TF 89

[atchman2]

Okay,

I'm pretty sure I know how to take apart a 34 or Air Hawk, but how do you take the TF 89 apart?  

It has three pins holding the trigger group and some sort of plastic cap.  I think the cap needs to come off but I don't want to ruin it.  

HELP!

[Tn.Reb]

atchman2,
I believe the TF89 is the same as the Beeman RS2,with the gun out of the stock the rearmost pin hold's the end cap in place remove it and the endcap.Then you will have to fashion a tool to reach past the trigger assem.and the other two pin's to relieve pressure on the spring to remove the other two pin's.
 After doing this the spring and piston will come right out..Hope this help's

  Eddie

[atchman2]

It does thanks!

[ezman604]

Ron, the TF89 is one of the AR1000 rifles. Check this post out for info on disassembly.

http://www.gatewaytoairguns.com/airguns/forums/thread-view.asp?tid=22937&posts=4#M192413

Dave

[atchman2]

Okay, I've got it apart and lubricated.  I'm not sure even with the instructions on how to put it back together?

[Tn.Reb]

Install the piston spring and spring guide then compress the spring.After this install the trigger group and pin's to hold it in place then install the endcap and pin.

[atchman2]

That is a lot easier said than done!  I used a modification of ezman603's method.  I got lucky holding that spring!  

The only thing I have left to do is to find another small slip ring since one fell off and to locktite the stock.  We'll see if it smooths out any.  

[atchman2]

Well I put it back together enough to try it.  It shot and it didn't blow up so I'm pretty happy.  I learned a lot!  I'll do the Titan when I get the courage!  My wife wants to kill me for spending so much time on it today.  I built a compressor, took a gun apart, and put it back together without hurting myself

[ezman604]

Good job Randy. It makes it that much sweeter when you do it yourself!!!! Glad noone was injured too. LOL

Dave

[atchman2]

Man that spring is TOUGH to compress!  What I ended up doing was to put a block of wood behind the barrel so that I can compress it a little further than normal.  I stuck a screwdriver in the coils, but probably a bit further back than your directions indicated.  I held it JUST long enough to get the trigger assembly in place!After that I used the "tool" I made to compress it again to jiggle the pins back into place.  

I bought a steel rod and bent it so that I can compress past the pins.  It doesn't work all that well, but it would have worked better if I hadn't taken the front pin out first!  The second pin had a ton of pressure on it so it was really hard to get out of the gun.  

I also took the barrel off the gun.  I couldn't get it lined back up until I realized that the cylinder was slighty askew and that cocking rod thingee wasn't all the way forward.  Once I turned it just a bit it went on with ease!  

Now I have my notes on how to do it.  I think if it was a 34 or air hawk, I could have been done very quickly.  The 89 kinda messed me up with three pins, an end cap, etc.

[ezman604]

Yeah Randy, that one is tough unless you have the adapter. And I found out from trial and error about the 3 pins. I hadn't seen a setup with 3 pins before this one. I now have a 1" wooden dowel laying on my router table for when it gets a little warmer to make that springcompression adapter. Wish one of out AG buddies that's a machinest would make a bunch of those from aluminum stock to sell us "do-it-yourselfers". Hint...hint....

My first experience was with my Walther Force 1000 and was ready for the TF89 when I tore into it. Did you change the spring or reinstall the original? If installing a new one, you should have preset it. It's difficult to install a non-preset spring and puts a big strain on your compressor.

Dave

[atchman2]

I put in the original.  It was in fine shape.  

You can see why these guns have a gritty feeling.  The cylinder thingee is rough!

[atchman2]

Got to shoot a bit today.  It is far less twangy, but I've got to adjust the trigger a bit.  If I had to have an estimate, I think it is shooting harder!  I put the scope back on it and it was shooting about 8" high! Not sure if that was supposed to happen or not?  

How can I make the trigger break a little easier?  I did lube the guts of the trigger while I had it apart.

[ezman604]

Regrettably to say, you should have done this when you had it disassembled.

You can disassemble the trigger and buff/polish all the internal contact surfaces to smooth them out. And adda light coat of moly to these surfaces. That would help a LOT.

Dave

[RCnMo]

At the bottom of the thread is the tool I made and it works flawlessly. It really didn't even need the washer welded to it either. I've since given it a delrin guide and replaced the seal with one of Maccari's and it's shooting 14.3g cpl's consistently at around 790fps. If you replace the seal like I did on mine, you will need to make a tapered button that screws down into your piston. Hard hitting rifle for the money.

http://www.gatewaytoairguns.com/airguns/forums/thread-view.asp?tid=7986&posts=5&highlight=tf%2089&highlightmode=1#M57768