If you've ever installed a trigger, made a trigger spring adjustment or had an occasion to separate the trigger frame from the solenoid housing, you probably know what a pain it is to take these two assemblies apart if you have a 2003 or more recent Impulse. I'm going to show you an easy way to make that involved task simple next time the occasion arises.

The Involved Process

If you've ever had to perform the aforementioned task(s), I'm sure that you don't want to take the time to rip everything apart including removing the board again just to remove a simple screw to separate the 2 assemblies.

There are 2 screws that hold the trigger frame to the solenoid housing on the Impulse. Removing the first one that is in the slotted area of the solenoid housing involves simply removing the screw with a philips head screwdriver. Removing the second screw on the other hand is quite a project. The only way to remove this second screw is to remove the plastic screws holding the mother board in then remove the board. The on/off button and the dwell buttons need to be removed as well.

If you own an early 2003 or previous Impulse there is only 1 screw in the slotted area of the noid housing holding these 2 assemblies together but it's still a pain. You'll need to fumble trying to align the 2 assemblies to get the holes that house the screws that hold the trigger and noid housing assemblies to the body. Once you do get them aligned perfectly, chances are that they will again misalign once you torque the screw down good. Using 1 screw is still less aggravating than using 2 though.

Some people choose to just leave out both screws that hold the trigger frame to the noid housing together and rely on the 2 screws that hold the trigger frame and noid housing to the body to hold everything together.

The Resolve

All a bit confusing you say? It shouldn't be if you've ever had to take these 2 assemblies apart before but there's a simple resolve to make this task a much more simple process:

• Find a slightly longer flat head machine screw of the same thread size as the one that holds the trigger frame and the noid housing together. Either find one at your house in that junk drawer of your work bench or simply take the trigger frame to your local hardware store and find one that fits.
• Put a dab of blue Loctite on the end of the screw to keep it in place and turn it into the front threaded hole of the trigger frame assembly. Look at the photograph above if you're confused about the location.
• Snip the excess of the screw off with a pair of wire cutters or similar and leave it protruding from the top surface of the trigger frame about 1/16" - 1/8". Just make sure it's not long enough to touch the bottom of the mother board.
• File the end of the screw to rid it of any sharp edges.

You now have a locator in the front of the trigger frame rather than having to use a screw. The screw that goes in the rear slotted area of the noid housing is enough to hold the 2 assemblies together well enough until you attach those assemblies to the body with the 2 stainless allen head screws.

A simple modification that will make things much easier for you when having to work on or making adjustments to your Impulse trigger frame.

Technical Information