Mark Carter 0 Posted October 1, 2019 2016 Tymco 435 w/ Cat Water Pump - Pump just went to about 1/2 pressure. I say pump, but the pressure at the nozzles is 1/2 of normal. Did the normal filter check and confirmed good gravity flow into the pump. This model has the addition of a pump on/off switch by the valve bank for use with the auxiliary water wand. Is this a pump issue or is there a check valve or other choke point to check first? Share this post Link to post Share on other sites
Pacific Sweeping 4 Posted October 10, 2019 check your relief valve and see if it failed and is pumping all water back to tank Share this post Link to post Share on other sites
