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Summary of Contents for Woodward PG-EG
- Page 1 Product Manual 36637 (Revision G, 8/2014) Original Instructions PG-EG Integral EG Actuator for PG Governors 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.
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Page 3: Table Of Contents
Manual 36637 PG-EG Integral EG Actuator for PG Governors Contents ................ EGULATORY OMPLIANCE ................ ARNINGS AND OTICES ..........LECTROSTATIC ISCHARGE WARENESS 1. G ............1 HAPTER ENERAL NFORMATION Introduction ......................1 Description ......................1 ... - Page 4 Figure 3-2. PG-EG Schematic, without Mode Select Valve ......... 13 Figure 3-3. PG-EG Schematic, with Mode Select Valve, Controlling on PG ..14 Figure 3-4. PG-EG Schematic, with Mode Select Valve, Controlling on EG ..15 ...
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Page 5: Warnings And Notices
Manual 36637 PG-EG Integral EG Actuator for PG Governors Warnings and Notices Important Definitions This is the safety alert symbol. It is used to alert you to potential personal injury hazards. Obey all safety messages that follow this symbol to avoid possible injury or death. -
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: Chapter 1. General Information
(PGA-EG or PGG-EG) from the PGA or PGG governor. In this manual, PG-EG refers to any of these three governor types. This manual covers the EG, governor components affected by the EG, and information pertaining to the PG-EG. For more general governor information, refer to the PGA governor manual (36604) or the PGG governor manual (36627). -
Page 8: Figure 1-1. Pg-Eg Actuator Connections
PG-EG Integral EG Actuator for PG Governors Manual 36637 Figure 1-1. PG-EG Actuator Connections Woodward... -
Page 9: Figure 1-2. Pga/Pgg-Eg Governor Connections (Without Mode Select Block)
Manual 36637 PG-EG Integral EG Actuator for PG Governors Figure 1-2. PGA/PGG-EG Governor Connections (without mode select block) Woodward... -
Page 10: Figure 1-3. Pga/Pgg-Eg Governor Connections (With Mode Select Block)
PG-EG Integral EG Actuator for PG Governors Manual 36637 Figure 1-3. PGA/PGG-EG Governor Connections (with mode select block) Woodward... -
Page 11: Figure 1-4. Pga-Eg 200/300 Outline Drawing
Manual 36637 PG-EG Integral EG Actuator for PG Governors Figure 1-4. PGA-EG 200/300 Outline Drawing Woodward... -
Page 12: Chapter 2. Installation
PG-EG Integral EG Actuator for PG Governors Manual 36637 Chapter 2. Installation Introduction This chapter describes receiving, storage, and installation requirements for the actuator. Due to typical noise levels in turbine or engine environments, hearing protection should be worn when working on or around the actuator. -
Page 13: Storage
Manual 36637 PG-EG Integral EG Actuator for PG Governors Most PG governors lift from an eye-bolt threaded into a 0.375-16 (inch) hole in the center of the cover. PG-200, PG-300, and PG-500 governors must be lifted with a sling. Some PG governors have split covers which need to be lifted with a sling as well. -
Page 14: Electrical And Hydraulic Connections
PG-EG Integral EG Actuator for PG Governors Manual 36637 The fuel-control linkage must be adjusted so at least 15 % of the governor travel (output) from minimum position has been used when the fuel control is at idle no- load (A and D; see Figure 2-1). This minimum setting is required due to the location of the compensation cut-off port (if so equipped). -
Page 15: Clearances
USE ONLY NEW, CLEAN OIL. DO NOT USE USED ENGINE OIL IN THE GOVERNOR. Woodward governors and actuators are designed to give stable operation with oils which provide 50 to 3000 SUS (Saybolt Universal Seconds) of viscosity throughout the operating temperature range. Ideally the viscosity at the normal operating temperature should be between 100 and 300 SUS. -
Page 16: Governor Oil Service
PG-EG Integral EG Actuator for PG Governors Manual 36637 Excessive component wear or seizure in a governor indicates the possibility of insufficient lubrication caused by: An oil that flows slowly when it's cold or at start-up; High or low governor oil level;... -
Page 17: Figure 3-1. Schematic Of Pilot Valve And Pressure Regulator Section
Manual 36637 PG-EG Integral EG Actuator for PG Governors PG-EG 200, 300, and 500 cases must be filled in two stages. Fill with about 4 liters/quarts before starting, then add the amount needed to bring the oil up to operating levels after start-up. On these governors, there is an oil level dipstick inside the fill port cap. -
Page 18: Chapter 3. Principles Of Operation
PG-EG Integral EG Actuator for PG Governors Manual 36637 Chapter 3. Principles of Operation Flapper Nozzle System The flapper nozzle system is basically a hydraulic amplifier which converts the torque motor beam position through the pilot valve into a servo position. Pump pressure oil is supplied to the interior of the pilot valve and lowered by the pressure regulating valve into the regulated pressure at 690 kPa (100 psi). -
Page 19: Direct And Reverse Acting
The same set of springs may be set for either a direct- or reverse-acting actuator. The only difference is the level to which the level-adjust spring is set, and the wires to the torque-motor which are reversed. Figure 3-2. PG-EG Schematic, without Mode Select Valve Woodward... -
Page 20: Figure 3-3. Pg-Eg Schematic, With Mode Select Valve, Controlling On Pg
PG-EG Integral EG Actuator for PG Governors Manual 36637 Figure 3-3. PG-EG Schematic, with Mode Select Valve, Controlling on PG Woodward... -
Page 21: Figure 3-4. Pg-Eg Schematic, With Mode Select Valve, Controlling On Eg
Manual 36637 PG-EG Integral EG Actuator for PG Governors Figure 3-4. PG-EG Schematic, with Mode Select Valve, Controlling on EG Woodward... -
Page 22: Figure 3-5. Eg Actuator Schematic, No Ballhead Backup
PG-EG Integral EG Actuator for PG Governors Manual 36637 Figure 3-5. EG Actuator Schematic, No Ballhead Backup Woodward... -
Page 23: Chapter 4. Operation And Adjustments
Manual 36637 PG-EG Integral EG Actuator for PG Governors Chapter 4. Operation and Adjustments Introduction Because the PGA-EG and PGG-EG are each a combination of an electric actuator and a ballhead governor, routine start-up adjustments can be more complex than on other governors. -
Page 24: Adjustment Of The Anti-Rotation Device
Manual 36637 Adjustment of the Anti-rotation Device On the PG-EG actuator with no ballhead, to prevent the feedback lever between the tailrod and the actuator from becoming dislodged by vibration, an anti-rotation device has been added. It consists of a steel plate mounted on the cover of the torque motor which guides a pin protruding from the tailrod. -
Page 25: Parts List For Figure 4-1
Manual 36637 PG-EG Integral EG Actuator for PG Governors Figure 4-1. Torque Motor Exploded View Parts List for Figure 4-1 Ref. No. Part Name ......Quantity Ref. No. Part Name ......Quantity 36637-1 internal retaining ring ......1 36637-20 flapper spacer ........1 36637-2 bi-metal washer ........ -
Page 26: Figure 4-2. Mode Select Block Exploded View
PG-EG Integral EG Actuator for PG Governors Manual 36637 Figure 4-2. Mode Select Block Exploded View Woodward... -
Page 27: Parts List For Figure 4-2
Manual 36637 PG-EG Integral EG Actuator for PG Governors Parts List for Figure 4-2 Ref. No. Part Name ......Quantity 36637-101 O-ring ..........1 36637-102 O-ring ..........2 36637-103 block- PG-200 ........1 36637-104 screw- .250-20 x 1.50 ......4 36637-105 washer .......... - Page 28 PG-EG Integral EG Actuator for PG Governors Manual 36637 Mode Select Valve A mode select valve allows the operator to choose and influence the mode the governor is controlling in. This can be done by means of either a manual, electrical, or pneumatic signal to the mode select valve.
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Page 29: Maintenance
Manual 36637 PG-EG Integral EG Actuator for PG Governors Direct Pneumatic—Air pressure drives a plunger which shuttles the direct-acting mode select valve plunger against the return spring to switch into PG mode. Removal or loss of air pressure will cause the return spring to move the plunger back and switch to EG mode. -
Page 30: Parts List For Figure 4-3
PG-EG Integral EG Actuator for PG Governors Manual 36637 Figure 4-3. Assembly and Tubing Exploded View Parts List for Figure 4-3 Ref. No. Part Name ......Quantity Ref. No. Part Name ......Quantity 36637-201 O-ring ..........3 36637-208 manifold block ........1 36637-202 connector- elbow ......... -
Page 31: Chapter 5. Product Support And Service Options
A current list of Woodward Business Partners is available at www.woodward.com/directory. Product Service Options Depending on the type of product, the following options for servicing Woodward products may be available through your local Full-Service Distributor or the OEM or Packager of the equipment system. -
Page 32: Returning Equipment For Repair
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 33: Engineering Services
Field Service engineering on-site support is available, depending on the product and location, from one of our Full-Service Distributors. The field engineers are experienced both on Woodward products as well as on much of the non- Woodward equipment with which our products interface. -
Page 34: Technical Assistance
Manual 36637 Technical Assistance If you need to contact technical assistance, you will need to provide the following information. Please write it down here before contacting the Engine OEM, the Packager, a Woodward Business Partner, or the Woodward factory: General... -
Page 35: Revision History
Manual 36637 PG-EG Integral EG Actuator for PG Governors Revision History Changes in Revision G— Updated Declaration of Incorporation Changes in Revision F— Added Regulatory Compliance information Added installation information and warnings to Chapter 2 Added Declarations Changes in Revision E—... -
Page 36: Declarations
PG-EG Integral EG Actuator for PG Governors Manual 36637 Declarations Woodward... - Page 37 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. Complete address / phone / fax / email information for all locations is available on our website.
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Questions and answers
ACTUATOR PGG -EG 58 GOVERNOR
The Woodward PG-EG actuator in the governor functions as a combination of an electric actuator and a ballhead governor. It allows for both mechanical control (PG mode) and electrical control (EG mode). The actuator regulates oil flow through the mode select valve to either the ballhead pilot valve (PG mode) or the actuator pilot valve (EG mode), enabling precise control of engine speed and dynamics.
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