For this repair you will need:
A hook
A pick
A ½ inch socket
The GS40GI Regulator Repair Kit for the Hyrpro D30 Pump includes of the following:
1 Relief Valve Poppet Retainer
1 Tension Spring Guide
1 Tension Spring
1 Relief Valve Seat
1 Gasket Seal O-ring
1 Spring Holder
Using a ½ inch socket, loosen the 2 bolts that hold the regulator housing. Remove the regulator housing. Push out the valve stem with your fingers releasing the 3 pieces. Using a pick, remove the popit. Remove the revealed O-ring and plastic rubber seat using a hook. Remove the metal seat. Replace the popit. You may need to use a pick to push in around the edges. Replace the plastic seat with the flat side going in first. The seat should be flush to the metal inside. Replace the O-ring, install the chrome piece and spring.
There are 2 parts to the copper side, the larger side should be installed facing the top of the regulator. Replace the spring. Replace the metal seat. Replace the regulator. Tighten the bolts using a ½ inch socket.