Here at Mill Supply we have a service department for snow plow pumps. The owner of this service has designed his own test kit that anyone can use. It comes with five tools and easy to follow flow chart to make troubleshooting and maintaining your Meyer plow easier. Included in the kit are: an EZ Test Harness, this harness allows you to do magnetism checks, pressure checks and see plow movement from outside the truck. One man can now do these operations instead of two. It also includes a pressure gauge used to check pressure of pump and can be used to check crossover relief pressure; a motor brush tool to make installing brushes in E47 Bosch motors a snap; a circuit tester with allows you to check switch and harness function and battery current to plow motor and solenoid; and a dipstick funnel kit to be sure you put the correct amount of fluid in your plow.