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Woodward UG-10 Dial Installation And Operation Manual Download Page 5

Manual 03040 

UG Dial Governor 

 

 

 

Woodward 

iii 

 

 

Summary of Contents for UG-10 Dial

Page 1: ...Installation and Operation Manual UG Dial Governor UG 5 7 UG 8 UG 10 Dial Manual 03040 Revision E...

Page 2: ...that you have the latest revision be sure to check the Woodward website www woodward com pubs current pdf The revision level is shown at the bottom of the front cover after the publication number The...

Page 3: ...Procedures 22 Test Completion 25 CHAPTER 5 TROUBLESHOOTING 26 Introduction 26 Troubleshooting 26 Definitions 27 Preliminary Inspection 27 Additional Information for Steam Turbines Gas and Gasoline Eng...

Page 4: ...al Governor 43 Figure 6 1e Parts Illustration for the UG Dial Governor 45 Figure 7 1 UG Cover with Bodine Motor and Shutdown Solenoid 46 Figure 7 2 Installing Cover with Bodine Synchronizer Motor 47 F...

Page 5: ...Manual 03040 UG Dial Governor Woodward iii...

Page 6: ...UG Dial Governor Manual 03040 iv Woodward Figure 1 1 UG 8 Dial Governor...

Page 7: ...he recommended travel of the output shaft is 28 from no load to full load which allows sufficient overtravel at each end so that the governor can shut down the prime mover and also give maximum fuel w...

Page 8: ...or UG Governors Manual 03016 Low Lube Oil Pressure Shutdown for UG Governors Product Spec 03029 UG 5 7 8 10 Governor Manual 03035 PM Speed Adjusting Motor Manual 03505 Speed Adjusting Synchronizing Mo...

Page 9: ...Manual 03040 UG Dial Governor Woodward 3 Figure 1 3 UG Dial Governor Outline Drawing...

Page 10: ...rage If a governor is being stored for any period of time please refer to Woodward manual 25075 Commercial Preservation Packaging for Storage of Mechanical Hydraulic Controls Mounting Requirements 1 M...

Page 11: ...gine drive pad Be sure there is adequate space available around the governor to provide easy access for installing the control linkage filling the governor with oil and adjusting the speed and compens...

Page 12: ...oad to full load In order to improve governing control at light loads a compensating linkage is devised non linear linkage This linkage provides greater movement of the governor per increment of valve...

Page 13: ...and it must have the proper blending of additives that cause it to remain stable and predictable throughout this range Governor oil must be compatible with seal materials particularly nitrile polyacry...

Page 14: ...UG Dial Governor Manual 03040 8 Woodward Table 2 1 Oil Chart Table 2 2 Viscosity Comparisons...

Page 15: ...r with a clean solvent having some lubricating quality such as fuel oil or kerosene before refilling with new oil If drain time is insufficient for the solvent to completely drain or evaporate flush t...

Page 16: ...ation One pump gear is part of the rotating bushing and the other is part of the laminated drive The rotating bushing is driven by the governor drive shaft which is driven by the prime mover As the bu...

Page 17: ...s reduced The pilot valve plunger has a control land that regulates oil flow through ports in the bushing When the pilot valve plunger 39 is lowered high pressure oil flows under the power piston 9 ra...

Page 18: ...UG Dial Governor Manual 03040 12 Woodward Figure 3 1 UG Dial Governor Schematic Diagram...

Page 19: ...ng speed droop characteristic in the governor The change of speed setting is followed by a slow return of speed setting to its original value Compensation is simply another word for temporary speed dr...

Page 20: ...e load limit shutdown lever 20 is forced downward it pivots about its fulcrum and lifts the pilot valve plunger 39 releasing oil from under the power piston 9 Pressure oil acting on top of the power p...

Page 21: ...t varies the compression of the speeder spring as the output shaft rotates Increasing the fuel reduces speeder spring compression and in turn the governor speed setting The unit gradually reduces its...

Page 22: ...opening the control port in the rotating bushing 38 Oil is released from the bottom of the power piston 9 to sump 4 Pressure oil on the top side of the power piston 9 moves it downward rotating the g...

Page 23: ...to the bottom side of the small dashpot compensation piston 35 raising the left end of the floating lever 31 7 This raises the pilot valve plunger 39 closing the control port 37 8 As pressure oil flo...

Page 24: ...the initial compensation setting can be the same as the governor just removed Be prepared to make an emergency shutdown when starting the engine turbine or other type of prime mover to protect against...

Page 25: ...s is called governor hunt See Chapter 5 for more information on hunting There are two screwdriver slots in the needle valve a shallow and a deep slot located at right angles to each other The deeper s...

Page 26: ...e hunting Once the needle valve adjustment is correct it is not necessary to change the setting except for large permanent changes in temperature which affect governor oil viscosity When the compensat...

Page 27: ...output shaft 3 Rotate the governor output shaft from minimum to maximum fuel position and check the dial indicator 4 No movement of the indicator is zero droop If movement is greater than 0 05 mm 0 00...

Page 28: ...dle valve to avoid damage to the threads inside the bore and to the needle valve Let the prime mover hunt for approximately 30 seconds to remove trapped air from the governor oil passages 7 Close the...

Page 29: ...g 250 on the friction drive using a No 1 Truarc pliers Do not let the cover 214 or the spring 252 fall into the governor as the friction drive cover is under spring compression Check the torque of the...

Page 30: ...er catch will provide the normal high speed stop for the governor If necessary set the high speed stop to the lever engaged position and then disengage the lever and advance to the normal high speed s...

Page 31: ...knobs of the governors that have speed droop to distribute load between units When two units are set up for optimum single unit performance paralleling problems can be encountered For example governor...

Page 32: ...he oil sight glass with the unit operating The correct oil level is 19 to 32 mm 0 75 to 1 25 inch below the top of the governor case Dirty oil causes most governor problems Use clean new or filtered o...

Page 33: ...re should be performed 1 Check the load to be sure the speed changes are not the result of load changes beyond the capacity of the prime mover 2 Check engine operation to be sure all cylinders are fir...

Page 34: ...over If after removing the block hunting and or surging starts again the problem can be in the governor or in the prime mover Go through the compensation adjustment procedure for the governor see Chap...

Page 35: ...vernor output shaft travel Stability and good steady state performance will suffer unless this condition is met O Incorrect non linear relationship between governor travel and power output of the prim...

Page 36: ...ssible causes are dirty or worn ballhead bearing rough or worn gear teeth bent speeder spring damaged drive shaft seal retainer Return governor to factory for repairs or Replace seal retainer E Air in...

Page 37: ...ion out of adjustment Reset droop See Chapter 4 Governor Operation and Adjustments Additional Information for Steam Turbines Gas and Gasoline Engines The engine torque versus throttle position for a s...

Page 38: ...place a governor on the engine or to replace seals or bearings on the governor remove the governor from the engine as follows Use care in handling and resting of the governor on the work area Do not s...

Page 39: ...Tool Description Ref Number Tool Number Application T handle hex wrench 7 16 T handle Allen wrench 3 16 Standard Allen wrench 5 64 Bench block No 2 Phillips head screwdriver Hooked scribe 1 2 3 4 5 6...

Page 40: ...tion wrench Torque wrench w 7 16 socket 7 8 9 10 11 12 13 14 8995 023 8995 024 030951 8995 017 030952 8995 028 030943 8995 038 Replace retaining ring on drive shaft Replace drive shaft bearing Fit on...

Page 41: ...part number shown on nameplate Manual number this is manual 03040 Parts reference number in parts list and description of part or part name Refer to repair manual 56103 for correct and safe procedures...

Page 42: ...mbly 1 03040 16 Straight pin 1 03040 17 Large dashpot compensation piston 1 03040 18 Large dashpot compensation spring 1 03040 19 Large dashpot compensation link 1 03040 20 Oilite bushing 2 03040 21 R...

Page 43: ...Manual 03040 UG Dial Governor Woodward 37 Figure 6 1a Parts Illustration for the UG Dial Governor...

Page 44: ...seal retainer 1 03040 74 Seal retainer gasket 1 03040 75 Small dashpot compensation piston assembly 1 03040 76 Small dashpot compensation spring 2 03040 77 Small dashpot spring seat not shown 1 03040...

Page 45: ...Manual 03040 UG Dial Governor Woodward 39 Figure 6 1b Parts Illustration for the UG Dial Governor...

Page 46: ...sembly 1 03040 168 Spirol pin 4 03040 169 Spring damped ballhead 1 03040 170 Speeder rod 1 03040 171 Ballhead assembly 1 03040 172 Speeder rod spring 1 03040 173 Thrust bearing 1 03040 174 Flexloc sto...

Page 47: ...Manual 03040 UG Dial Governor Woodward 41 Figure 6 1c Parts Illustration for the UG Dial Governor...

Page 48: ...03040 205 Lock washer No 10 8 03040 206 Cover gasket 1 03040 207 Soc hd pipe plug 1 8 1 03040 208 Base gasket 1 03040 209 Washer 4 03040 210 Cap screw 1 4 28 x 1 000 4 03040 211 Front panel gasket 1...

Page 49: ...Manual 03040 UG Dial Governor Woodward 43 Figure 6 1d Parts Illustration for the UG Dial Governor...

Page 50: ...69 Synchronizer indicator gear 1 03040 270 Indicator pointer 2 03040 271 Set screw 4 03040 272 Knob 1 03040 273 Plug 1 03040 274 Dial plate 1 03040 275 Knob 1 03040 276 Taper pin 6 0 x 750 3 03040 277...

Page 51: ...Manual 03040 UG Dial Governor Woodward 45 Figure 6 1e Parts Illustration for the UG Dial Governor...

Page 52: ...hutdown Early models of the synchronizer speed setting motor use an ac dc Bodine motor externally mounted and available in any of the following voltages 12 24 32 48 64 115 125 230 and 250 Late models...

Page 53: ...anged as required remotely Refer to manual 03505 for the parts reference and lubrication guide Figure 7 2 shows the method for installing the cover 267 when equipped with a motor Turn the synchronizer...

Page 54: ...vibrations The weatherproof housing for the PM synchronizer motor can also be equipped with a shutdown solenoid There are several supply voltages available for the solenoid Contact Woodward for addit...

Page 55: ...when engine oil pressure falls below a safe level There is no additional external linkage required For more information and parts illustration see manual 03016 Figure 7 6 Low Lube Oil Pressure Shutdo...

Page 56: ...s and Wiring Figure 7 9 Wiring Harness on Cover The micro switches are used in one of two ways 1 They energize a light which indicates the motor has reached its minimum or maximum speed setting positi...

Page 57: ...system documentation for details Woodward Business Partner Support Woodward works with and supports a global network of independent business partners whose mission is to serve the users of Woodward c...

Page 58: ...of a scheduled outage to request a replacement control unit If the unit is available at the time of the call it can usually be shipped out within 24 hours You replace your field control unit with the...

Page 59: ...rials when returning a complete control protective caps on any connectors antistatic protective bags on all electronic modules packing materials that will not damage the surface of the unit at least 1...

Page 60: ...th which our products interface For information on these services please contact us via telephone email us or use our website and reference www woodward com support and then Customer Support How to Co...

Page 61: ...steam etc Rating Application Control Governor Information Please list all Woodward governors actuators and electronic controls in your system Woodward Part Number and Revision Letter Control Descript...

Page 62: ...Drake Road Fort Collins CO 80525 USA Phone 1 970 482 5811 Fax 1 970 498 3058 Email and Website www woodward com Woodward has company owned plants subsidiaries and branches as well as authorized distr...

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