RE267297 RE239222 Steering Pump Sauer Danfoss 100cc

Product Overview

The RE267297, RE239222, and RE42490 are hydraulic steering units (Orbitrols) designed for John Deere tractors, corresponding to the Sauer Danfoss OSPC 100 Series and Eaton 101s-100CC Series steering control units. Featuring an orbital rotary valve design, these units integrate a steering metering motor and steering control valve into a single compact assembly, precisely controlling steering cylinder flow and direction via steering wheel input for accurate, low-effort hydraulic steering. The steering unit incorporates multiple built-in valve functions — inlet safety valve, cylinder port shock valve, anti-cavitation valve, inlet check valve, and internal check valve — ensuring emergency manual steering capability in the event of steering pump failure.

Important note: Part number RE503883 has been verified as a John Deere temperature switch (Temperature Switch), not a hydraulic steering pump, and does not correspond to the steering unit functionality described in this product listing.

Manufactured to original Sauer Danfoss OSPC and Eaton 101s technical specifications with full drop-in interchangeability. RE267297 directly replaces OEM steering units on John Deere 5083E, 5093E, 5425, 5725, 6100D–6140D models. RE239222 fits 5055E, 5065E, 5075E, 5085M, 5105, 5210, and 5220 models. RE42490 fits 5105, 5205, 5220, 5320, 5425, 6403, and 6603 models. Every steering unit undergoes 100% simulated load testing at the factory, covering steering torque, metering accuracy, and built-in valve dynamics for seamless replacement in demanding agricultural environments.

Technical Specifications 

• Series: Sauer Danfoss OSPC Series / Eaton 101s Series

• Design: Orbital rotary valve hydraulic steering unit (Orbitrol), open center

• Displacement: 100 cm³/rev (RE267297/RE239222/RE42490 standard configuration)

• Available Displacement Range: 50 / 63 / 80 / 100 / 125 / 160 / 200 / 250 / 280 / 315 / 400 cm³/rev (full series range)

• Rated Flow @ 100cc: 12.5 L/min

• Maximum Working Pressure: 17.5 MPa (175 bar)

• Rated Flow Range: 5–40 L/min (full series)

• Steering Torque: 0.5–1.8 Nm (normal steering operation)

• Maximum Continuous Back Pressure: 2.5 MPa (25 bar)

• Control Type: Mechanical steering wheel input, manual hydraulic steering

• Built-In Valve Functions: Inlet safety valve, cylinder port shock valve, anti-cavitation valve, inlet check valve, internal check valve

• Relief Valve Pressure Settings: 6–17.5 MPa (selectable)

• Shock Valve Pressure Settings: 12–23.5 MPa (selectable)

• Oil Port: 3/4-16 UNF O-ring (standard)

• Port Thread Standards: DIN, ISO, SAE, or JIS available

• Weight: Approx. 5.75–7.5 kg (depending on displacement size)

• Steering Function Versions: Open Center Reaction (OR) / Open Center Non-Reaction (ON)

Model Code Interpretation:

• RE267297: John Deere OEM part number, corresponding to Sauer Danfoss OSPC 100 Series steering unit, fits 5083E, 5093E, 5425, 5725, 6100D–6140D models, OEM replacement for Danfoss original.

• RE239222: John Deere OEM part number, corresponding to Sauer Danfoss OSPC 100 Series steering unit, fits 5055E, 5065E, 5075E, 5085M, 5105, 5210, and 5220 models.

• RE42490: John Deere OEM part number, corresponding to Sauer Danfoss OSPC 100 Series steering unit, fits 5105, 5205, 5220, 5320, 5425, 6403, and 6603 models, OEM replacement for Danfoss original.

Data based on Sauer Danfoss OSPC Series technical documentation and Eaton 101s Series technical manual.

Key Technical Advantages

1. Orbital Rotary Valve Metering Motor — Precise Proportional Flow Control

The core of the OSPC/101s Series is its orbital rotary valve metering motor. Steering wheel rotation drives the rotor-stator pair of the metering motor, discharging a fixed volume of oil per revolution (100 cm³) precisely to the steering cylinder. Metering accuracy is unaffected by system pressure fluctuations, maintaining a strict proportional relationship between steering wheel angle and wheel angle. When the steering pump fails, the built-in check valve converts the metering motor into a hand-operated pump, allowing the driver to perform limited manual steering for safety.

2. Multiple Built-In Valve Protection — System Safety Redundancy

The steering unit integrates five built-in valve functions: the inlet safety valve limits maximum steering circuit pressure to protect system components; the cylinder port shock valve protects against pressure surges created by ground forces on the cylinder axle; the anti-cavitation valve prevents vacuum and cavitation conditions in the steering circuit; the inlet check valve prevents oil backflow when cylinder-side pressure exceeds inlet-side pressure, eliminating steering wheel kickback; and the internal check valve enables emergency manual steering. This multi-layer protection architecture maintains steering controllability under extreme operating conditions.

3. Low Steering Torque and Wide Control Range

Steering torque is maintained between 0.5–1.8 Nm, minimizing driver fatigue during extended operation. The wide control range combined with low-noise operation makes the steering unit suitable for applications ranging from precision row-crop guidance to high-speed road transport. The 2.5 MPa maximum continuous back pressure rating allows stable operation at elevated return pressures, accommodating long return line routing common in agricultural machinery.

4. Series Displacement Coverage and Flexible Configuration

The OSPC/101s Series covers 11 displacement sizes from 50 to 400 cm³/rev, with 100 cc being the standard configuration for John Deere tractors. Oil port connections can be specified to DIN, ISO, SAE, or JIS standards to meet different OEM interface requirements. Two steering function versions are available: Open Center Reaction (OR) provides road feedback torque to enhance driving feel, while Open Center Non-Reaction (ON) reduces road shock transmission to the steering wheel for smoother steering in specific applications.

Application Areas

• John Deere Tractor Steering Systems: 5083E, 5093E, 5055E, 5065E, 5075E, 5085M, 5105, 5200, 5210, 5220, 5320, 5425, 5603, 5625, 5725, 6403, 6603, 6100D–6140D models

• Agricultural Machinery: Tractor hydraulic steering systems, combine harvester steering control, sprayer row-crop guidance steering

• Construction Machinery: Compact loader and telehandler steering systems

• Material Handling Equipment: Forklift hydraulic steering control

• Specialty Vehicles: Municipal engineering vehicle steering systems, forestry machinery hydraulic steering

Expert Maintenance Tips

Pre-Installation Inspection: Before installing the RE267297/RE239222/RE42490 steering unit, verify hydraulic system cleanliness meets ISO 4406 18/16/13 or better. Port plugs should be removed and piping connected immediately after unboxing — environmental exposure should not exceed 15 minutes. Ensure the steering wheel spline properly engages the steering unit input shaft, and tighten to John Deere OEM torque specifications.

Steering System Bleeding: After initial installation or steering unit replacement, the steering system must be bled of air. Start the engine at idle and slowly turn the steering wheel to full lock positions left and right 3–5 times each, monitoring reservoir level and replenishing hydraulic oil as needed. Avoid holding the steering wheel at full lock for more than 10 seconds during bleeding to prevent relief valve overheating.

Relief Valve Pressure Verification: The steering unit’s built-in inlet safety valve setting should be verified against John Deere OEM specifications. Connect a pressure gauge (0–250 bar, minimum 1.6 accuracy class) to the steering unit inlet test port, turn the steering wheel to full lock to activate the relief valve, and read the pressure. Standard relief valve settings for RE267297/RE239222/RE42490 range from 6–17.5 MPa depending on machine configuration. If pressure deviates from specification, inspect the relief valve spring for fatigue or spool for sticking.

Steering Wheel Kickback Diagnosis: Steering wheel kickback during operation typically indicates poor sealing in the inlet or internal check valve. Inspect the check valve sealing surfaces for wear or contamination, and replace the valve cartridge if necessary. Kickback may also indicate excessive system back pressure — inspect return lines for restrictions or filter differential pressure.

Oil Maintenance Schedule: Replace hydraulic oil and filter after the first 500 hours of operation. Thereafter, replace every 2,000 hours or 12 months, whichever comes first. Recommended viscosity grade: VG 32–46 mineral hydraulic oil, operating temperature range -20°C to +80°C. Steering units are sensitive to fluid contamination — contaminant particles can jam the metering motor rotor or valve spool. Maintain return filter efficiency at 10 μm or finer. Maximum continuous back pressure is 2.5 MPa; exceeding this value may damage steering unit seals.

Long-Term Storage Protection: For steering units stored over 3 months, drain housing oil, fill with rust-preventive oil, and plug all ports. Before recommissioning, flush with flushing oil for 20 minutes and confirm flushing oil cleanliness meets specification before connecting to the system. Always bleed the steering system after reinstallation.