These are the things you'll need for a complete overhaul of your Shocker with Evolve bolt: assorted allen wrenches (0.05", 1/8", 1/16", 5/64", 3/16", 5/32", 3/8", 1/4"), Dow/Corning 33 Shocker lube, dowel rod (3/8" works good), clensing alcohol, 1/8" socket or pliers if your solenoid uses the lock screws (pre-3900 serial numbers only).
Disassembly:
Start by removing the four parts of the firing assembly out the rear of the body. Do this by removing the bolt guide first, using a large 1/4" allen wrench.
Once you unscrew it to the point where the threads disengage, remove it by pulling straight out the back of the body. You can then insert a wooden dowel or similar tool into the bolt face to push the bolt and bolt sleeve out the back of the body.
Most of the time the fire chamber remains inside the body. This is the metal piece visible in the Shocker symbol on the side of the body. If it's still in there, then re-insert the dowel back into the face of the bolt to push it out.
Maintenance:
Start by cleaning off all the grease from the o-rings on the firing assembly's four parts. Simply take your cloth and wipe old grease from the rings. In the below diagram, the outside o-rings are colored tan, whereas the inner o-rings are colored blue.
Below is my "quick method" for applying a new coat of grease onto the o-rings. This is my method that I've come to use after servicing literary hundreds of Shocker firing assemblies since 2004...I believe it to be easiest and fastest.
Step 1. Slide the fire chamber onto the bolt, making sure it's not backwards (on the Evolve fire chamber, the two inside o-rings face rear, as in the above diagram). Now you will grease the bolt so it will apply lube to the opposing o-rings. Apply a new coat of grease all around the bolt sail o-ring, then grease the following parts of the bolt (labeled in the following diagram): space behind the bolt o-ring, space in front of the fire chamber, and space between the bolt o-ring and fire chamber. Again, use this diagram:
Step 2. Slide the bolt sleeve onto the rear of the bolt, with the flared end facing backward (use the provided diagram). Now it's time to re-grease all seven outside o-rings on the assembly before installing it in the body, as shown in the following diagram:
Step 3. Apply grease to the side o-rings of the fire chamber (ovals in all these diagrams) then push the assembly back into the Shocker body, fire chamber in front / bolt sleeve in back. Make sure you have the side o-rings aligned with the holes on the Shocker body (if you're using the base model). Now re-grease the two front o-rings on the bolt guide (see the following diagram) and push it into the body. Once it's in, screw it down using your 1/4" allen wrench.
The firing assembly is now cleaned and ready to use. You can now refer to the Related Links section for regulator, solenoid, or infrequent maintenance if necessary.
O-ring Diagrams:
Related Links:
· Solenoid maintenance
· Regulator maintenance
· Infrequent parts maintenance
· Firing assembly details
· Troubleshooting Leaking/Shooting