Woodward EG3P Installation And Operation Manual
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Woodward EG3P Installation And Operation Manual

Hydraulic amplifier electrical input
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Product Manual 89015
(Revision H, 9/2018)
Original Instructions
Hydraulic Amplifier
(Electrical Input)
Installation and Operation Manual

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Summary of Contents for Woodward EG3P

  • Page 1 Product Manual 89015 (Revision H, 9/2018) Original Instructions Hydraulic Amplifier (Electrical Input) Installation and Operation Manual...
  • Page 2 Revisions—Changes in this publication since the last revision are indicated by a black line alongside the text. Woodward reserves the right to update any portion of this publication at any time. Information provided by Woodward is believed to be correct and reliable. However, no responsibility is assumed by Woodward unless otherwise expressly undertaken.

  • Page 3: Table Of Contents

    ..............25 HAPTER ERVICE PTIONS Product Service Options ..................25 Woodward Factory Servicing Options ..............26 Returning Equipment for Repair ................26 Replacement Parts ....................27 Engineering Services .................... 27 How to Contact Woodward ................... 28 Technical Assistance .................... 28 ..................
  • Page 4 Figure 5-1a. Parts for Electrically Controlled Hydraulic Amplifier (sheet 1) ..19 Figure 5-1b. Parts for Electrically Controlled Hydraulic Amplifier (sheet 2) ..21 Figure 5-2. Parts for EG-3P Actuator ..............24 Table 4-1. Troubleshooting Chart for EG-3P Actuator .........15 Table 4-2. Troubleshooting Chart for Hydraulic Amplifier ........16 Woodward...

  • Page 5: Warnings And Notices

    Start-up On- and off-highway Mobile Applications: Unless Woodward's control functions as the supervisory control, customer should install a system totally independent of the prime mover control system that...

  • Page 6: Electrostatic Discharge Awareness

    Do not touch the components or conductors on a printed circuit board with your hands or with conductive devices. To prevent damage to electronic components caused by improper handling, read and observe the precautions in Woodward manual 82715 , Guide for Handling and Protection of Electronic Controls, Printed Circuit Boards, and Modules.

  • Page 7: Regulatory Compliance

    Wiring must be in accordance with North American Class I, Division 2 or European Zone 2 wiring methods as applicable, and in accordance with the authority having jurisdiction. Field Wiring must be suitable for at least 90 °C. Connect ground terminal to earth ground. Woodward...
  • Page 8 RISQUE D’EXPLOSION—Ne pas raccorder ni débrancher tant que l’installation est sous tension, sauf en cas l’ambiance est décidément non dangereuse. La substitution de composants peut rendre ce matériel inacceptable pour les emplacements de Classe I, applications Division 2 ou Zone 2. Woodward...

  • Page 9: Chapter 1. General Information

    In most instances, the return spring is left out of the amplifier and an external return spring is provided by the user. Start oil cannot be used in the extend-to-increase models. Woodward...

  • Page 10: Optional Features

    (not supplied by the Woodward) must be connected to the starting oil port. For starting, the valve is turned to allow starting oil under the pilot valve plunger. The valve must be turned back to drain after start-up.

  • Page 11: Figure 1-1. 5-1/4" Hydraulic Amplifier With Optional Connector And Optional Output Shaft Scale

    Manual 89015 Hydraulic Amplifier (Electrical Input) Figure 1-1. 5-1/4” Hydraulic Amplifier with Optional Connector and Optional Output Shaft Scale Woodward...

  • Page 12: Figure 1-2. 5-1/4" Hydraulic Amplifier Dimensions

    Hydraulic Amplifier (Electrical Input) Manual 89015 Figure 1-2. 5-1/4” Hydraulic Amplifier Dimensions Woodward...

  • Page 13: Figure 1-3. 7-1/4" Hydraulic Amplifier Dimensions

    Manual 89015 Hydraulic Amplifier (Electrical Input) Figure 1-3. 7-1/4” Hydraulic Amplifier Dimensions Woodward...

  • Page 14: Chapter 2. Installation

    Provide the amplifier with an adequate supply of oil. Steady state leakage is less than 4 US gal/min (15 L/min) at 150 psi (1034 kPa), 60 SSU. Woodward...
  • Page 15 Make sure that the linkage connecting the amplifier to the fuel or steam control operates freely and has minimum backlash. Lower the amplifier piston rod 1/4” to 1/3” (6 to 8 mm) and adjust the connecting turn buckle until the fuel or steam control is in the desired position. Woodward...

  • Page 16: Chapter 3. Theory Of Operation

    The supply pressure on the loading piston then causes the output shaft to rotate in a decrease direction. As the output shaft rotates, its movement is followed by the feedback linkage which increases the restoring spring compression at a rate proportional to the movement of the output shaft. Woodward...

  • Page 17: Figure 3-1. Schematic Of Hydraulic Amplifier

    As the output shaft rotates, the feedback linkage decreases the restoring spring compression, which permits the magnet (and plunger) to re- center when the output shaft reaches its new position. Figure 3-1. Schematic of Hydraulic Amplifier Woodward...

  • Page 18: Figure 3-2. Schematic Of Hydraulic Amplifier (Plug, Solid Pilot Valve Plunger)

    Movement of the piston continues until the pilot valve plunger is again centered by the floating lever. Woodward...

  • Page 19: Figure 3-3. Schematic Of Hydraulic Amplifier (Transfer Valve, Yield Plunger, 3-Way Valve)

    If the oil supply comes from the prime mover and an auxiliary supply of low pressure oil must be used for starting (such as from a hand pump), a transfer valve is used. It is used to minimize the force acting on the bottom side of the servo piston. Woodward...

  • Page 20: Figure 3-4. Schematic Of Hydraulic Amplifier (Yield Plunger, Transfer Valve In Closed Position)

    The starting valve remains in the open position during normal operation. At shutdown, the spring returns the plunger to the closed position. Figure 3-4. Schematic of Hydraulic Amplifier (yield plunger, transfer valve in closed position) Woodward...

  • Page 21: Chapter 4. Troubleshooting

    Set the switch to NORMAL and operate the amplifier by changing the potentiometer setting. If the amplifier operation is within specifications, check the electronic control. See the correct manual for troubleshooting the electronic control. Figure 4-1. Test Circuit for the Hydraulic Amplifier Woodward...

  • Page 22: Figure 4-2. Micarta Block For Holding Pilot Valve Plunger Open

    EG-3P actuator, and find the description for that problem. lf the EG-3P actuator is operating correctly, see the troubleshooting section for the hydraulic amplifier. Figure 4-2. Micarta Block for Holding Pilot Valve Plunger Open Woodward...

  • Page 23: Extend To Increase Test

    Replace worn or damaged parts Linkage does not move freely. as needed. Repair or replace bad wiring or Intermittent open or high resistance in electrical connector. wiring or electrical connector. Replace spring. Magnet spring broken or missing. Woodward...
  • Page 24 If condition continues, servo piston may go to full increase disassemble and clean amplifier. with decreasing input signal. Replace plunger and/or sleeve if sharp edges have been damaged. Woodward...
  • Page 25 Yield spring broken or missing. Piston Replace yield spring and/or hold position. The rod ring not correctly fastened. retaining rings as needed. servo piston will move full stroke either direction with small change in input signal to the actuator. Woodward...

  • Page 26: Chapter 5. Replacement Parts

    O-ring, 4.984 l.D. x 0.139 ..........1 89015-42 Servo piston...............1 89015-43 Spring ................1 89015-44 Hydraulic amplifier case ............1 89015-45 Connector gasket ..............1 89015-46 Hydraulic amplifier electrical connector ......1 89015-47 Splitlock washer, #6 ............4 89015-48 Screw, 6-32 x 0.312 ............4 89015-49 Case to cover gasket ............1 Woodward...

  • Page 27: Figure 5-1A. Parts For Electrically Controlled Hydraulic Amplifier (Sheet 1)

    Manual 89015 Hydraulic Amplifier (Electrical Input) Figure 5-1a. Parts for Electrically Controlled Hydraulic Amplifier (sheet 1) Woodward...
  • Page 28 Pin ..................1 89015-89 Retainer ................1 89015-90 Retaining ring ..............1 89015-91 Spring ................1 89015-92 Pilot valve sleeve ...............1 89015-93 Link ..................1 89015-94 O-ring - 1.614 ID x .070 .............1 89015-95 Bottom drain plug through 100 ..........1 89015-96 through 100 NOT USED Woodward...

  • Page 29: Figure 5-1B. Parts For Electrically Controlled Hydraulic Amplifier (Sheet 2)

    Manual 89015 Hydraulic Amplifier (Electrical Input) Figure 5-1b. Parts for Electrically Controlled Hydraulic Amplifier (sheet 2) Woodward...
  • Page 30 Drilled headed pin ..............1 89015-155 Push rod assembly ............2 89015-156 Feedback link ..............1 89015-157 Feedback link pin ...............1 89015-158 Output Shaft ..............1 89015-159 Long lever ................1 89015-160 Straight drilled pin ..............1 89015-161 Roll pin, 0.062 dia. x 0.438 S.S.........2 Woodward...
  • Page 31 Plug - .500-14 ..............1 89015-197 Adapter ................1 89015-198 Plug .500-14 ..............1 89015-199 Terminal ................2 89015-200 Terminal cup Washer ............2 89015-201 Screw 6-32 x .250 ............. 2 89015-202 Screw 10-32 x .875 ............4 89015-203 Washer................4 Woodward...

  • Page 32: Figure 5-2. Parts For Eg-3P Actuator

    Hydraulic Amplifier (Electrical Input) Manual 89015 Figure 5-2. Parts for EG-3P Actuator Woodward...

  • Page 33: Chapter 6. Service Options

    Woodward systems and components for the retrofits and overhauls, long term service contracts, emergency repairs, etc. You can locate your nearest Woodward distributor, AISF, RER, or RTR on our website at: www.woodward.com/directory...

  • Page 34: Woodward Factory Servicing Options

    Flat Rate Remanufacture: Flat Rate Remanufacture is very similar to the Flat Rate Repair option with the exception that the unit will be returned to you in “like- new” condition and carry with it the full standard Woodward product warranty (Woodward Product and Service Warranty 5-01-1205). This option is applicable to mechanical products only.

  • Page 35: Replacement Parts

    Engineering Services Woodward offers various Engineering Services for our products. For these services, you can contact us by telephone, by email, or through the Woodward website.  Technical Support ...

  • Page 36: How To Contact Woodward

    Hydraulic Amplifier (Electrical Input) Manual 89015 How to Contact Woodward For assistance, call one of the following Woodward facilities to obtain the address and phone number of the facility nearest your location where you will be able to get information and service.

  • Page 37: Revision History

    Updated Regulatory Compliance information  Updated Declaration of Conformity and Declaration of Incorporation Changes in Revision G—  Added electrostatic discharge warnings (pages v, 6, 25) Changes in Revision F—  Increased amplifier piston rod adjustment range (page 7) Woodward...

  • Page 38: Declarations

    Hydraulic Amplifier (Electrical Input) Manual 89015 Declarations Woodward...
  • Page 39 Manual 89015 Hydraulic Amplifier (Electrical Input) Woodward...
  • Page 40 89015H Please reference publication ËB89015è:èHµ ¹ ´ º ´ ¹ Î PO Box 1519, Fort Collins CO 80522-1519, USA 1041 Woodward Way, Fort Collins CO 80524, USA Phone +1 (970) 482-5811 Email and Website—www.woodward.com Woodward has company-owned plants, subsidiaries, and branches, as well as authorized distributors and other authorized service and sales facilities throughout the world.

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