WARNING: THIS GUIDE IS FOR EXPERIENCED TECHS ONLY. DAMAGE TO THE REGULATOR DUE TO IMPROPER SERVICE MAY VOID YOUR WARRANTY.
This is a how to guide on how to disassemble the Vanquish regulator for service. The regulator is similar to Empire Relay except with some parts modified to easier serviceability.
When should you service your regulator?
If your regulator pressure is rising up past the set point it means the main seal needs to be changed. The main seal is a small clear disc and the regulator must be completely disassembled to change it. An extra seal comes in the Vanquish parts kit. If the regulator is recharging slowly the brass piston o-rings may require lube or changing. Both of these issues will be covered below.
BEFORE SERVICING YOUR REGULATOR BE SURE ALL GAS PRESSURE HAS BEEN REMOVED. The PSI on you screen should read "LOW" and you should fire the marker with the eyes off in a safe direction to ensure all the air has been released.
What you will need:
3/32 Hex wrench (same size as rest of the Vanquish)
1/2in socket with 1/4in drive - Link to tool:1/2 in Socket
3mm Nut Driver - Link to tool: 3mm Nut Driver
CLICK HERE for PDF of Regulator Service Guide for Offline Use
Step 1: Remove regulator pin cap using 1/2in socket
Step 2: Remove regulator front cap (by hand)
Step 3: Remove regulator lever screw and the pin actuator will drop out the bottom of the regulator
Step 4: Place the 3/32 hex wrench in the hole where the pin actuator was removed from and push the pin/seal retainer towards the tank side of the regulator.
Step 5: Use the 3mm nut driver to remove the main piston. The main seal should then be allowed to fall out of the tank side of the regulator. To keep the brass piston from spinning use the 3/32 hex wrench.
At this point if your regulator pressure was rising you would change the main seal (the small clear disc) and should also inspect the o-rings on the large brass piston. Thoroughly clean the inside of the regulator with clean q-tips where the main seal sits and where the brass piston sits before reassembly. Apply Dow 33 grease (stock grease that comes with Vanquish) to the 2 o-rings on the brass piston when reassembling.
When servicing your regulator you should clean out the filter which is located under the silver plug on the side of the regulator. The plug can be removed with the 3/32 hex wrench.