COMET PUMP LWD3020E 3GPM 2000PSI 3400RPM 5/8″ ELECTRIC MOTOR FLANGE by | Jul 26, 2026Hardened stainless steel piston guides. Maximum Pump Speed: 3400 RPM. Lubrication: fill crankcase with SAE 20W/30 oil per pump specifications.Change oil after initial 50 hour break in period, then in 500 hour intervals thereafter.