/Service-Download/Exploded-drawings

Mike


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fenderguy
(@fenderguy)
Joined: 1 year ago
Posts: 32
January 27, 2019 16:30  

update - have the 80 apart - pulled the cocking arm off via the c/arm pivot screw , looks and functions good / do not see any problems -  I have narrowed it down to the cocking arm release [ fwb calls it the detent pawl ] - not traveling inwards enough to clear the cocking arm slot - maybe the spring is coil binding or some foreign material is restricting the travel -- can not remove the pivot screw - will need a better quality jewelers screwdriver - that should do it - BTW - while I have it apart , what is the best lube for the sliding mechanism ???   THANK ALL FOR YOUR REPLIES - MOST APPRECIATED !!!


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marflow
(@marflow)
Joined: 1 year ago
Posts: 523
January 27, 2019 19:39  

none on the lube leave alone     the only thing is the spring now and too  clean and test

if you don't have some gun only screwdrivers this little kit is a must

https://www.amazon.com/Pachmayr-03047-31Piece-Tool-Kit-x/dp/B002GJNECY

 

shop around for price I rate it as a great set for the money

Mike


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218bee
(@218bee)
Joined: 1 year ago
Posts: 55
January 27, 2019 20:23  

Good luck with the fix..  As for the lube, 2 years ago I switched to Mobil1 synthetic motor oil on all my guns, (air & powder).   After trying many of the latest & greatest lubes, I found I like Mobil1 best. Very slick,  no odor and cleanup seems easier on my dirty 22 rimfire pistols. One $3 quart will last you forever.


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fenderguy
(@fenderguy)
Joined: 1 year ago
Posts: 32
January 28, 2019 09:22  

is that mobil 1 oil ? as in quart ? I see 14 different mobil 1 oil products  in quart containers on the mobil 1 website --  what weight / specs are you using ?  and where did you find mobil 1 for $3 per quart ?   usually about $6 -- 


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218bee
(@218bee)
Joined: 1 year ago
Posts: 55
January 28, 2019 13:04  

Yes...Brain fart, they are $6-8 at Walmart.  I just use the regular 10w-30 stuff.


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marflow
(@marflow)
Joined: 1 year ago
Posts: 523
January 28, 2019 14:03  

but FWB 65-80-90 are not like other guns, and you don't put lube on after they are assembled

outside part that's fine, internal parts no, they use metal piston rings and a very little grease at that

Mike


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ekmeister
(@ekmeister)
Member of Trade
Joined: 1 year ago
Posts: 352
January 28, 2019 15:23  
Posted by: marflow

none on the lube leave alone     the only thing is the spring now and too  clean and test

if you don't have some gun only screwdrivers this little kit is a must

https://www.amazon.com/Pachmayr-03047-31Piece-Tool-Kit-x/dp/B002GJNECY

Pachmayr is well known and well respected in the world of tools for working on guns, so I'm sure that set would be very-good.

I just want to add that I have and like this Stanley set, and I especially like it because it contains several sizes of Torx bits, among other things.  Torx bits are great for working with Allen headed socket screws that have started to strip, and thus can no longer be 'coaxed' to tighten or loosen with the intended Allen sized bit.  It's only a few dollars more. 

In comparing what's included, maybe owning both of them would be a good thing to do.  The Stanley set has more Torx bits, while it appears the Pachmayr set seems to have a larger selection of phillips head bits.  I see that Amazon carries other sets with even more bits, and for less, but the quality may not be as good as with these well-known brand name products.

https://www.amazon.com/Stanley-STHT0-70885-Screwdriver-35-piece-Yellow/dp/B00DY1Y22Y

 

Safe and Happy Shooting!

Ed, the Airgun TuneMeister

https://www.airguntunemeister.com/


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marflow
(@marflow)
Joined: 1 year ago
Posts: 523
January 28, 2019 17:31  

t-10, t-15, t-20 torx  7 allen  in the Pachmayr set and Wiha makes anything that is not in the set

the Pachmayr set is on the cheap side but it is better then household screw drivers, I hate to see galled screws on guns

and with the set you test hold the bit fits and then put it in the handle

that's it from me but tools are the key to doing the job right

Mike


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Prairie Farmer
(@prairie-farmer)
Joined: 1 year ago
Posts: 152
January 28, 2019 20:28  

I ended up grabbing one of these kits, needed the torque driver, but the nit bits in the kit are excellent quality also.

https://www.wihatools.com/torque-control-drivers-handles-blades/torquecontrol-tools/torquecontrol-53-piece-bit-set

🎯

Prairie Farmer

Everybody gotta die sometime Red.


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marflow
(@marflow)
Joined: 1 year ago
Posts: 523
January 29, 2019 02:14  

well that is an investment for sure but great tools are just that

Mike


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