WW PM-37P

Frequently Asked Questions

Q: What does rebuilt mean for the WW PM-37P hydraulic pump assembly?
A: The WW PM-37P is a hydraulic pump assembly that has been completely disassembled, cleaned, inspected, and reassembled with new seals, gaskets, and worn components replaced. The rebuilt pump meets original equipment specifications and pressure ratings for Dayton 3KR84 manual pallet jacks. Rebuilt assemblies perform equivalently to new equipment at a lower cost.

Q: Is the WW PM-37P compatible only with Dayton 3KR84 pallet jacks?
A: The WW PM-37P hydraulic pump assembly is engineered for Dayton model 3KR84 equipment exclusively. Pump displacement, rated pressure, port sizing, and mounting configuration are specific to this model. Do not use on Crown, Toyota, Raymond, Hyster, Yale, or other brand pallet jacks. Contact us to identify the correct pump assembly for your equipment brand and model.

Q: What pressure rating and pump displacement does the WW PM-37P provide?
A: The WW PM-37P is rated for 3,000 PSI maximum working pressure with a displacement of 9.2 cubic centimeters per revolution. This rating is equivalent to the original Dayton 3KR84 pump and provides load capacity up to 5,500 pounds. Operating beyond rated pressure voids the warranty and risks seal and plunger failure.

Q: What components are replaced during rebuild of the WW PM-37P?
A: During rebuild of the WW PM-37P, the following wear items are replaced: primary and secondary pump seals, pump gaskets, thrust bearing, inlet and discharge check valves, and the pressure relief valve cartridge. All metal components are inspected and honed. Only components meeting original specifications are installed. Components that pass inspection are retained if within tolerance.

Q: What warranty covers the rebuilt WW PM-37P hydraulic pump assembly?
A: The WW PM-37P includes a 12-month warranty against manufacturing defect when used in normal warehouse service. The warranty covers seal failure, pressure loss, or component malfunction. The warranty is void if the pump is opened, modified, or used on equipment other than Dayton 3KR84. For warranty service inquiries, contact our customer service team with proof of purchase and serial number.