This manual is designed to provide information useful in servicing the Hydro-Gear 6cc (0.37 cu in.) PC Series, the 10 cc (0.61 cu in.) PG Series, the 12 cc (0.73 cu in.) PJ Series, the 16 cc (0.98 cu in.) PR Series, and the 21 cc (1.28 cu in.) PW Series pumps.
This manual provides detailed service and repair procedures for Hydro-Gear’s P Series hydrostatic pumps, including PC, PG, PJ, PR, and PW/PY models. It covers external features, hydraulic schematics, technical specifications, and maintenance procedures. The guide also includes a glossary of industry terms for clarity. Repair procedures are illustrated and described, with warnings for safety and operational best practices.
The pumps are axial piston designs with variable displacement, used in lawn and garden equipment. Each model has specific displacement, pressure, and performance ratings. The manual includes fluid change, filter maintenance, and troubleshooting steps. Some models feature auxiliary pumps and bypass valves for specific applications.
| Displacement | 6cc (0.37 cu in.) PC Series |
|---|---|
| Weight of Unit | 7 lbs [3.2 kg] |
| Inlet Filtration Requirement | Nominal micron 25 |
The manual covers Hydro-Gear PC, PG, PJ, PR, and PW/PY P Series pumps.
The bypass valve allows oil to be routed from one side of the pump/motor circuit to the other, permitting machine movement at low speeds without engine operation.