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Summary of Contents for Eaton EP Control
- Page 1 Electronic Proportional (EP) Control for Medium Duty 72400 Piston Pumps Parts & Service 08-10-0003 EN-0901...
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Page 2: Table Of Contents
Troubleshooting Reference Settings ........... . . 17 EATON EP Control for Medium Duty 72400 Piston Pumps Parts & Service 08-10-0003-EN-0901 September 2001... -
Page 3: Introduction
Performance values are typical values. Customers are responsible for selecting products for their applications using normal engineering methods. EATON EP Control for Medium Duty 72400 Piston Pumps Parts & Service 08-10-0003-EN-0901 September 2001... -
Page 4: Parts And Kits
Alternate reference source: Pioneer Standard Electronics 1-800-257-6613 9900045-000 Tool (1) 1209 4429 www.pios.com 4-Pin Housing Connector (Female) (1) 1218 6568 4-Pin Housing Connector (Male) (1) 1218 6271 EATON EP Control for Medium Duty 72400 Piston Pumps Parts & Service 08-10-0003-EN-0901 September 2001... -
Page 5: Tools Required
• 5/32" Bit Socket or Hex Key • 12 VDC Power Supply or Battery • 9/16" Open-End Wrench • Voltage Ohm Meter (VOM) • 3/4" Open-End Wrench • Charge Pressure Gauge EATON EP Control for Medium Duty 72400 Piston Pumps Parts & Service 08-10-0003-EN-0901 September 2001... -
Page 6: Disassembly
Disconnect the four-pin connector between the EP Control module and the solenoids. Caution must be used when disconnecting these connectors as they are latched with keepers. EATON EP Control for Medium Duty 72400 Piston Pumps Parts & Service 08-10-0003-EN-0901 September 2001... - Page 7 Note which slot the feedback link is assembled into. EATON EP Control for Medium Duty 72400 Piston Pumps Parts & Service 08-10-0003-EN-0901 September 2001...
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Page 8: Reassembly
Reassembly Step 9 Clean the EP Control mounting surface. Install a new control valve gasket by aligning with screw and porting holes. EATON EP Control for Medium Duty 72400 Piston Pumps Parts & Service 08-10-0003-EN-0901 September 2001... - Page 9 32.5 ±2.5 lbf·ft. Repeat for other tube subassembly. Replace the coils. Note: The position number stamped on the coil and the valve assembly must match. EATON EP Control for Medium Duty 72400 Piston Pumps Parts & Service 08-10-0003-EN-0901 September 2001...
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Page 10: Neutral Adjustment
Use a 9/16" end wrench to hold the locking nut while rotating the neutral adjustment screw. EATON EP Control for Medium Duty 72400 Piston Pumps Parts & Service 08-10-0003-EN-0901 September 2001... - Page 11 Replace the 10- 24 cap screws on the pump and torque with 5/32" hex key or bit socket to 60-68 lbf·in. Install and Torque EATON EP Control for Medium Duty 72400 Piston Pumps Parts & Service 08-10-0003-EN-0901 September 2001...
- Page 12 12. Recheck your work and then reconnect the power to the vehicle or system. Step 22 The pump is now ready to return to operation. EATON EP Control for Medium Duty 72400 Piston Pumps Parts & Service 08-10-0003-EN-0901 September 2001...
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Page 13: Interconnect Schematic
-20 mA signal to operate the *Note: Actual flow direction depends Full Stroke Port A Flow* on pump type and rotation pump in the opposite direction. Typical Control Characteristics EATON EP Control for Medium Duty 72400 Piston Pumps Parts & Service 08-10-0003-EN-0901 September 2001... -
Page 14: Troubleshooting
“B” at the connector. The DC voltage reading should be approximately zero at zero input current which occurs at command input neutral. The DC voltage reading should be approximately ±5 volts for input command currents of ±20 mA respectively. EATON EP Control for Medium Duty 72400 Piston Pumps Parts & Service 08-10-0003-EN-0901 September 2001... - Page 15 The DC voltage reading should be approxi- mately ±5 volts for input command currents of ±20 mA respectively. EATON EP Control for Medium Duty 72400 Piston Pumps Parts & Service 08-10-0003-EN-0901 September 2001...
- Page 16 Remove the EP Control electronic module. Refer to instructions on page 5. Disconnect the two solenoid four-pin connectors. Follow instructions for setting neutral on page 9 Step 15. EATON EP Control for Medium Duty 72400 Piston Pumps Parts & Service 08-10-0003-EN-0901 September 2001...
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Page 17: Troubleshooting Reference Settings
ORANGE & BLACK WIRES Max command in Minimum 1.5 A one direction Maximum 2.0 A Neutral Max command in Minimum 1.5 A the same direction Maximum 2.0 A EATON EP Control for Medium Duty 72400 Piston Pumps Parts & Service 08-10-0003-EN-0901 September 2001... - Page 18 Fax: (44) 23 92 487 110 DET NORSKE VERITAS INDUSTRY BV, THE NETHERLANDS www.eaton.com Quality System Certified Products in this publication are manufactured in an ISO-9001-certified site. © 2001 Eaton Corporation All Rights Reserved Printed in USA Form No. 08-10-0003 EN-0901 September 2001...
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