Version 2 Gearbox Takedown Guide

By M4army

Just to point this out but I wont be responsible for your use of this guide, take apart your gearbox at your own risk.

Now that ive cleared that up im going to start out and say that this guide is by no means a genuine guide, sometimes problems will come up during assembly or disassembly that are not pointed out here in this guide, but I will do my best to warn you of them when I get to them.

This Guide Is Based on a CA Version 2 Gearbox TM,ICS and all other brands may vary slightly


*For Reference GB stands for Gearbox

Step 1:
Get all your supplies
The Supplies I have are as follows:
-2 Screwdrivers(flat and phillips head)
-an allen wrench kit(contains all allen wrenches I use to disassemble my gun)
-Gear Grease(Phantom Grease by Guarder)
-Pick Set By Craftsmen
-Two Containers for Keeping the Screws
-Set of small precision Screwdrivers(used for misc. tasks such as holding the spring guide down while opening GB)
that is all I had for what I was doing today but sometimes I can have extra parts(for installing upgrades that require modification)


Step 2:
Opening The GB

First take Your Phillips Head Screwdriver and start removing the screws holding in your GB, Personally I prefer to start right below the spring guide and work counter clockwise, always leaving one screw in until your ready to remove Half of the shell.


Step 3:
Sepperating the Two Halfs

Once you have all the screws out(except one) place your precision ScrewDriver into the hole for the SpringGuide like so:


Now Carefully remove the last screw and gently hold the gearbox down to prevent accidental opening before your ready.(this is one of those warnings your spring can shoot the spring guide out if not held in) once you have that screw out press the front end of the screwdriver down and you will see the front end of the spring guide start slanting down.( sorry my camera couldnt pick up a picture of the angle)

And when your ready slowly seperate the two halfs keeping that spring guide held down, when you get it opened it should look like this(sorry this ones a little blurry):


Now slowly lift and remove the spring and spring guide like so:


Step 3
Removing the Guts of your Gearbox

Once you have your gearbox opened and the spring removed you should realy have to worry about anything "Shooting" out at you. but there are three more spring to watch out for:
1. Anti Reversal Latch:
2.Tappet Plate:
3. trigger Mechanism:(I don't have a picture of it as of now)

Now You can continue to remove the Cylinder Set.
First remove the spring gently and put it into a safe place where you wont lose it, then continue to remove the whole cylinder(this is after you slipped out the piston and spring with spring guide):

Step 4
Remove the gearsOnce out you can remove your gears(make sure you don't lose any shims they are crucial for propper function of your gun):
-First, remove the Sector Gear:
-Second Remove the Bevel Gear(watch out for the anti reversal latch and Spring Put those in a safe place):
-Anti Reversal Latch and Spring:
Third remover the Spur gear, and like before watch for shims.:


Now Reassemble:

For this its just a matter of going backwards but I have Photos of Correct gear Timing:

for this you want the gears first tooth to be above the tappet plate like so


It is also very important to make sure your gearbox should look something like this before you close it:



after that its just holding everything in place(beware occasnionally the Springs for the anti reversal latch and trigger(may just be my gearbox) can come out and force you to re insert them. but once its all together I use the picks I mentioned earlier(craftsman ones) to align the gears so it all closes correctly.


now just insert the screws as you took them out:


Just for referance the larger(longer ones are at the bottom, short ones at the top), idk if this applies to TM but I heard that the screws are unique so remember where you took them out and put them back in the right hole). and now its just the simple matter of tightening the screws. don't over tighten and if they don't go in correctly make sure nothing is in the hole.


And Thats it, as for upgrades its a matter of just replaceing them with the stock one, Gears and bushings require Reshimming before you can use it.

Thanks For Reading

~M4aRmY

This post has been edited by M4aRmY: Jul 22 2007, 08:26 PM

Very informative this should be pinned. I made a request for it to be pinned.

This post has been edited by njsniper: Jul 22 2007, 08:46 PM

thanks I just made this in 45 minutes so if any one finds any errors typing etc... just tell me and ill try and fix them all,

Wow, we really need more guides like this; one for each type of gearbox out there.

I give you a pat on the back for such an awesome job.

yeah, I was going to say that.

One thing....the notch on the sector gear should be almost touching the tappet plate...not underneath it

edit:

do you mean you shouldn't have to worry? :D

This post has been edited by hydralover: Jul 22 2007, 10:00 PM

yeah thats something im going to fix but I cant edit it it keeps saying to many pictures but I posted it just fine. but yeah the tappet plate got bumbed up for some reason and its reasting above it I think I forgot to push it back first before I took the pic

This post has been edited by M4aRmY: Jul 22 2007, 10:03 PM

that's strange...ask a mod or something.

edit: it got pinned :D

edit2: I should do this for V.3....

This post has been edited by hydralover: Jul 22 2007, 10:19 PM

Sweet its pinned, but yeah im going to look through for errors then pm a mod and see if it can get fixed. that way its only one time and they wont have to wory about it.

yeah but now that it's pinned, less people will look at it...

hmm yeah thats true I guess but if people ever need to find it the search feature and people who read pinned topics will have this knowledge and can share it.

This post has been edited by M4aRmY: Jul 23 2007, 02:45 PM

Nice guide son.

Man I gotta say you are a lifesaver! Thanks for this guide! it must have taken a long time to do so thanks for taking one for the team

awsome guide I took a part a old box and put back together for the first time thanks

thank you very much

Is there anyway you could post more pics of how the anti-reversal latch and the trigger Spring goes in? Im not sure If I put mine in Correctly.

please do trigger assembly !!!

Not to be a A$$ but this was not very helpful... no photos. :-(

If you guys would use something else beside photobucket, it might last longer than 90days



Bravo 1

Quick question, My current gearbox has 8mm ball bearings, if I am going to replace them with full metal 8mm bushings, can I just swap those out and be done with it? I have heard various things about shimming after a replacement of bushings/bearings. So, after I have swapped the bearings for the bushings, is there anything else that I ABSOLUTELY HAVE TO DO in order to ensure the proper operation of my gun?

This is a wonderful Take down guide.
Nice pictures and great advice and easy instructions.

Excellent guide! I do have a question though - does the slot on the cylinder have to be on the right side? Will the gun lose compression if installed any other way?

Excellent guide! I do have a question though - does the open slot on the cylinder have to be on the side facing up when you close the gearbox? Will the gun lose compression if the cylinder is rotated another way?

This post has been edited by mondo135: Jul 15 2010, 03:51 PM

Can you please please please update the pictures so they show. I would love to know how to set the timing on my gears.

The pictures work fine for me.

Also, there is no such thing as gear timing. The way the cutoff lever works eliminates "timing" issues. When I put gears in, I just put the nub that grabs the tappet plate in the 1 o'clock position. Basically just put the first tooth of the sector gear touching the first tooth of the piston. In the end though, it really doesn't matter. You could have the tapet plate nub in the 3 o'clock position if you wanted or anywhere else, but it is just easier to put it in the 1 o'clock position. The 4th to last picture shows what I am talking about.

web browser you are using?

Mozilla Firefox

Scratch that what I said. At work and Photobucket is blocked. Do you have a picture of what your gears should look like as your stating? It would be really benefital.