I got a B19/Crossman Phantom/Quest a few weeks ago and after shooting it for a while decided to do a tune up. It wast just a basic clean/sand/lube tune with GRT3 trigger. This was my first tune, not uber professional but got the job done.
Workspace, ghetto I know, but it works. Notice drum stick, my most useful tool. Screw Dewey rods.
[img=http://img518.imageshack.us/img518/5799/p2220087s.th.jpg]The guts.
[img=http://img6.imageshack.us/img6/6995/p2220098s.th.jpg]Lube of choice. I think I got a little bit confused and bought lithium grease for the compression chamber when I meant to buy silicone grease or just misread somewhere. I only realized this after I bought it but decided to go with it anyway. It seems to work fine. I didn't want to bother with ordering specialty lubes online, so I tried to stick with store bought lubes. I didn't use tar this time around.
[img=http://img6.imageshack.us/img6/3905/p2220097s.th.jpg]This is why you shouldn't dry fire (I did a couple of times, by accident. The pellet fell out while closing the barrel.) Its hard to see, but the cocking foot slammed up against the receiver making a receiver shaped indent in the front of it. Not good, although no real damage was done.
[img=http://img3.imageshack.us/img3/2609/p2220092s.th.jpg]Here is the ghetto spring compressor. Its made from household scrap and some pine board, the most expensive part. It works fine for decompressing, which is what I used it for. People stress about the compressed spring, but its really not that bad. It won't kill you, its NOT a car spring. Using a compressor just makes everything cleaner. I used my hand to compress the spring back and had a helper put in the screw. The force is not big, but if it puts all its energy into the spring guide block, it can smash your finger up pretty good. I think I'll use a car jack next time as the press cause the little screw press is a paint in zee @$$.
[img=http://img3.imageshack.us/img3/8923/p2220095s.th.jpg]In general, I just cleaned and degreased the whole thing. I polished up the spring ends, giving them a little bevel at the cut off part. I sanded out the spring chamber but didn't do any honing of the compression chamber. Maybe next time. Sanded and cleaned all the small parts, tophat, guide etc. The spring fits fine into the guide. The tophat is a little more loose, but I left all that alone for now. I polished the sear, installed the CDT GTR Trigger and lubed with mystery oil. I think my next project will be to take apart that trigger assy and polish everything real good, cause there is a some roughness in there.
I didn't order a new seal and I should have. The one I have is "chopped" right where the cocking slot it. I might have done that when taking it out, but I doubt it. Forgot to take a pic though. Overall it shoots a lot smoother although it has a higher pitched noise, probably from the seal and how its lubed. The torque is significantly reduced. The new trigger FINALLY feels like a decision not a chore. I'm happy with it. I know the old-timers with scoff but this rifle is good for the money. It does its job, looks cool and its a good buy for someone who just pops into a store and gets something without too much research (me, I didn't want to think too much this time.)
Now for a few things they DIDN'T tell you. First, its not entirely clear how the trigger assy/sear should go back into the receiver. You have to hold down the sear link while putting the assy back in and make sure the little extension locks underneath the receiver while the notch sticks up above. Second, getting the pin back in is a pain. Make sure you file out/enlarge the holes in the plastic end cap, cause if they don't align right, they will make your day a lot longer. I had to file them down while everything was assembled and thats probably not a good idea. I also gave my pin a little bevel where it wasn't lining up quite right and hammered it in. Everything went in well in the end.Be careful though cause your pin will most likely shear a bit of the metal which will cut you.
I also have a couple of Q's about how you guys do things. How exactly do you sand the stamped out parts and how much? I used a little stick with some sand paper, but I'm not confident it worked well. Also how did you sand the inside of the receiver? Did you sand the piston itself? Did you do the "honing" of the compression chamber? Did you do any barrel work, and how exactly do you "run patches through or push the pellet? Thanks, and cheers.
G.
PS: When I shoot some good groups, I'll post up some results.
