There are a couple reasons that can cause the 2V-700 to not function as it did when it was new. The first and most common is damage to the o-rings caused by exceeding the air input pressure above the recommended 90 PSI. A pressure regulator is required on the input to maintain a proper input pressure (90 PSI). At higher pressures the o-rings expand and are damaged by the internal porting in the manifold and a loss of the ability to pull a vacuum. We provide a free o-ring kit along with instructions to get your 2V-700 operating properly. It takes about 5 minutes to do the repair.

The other causes are air leak related. There may be a hole in the service hose or a leaking quick disconnect fitting. There may be a loose fitting around a part on the tool itself. To check for air leak, pressurize the 2V-700 to around 25 PSI and using soapy water, spray the connections on the tool. If there is a leak you will see bubbles around the leak. Tighten as necessary or replace damaged parts.