riverhawk IM-255 User manual

Repairs – Rentals
Field Service
215ClintonRoad
NewHartford,NY13413
Tel:+13157684855
Fax:+13157684941
Email:[email protected]
RevisionC
Page1of41
WARNING: THIS MANUAL IS ONLY FOR
HYDRAULIC TENSIONERS WITH
THE ORANGE SAFETY GUARD.
DO NOT USE IF THE GUARD
IS A DIFFERENT COLOR.


INSTRUCTIONMANUALIM‐255
ForSyngasTurbineTensionedStudsandNuts

ApplicableBoltingConnections
7FBSyngasTurbinetoLoadCoupling
7FBSyngasLoadCouplingtoGenerator

ApplicableGEOrderingSheetPartNumbers
101T4503P001
101T4503P002
101T4503P003
101T4503P004
101T4503P005
101T4503P006
101T4503P007



 
GEPower&Water
GENERALELECTRICCOMPANY
MLI: ____ OF ____
DATE

CUSTOMER'SINFORMATIONBOX
CONTENTSAREINDEPENDENTOFRIVERHAWKDOCUMENTCONTROL
ISSUED:
THISDOCUMENTSHALLBEREVISEDINITSENTIRETY.ALLSHEETSOFTHISDOCUMENTARE
THESAMEREVISIONLEVELASINDICATEDINTHISVENDORSUPPLIEDDRAWINGAPPLIQUE.
REV
373A4038
GEDRAWINGNUMBER
VENDORSUPPLIED
THISDOCUMENTISFILEDUNDERTHEGEDRAWINGNUMBER.
GENOTTOREVISE.GEREVISIONLEVELISSHOWNONTHISAPPLIQUE.
GESIGNATURES
CHECKED:



TheRiverhawkCompanyreservestherighttomakechangesupdatingthisdocumentwithoutdisseminationornotice.
The latest revision level may be obtained by contacting Riverhawk Company directly or at our website
www.riverhawk.com.


Instruction Manual IM-255
For Gas Turbine Tensioned Studs & Nuts
CUSTOMER'SINFORMATIONBOX
CONTENTSAREINDEPENDENTOFRIVERHAWKDOCUMENTCONTROL

215ClintonRoad
NewHartford,NY13413
Tel:+13157684855
Fax:+13157684941
Email:[email protected]


REV
373A4038
GEDRAWINGNUMBER

RevisionC
Page2of41
TableofContents

Section Description Page
Number
1.0 CautionsandSafetyWarnings 3
2.0 ScopeandGEPartNumberCross‐Reference 4
3.0 QuickCheck‐List 5
4.0 GeneralPreparations 13
5.0 HardwareSetPreparations 15
6.0 NutandStudAssembly 17
7.0 HydraulicEquipmentPreparations 20
8.0 AssemblyofTensioneronStud 22
9.0 StudPullingandTensioning 26
10.0 ThreadLocking 29
11.0 Stud/NutRemoval 30
12.0 Storage 31
13.0 FrequentlyAskedQuestions 32
14.0 RevisionHistory 34
AppendixA1 ECDeclarationofConformity 35
AppendixA2 UKCADeclarationofConformity 36
AppendixB1 HydraulicFittings 37
AppendixB2 PullerScrewReleaseTape 38
AppendixB3 HydraulicTensioner’sBurstDiscReplacement 39

Instruction Manual IM-255
For Gas Turbine Tensioned Studs & Nuts
CUSTOMER'SINFORMATIONBOX
CONTENTSAREINDEPENDENTOFRIVERHAWKDOCUMENTCONTROL

215ClintonRoad
NewHartford,NY13413
Tel:+13157684855
Fax:+13157684941
Email:[email protected]


REV
373A4038
GEDRAWINGNUMBER

RevisionC
Page3of41
AppendixC1 18‐BoltTensioningPattern(GT‐LC)RecordSheet 40
AppendixC2 16‐BoltTensioningPattern(LC‐GEN)RecordSheet 41


1.0CautionsandSafetyWarnings

NOTICE
Asofsummer2011,thismanualistobeusedinrelationtotheinterlockingstyletensioner.This
new tensioner can be identified buy its ORANGE safety guard.  Note: yellow guarded tensioner
requirestheuseofdifferentsetofinstructions,consultRiverhawkforassistance

TOAVOIDFAILURE,ENSURESAFETYANDPROPEROPERATIONTHETENSIONERANDINERLOCK
SAFETYGUARDMUSTINSTALLEDONTHEFLANGEBEFORETENSIONINGBEGINS.DONOTUSETHE
TENSIONERASSEMBLYATANYPRESSUREUNLESSTHETOOLISINSTALLEDONTHEFLANGE.

WARNING
Impropertooluseandthefailuretofollowthecorrectproceduresaretheprimaryrootcausesoftool
failuresandpersonalinjuries.Alackoftrainingorexperiencecanleadtoincorrecthardware
installationorincorrecttooluse.Onlytrainedoperatorswithcareful,deliberateactionsshoulduse
hydraulictensioners.ContactRiverhawkCompanywithanytrainingneeds.

WARNING
Riskofhighpressurefluidinjection.Riverhawktoolsoperateunderhighpressure.Thoroughlyinspect
allhosesandconnectionsfordamageorleakspriortousingthisequipment.

CAUTION
Personalinjuryandequipmentdamagecanoccurifthepullerscrewisnotsecurelyengagedwith
theconicalthreadofthestud.Properengagementisachievedwhenthepullerscrewistightinthe
studandisnotcross‐threadedintotheconicalthread.

WARNING
Theproperpersonalprotectiveequipmentmustbewornatalltimes.Riverhawkrecommendsata
minimum,safetyglasses,longsleeveshirt,hardhat,heavyworkgloves,andsteeltoeshoes.

WARNING
ThesafetyguardMUSTbeinplaceandhandskeptoutofdesignatedareasatalltimeswhenthe
tensionerispressurizedotherwisepersonalinjurycanoccur.

Instruction Manual IM-255
For Gas Turbine Tensioned Studs & Nuts
CUSTOMER'SINFORMATIONBOX
CONTENTSAREINDEPENDENTOFRIVERHAWKDOCUMENTCONTROL

215ClintonRoad
NewHartford,NY13413
Tel:+13157684855
Fax:+13157684941
Email:[email protected]


REV
373A4038
GEDRAWINGNUMBER

RevisionC
Page4of41

CAUTION
DONOTEXCEEDTHEMAXIMUMPRESSUREMARKEDONTHETENSIONER.Excessivepressurecan
damagethestudandthepullerscrew.

WARNING:
Keephandsclearofthetoolwhilethepressureisbuildingup.Thisincludesthepinwrenchfor
tighteningthespannerring(nut).Oncethetoolisstabilizedatpressurethenandonlythencanthe
nutbetightened.Thisreducesthepotentialofpersonalinjury.

Note:Beforethreadingthepullerscrewintothestud,carefullycheckthecleanlinessofboththe
stud's and the puller screw's conical threads. Apply a light coat of clean turbine oil or a spray
lubricanttothepullerscrew.Donotuse“NeverSeize”ontheconicalthreads.Thisprocedurewill
easeassemblyandassurepositivematingofthethreadsbeforetightening.


2.0Scope

Thisdocumentdescribesthestepstoinstallasetofhardwarecontainingthestudsandnutssupplied
byRiverhawkCompanyattheturbine/couplingandcoupling/generatorconnections.Thishardware
isdepictedonthefollowingdrawings.Thesedrawingsaswellastoolingdrawingsformpartofthis
manual.

GEOrderingSheet
PartNumber
GEDrawing
Numberfor
HardwareSet
Riverhawk
HardwareSet
PartNumber HardwareSetDescription
101T4503P001
101T4503P002#359B2514 HF‐0771
2‐1/4"and2‐3/4"Hardware
Setfor7F(bothendsofload
coupling)
101T4503P003# n/a n/a
2‐1/4”and2‐3/4”Installation
toolingonly(includesHydraulic
pump)
101T4503P004 359B2539 HF‐2447 2‐1/4"HardwareSetfor7F
(turbineendofloadcoupling)

Instruction Manual IM-255
For Gas Turbine Tensioned Studs & Nuts
CUSTOMER'SINFORMATIONBOX
CONTENTSAREINDEPENDENTOFRIVERHAWKDOCUMENTCONTROL

215ClintonRoad
NewHartford,NY13413
Tel:+13157684855
Fax:+13157684941
Email:[email protected]


REV
373A4038
GEDRAWINGNUMBER

RevisionC
Page5of41
101T4503P005 359B2520 HF‐0803
2‐3/4"HardwareSetfor7F
(generatorendofload
coupling)
101T4503P006# n/a n/a
HydraulicTensionerfor2‐1/4”
hardware(Hydraulicpumpand
hardwaresetarenotincluded
withthispart)
101T4503P007# n/a n/a
HydraulicTensionerfor2‐3/4”
hardware(Hydraulicpumpand
hardwaresetarenotincluded
withthispart)

#denotesGEpartnumbersthatincludeinstallationtooling


3.0QuickChecklist

ThefollowingchecklistisintendedasasummaryofthestepsneededtousetheRiverhawk‐supplied
equipment. New personnel or those experienced personnel who have not used the Riverhawk
equipmentrecentlyareencouragedtoreadtheentiremanual.
EQUIPMENTINSPECTION
□ Checkoillevelinhydraulicpump.
□ Checkairpressureat80psi[5.5bar]minimum.(Forair‐drivenpumps)
□ Checkhydraulichoseforanydamage.
□ Testpump.
□ Inspecttensionerforanydamage.
NUTANDSTUDPREPARATION
□ Inspectstudsandnutsforanydamage.
□ Cleanthestudsandnuts.

Instruction Manual IM-255
For Gas Turbine Tensioned Studs & Nuts
CUSTOMER'SINFORMATIONBOX
CONTENTSAREINDEPENDENTOFRIVERHAWKDOCUMENTCONTROL

215ClintonRoad
NewHartford,NY13413
Tel:+13157684855
Fax:+13157684941
Email:[email protected]


REV
373A4038
GEDRAWINGNUMBER

RevisionC
Page6of41
□ Measurestudlengths.(VERYIMPORTANT)
□ Installstudsandnutsintotheflange.
□ Setstick‐outdimensiononthecouplingsideoftheflange.
□ Handtightennutsongeneratorsideofflange.
□ Verifystick‐outmeasurement(VERYIMPORTANT)
Tensioning(StudInstallationGASTURBINEEND)
□ Checktensioner’sdrawingforcorrectpartsandpartnumbers.
□Applyalightcoatofcleanturbineoilorspraylubricanttothepullerscrew.DONOTUSE
“NEVERSEIZE”ONTHECONICALTHREADS.
□Installspannerringontothenut.
□ Installonepullerscrewreleasetapestripintostud.(AppendixB2)
□Threadpullerscrewontothestud.
□InsertAllenwrenchintothebacksideofthestudtostopthestudfromrotatingwhen
installingthepullerscrew.
□UsinganAllenwrench,tightenthepullerscrew.Thenbackoffpullerscrew1/2aturn.
□Retightenpullerscrewbyhanduntilitisfullyinserted.DONOTBACKOFFPULLERSCREW.
□Slidefootoverthepullerscrewandorientateintoposition.
□Threadthetensionerontopullerscrew.Lightlyturnthetensionerontothepullerscrew
untilitstops.Thegapbetweenthefootandtensionerisabout1/16”to3/16”
□Placeguardovertensionerandpositionguidepinintotheholeinthebacksideofthestud.

Instruction Manual IM-255
For Gas Turbine Tensioned Studs & Nuts
CUSTOMER'SINFORMATIONBOX
CONTENTSAREINDEPENDENTOFRIVERHAWKDOCUMENTCONTROL

215ClintonRoad
NewHartford,NY13413
Tel:+13157684855
Fax:+13157684941
Email:[email protected]


REV
373A4038
GEDRAWINGNUMBER

RevisionC
Page7of41
□Tightenknurledinterlockfittingbyhanduntilitpressesfirmlyagainsttensioner.(nogap)
□Slideandengagecustomerconnectorfromrearofguardtolocktensionerintoplace.
□Tensionto50%.Consultmanualforcorrectpressure.
□Usethepinwrenchinthespannerringtotightennut.
□Releasepressureandallowthetensionertofullyretract.
□Disconnectthehosefromthetensioner.
□Loosentheknurledfittingandremovethesafetyguard.
□
Unscrewthetensionerfromthepullerscrew.Usecautiontoensurethathandsarenot
betweenthetensionerandthecouplingwhenthetensionerbecomesdisengagedfrom
thepullerscrew.
□Removethefoot.
□Removethepullerscrewfromthestud.
□Removethespannerringfromthenutandmovetothenextstudinthepattern.
□Tensionallstudsto50%beforeproceedingtofinalpressure.
□ Repeattheabovestepsatthefinalpressure.
□ Measurethefinalstudlengthandrecordonthestretchdatasheets.Calculatethestretch
andverifypersection9.2
□ Torquethenuts’setscrewspersection10

Instruction Manual IM-255
For Gas Turbine Tensioned Studs & Nuts
CUSTOMER'SINFORMATIONBOX
CONTENTSAREINDEPENDENTOFRIVERHAWKDOCUMENTCONTROL

215ClintonRoad
NewHartford,NY13413
Tel:+13157684855
Fax:+13157684941
Email:[email protected]


REV
373A4038
GEDRAWINGNUMBER

RevisionC
Page8of41
Tensioning(StudInstallationGENERATOREND)
□ Checktensioner’sdrawingforcorrectpartsandpartnumbers.
□Applyalightcoatofcleanturbineoilorspraylubricanttothepullerscrew.DONOTUSE
“NEVERSEIZE”ONTHECONICALTHREADS.
□Installspannerringontothenut.
□ Installonepullerscrewreleasetapestripintostud.(AppendixB2)
□Threadpullerscrewontothestud.
□InsertAllenwrenchintothebacksideofthestudtostopthestudfromrotatingwhen
installingthepullerscrew.
□UsinganAllenwrench,tightenthepullerscrew.Thenbackoffpullerscrew1/2aturn.
□Retightenpullerscrewbyhanduntilitisfullyinserted.DONOTBACKOFFPULLERSCREW.
□ Installretentionstudsintoadjacentstuds,bothsidesofthepullerscrew.
□ Installbacksideguardcoveringstudtobetensioned,andlightlythreadedintobacksideof
adjacentstuds.
□Slidefootoverthepullerscrewandorientateintoposition.
□Threadthetensionerontopullerscrew.Lightlyturnthetensionerontothepullerscrew
untilitstops.Thegapbetweenthefootandtensionerisabout1/16”to3/16”
□Placeguardovertensionerandpositionlocatingcutoutsontoretentionstuds.
□Tightenknurledinterlockfittingbyhanduntilitpressesfirmlyagainsttensioner(nogap).
Thiswillalsoseatretentionstudsintoguard’slocatingcutouts.
□Slideandengagecustomerconnectorfromrearofguardtolocktensionerintoplace.

Instruction Manual IM-255
For Gas Turbine Tensioned Studs & Nuts
CUSTOMER'SINFORMATIONBOX
CONTENTSAREINDEPENDENTOFRIVERHAWKDOCUMENTCONTROL

215ClintonRoad
NewHartford,NY13413
Tel:+13157684855
Fax:+13157684941
Email:[email protected]


REV
373A4038
GEDRAWINGNUMBER

RevisionC
Page9of41
□Tensionto50%.Consultmanualforcorrectpressure.
□Usethepinwrenchinthespannerringtotightennut.
□Releasepressureandallowthetensionertofullyretract.
□Disconnectthehosefromthetensioner.
□Loosentheknurledfittingandremovethesafetyguard.
□
Unscrewthetensionerfromthepullerscrew.Usecautiontoensurethathandsarenot
betweenthetensionerandthecouplingwhenthetensionerbecomesdisengagedfrom
thepullerscrew.
□Removethefootfrompullerscrew.
□Removethepullerscrewfromthestudandretentionstuds.
□Removethespannerringfromthenutandmovetothenextstudinthepattern.
□Tensionallstudsto50%beforeproceedingtofinalpressure.
□ Repeattheabovestepsatthefinalpressure.
□ Measurethefinalstudlengthandrecordonthestretchdatasheets.Calculatethestretch
andverifypersection9.2
□ Torquethenuts’setscrewspersection10
Detensioning(StudRemovalGASTURBINEEND)
□ Loosenthenuts’setscrews

Instruction Manual IM-255
For Gas Turbine Tensioned Studs & Nuts
CUSTOMER'SINFORMATIONBOX
CONTENTSAREINDEPENDENTOFRIVERHAWKDOCUMENTCONTROL

215ClintonRoad
NewHartford,NY13413
Tel:+13157684855
Fax:+13157684941
Email:[email protected]


REV
373A4038
GEDRAWINGNUMBER

RevisionC
Page10of41
□
Inspectandcleanstuds’conicalthreads.DonotcontinueuntilALLdebrisisremoved
fromthethreads!RefertoinstructionmanualIM‐220.Donottrytousethetensionerto
removeadamagedstud!
□Applyalightcoatofcleanturbineoilorspraylubricanttothepullerscrew.DONOTUSE
“NEVERSEIZE”ONTHECONICALTHREADS.
□Installthespannerringontothenut.
□Threadthepullerscrewontothestud.
□UsinganAllenwrench,tightenthepullerscrew.Thenbackoffthepullerscrew1/2aturn.
□Lightlyretightenthepullerscrewbyhanduntilitisfullyinserted.DONOTBACKOFFTHE
PULLERSCREW.
□Slidethefootoverthepullerscrewandorientateintoposition.
□Threadthetensionerontothepullerscrew.Lightlyturnthetensionerontothepuller
screwuntilitstops.Thegapbetweenthefootandtensionerisabout1/16”to3/16”.
□Placethesafetyguardoverthetensionerandpositiontheguidepinintotheholeinthe
backsideofthestud.
□Tightentheknurledinterlockfittingbyhanduntilitfirmlypressesagainstthetensioner.
(nogap).
□Slideandengagethecustomconnectorfromtherearofthesafetyguardtolockthe
tensionerintoplace.
□Applythefinalpressure.
□Loosenthenutwiththespannerringandpinwrench.
□Releasethehydraulicpressureandallowthetensionertofullyretract.
□Disconnectthehosefromthetensioner.

Instruction Manual IM-255
For Gas Turbine Tensioned Studs & Nuts
CUSTOMER'SINFORMATIONBOX
CONTENTSAREINDEPENDENTOFRIVERHAWKDOCUMENTCONTROL

215ClintonRoad
NewHartford,NY13413
Tel:+13157684855
Fax:+13157684941
Email:[email protected]


REV
373A4038
GEDRAWINGNUMBER

RevisionC
Page11of41
□Loosentheknurledfittingandremovethesafetyguard.
□Unscrewthetensionerfromthepullerscrew
□Removethefoot
□Removethepullerscrewfromthestud.ItmaybenecessarytoinsertandanAllenwrench
intothebacksideofthestudtoremovethepullerscrew.
□Removethespannerringfromthenut.
□Movetothenextstudinthepattern.
Detensioning(StudRemovalGENERATOREND)
□ Loosenthenuts’setscrews
□
Inspectandcleanstuds’conicalthreads.DonotcontinueuntilALLdebrisisremoved
fromthethreads!RefertoinstructionmanualIM‐220.Donottrytousethetensionerto
removeadamagedstud!
□Applyalightcoatofcleanturbineoilorspraylubricanttothepullerscrew.DONOTUSE
“NEVERSEIZE”ONTHECONICALTHREADS.
□Installthespannerringontothenut.
□Threadthepullerscrewontothestud.
□UsinganAllenwrench,tightenthepullerscrew.Thenbackoffthepullerscrew1/2aturn.
□Lightlyretightenthepullerscrewbyhanduntilitisfullyinserted.DONOTBACKOFFTHE
PULLERSCREW.
□Slidethefootoverthepullerscrewandorientateintoposition.

Instruction Manual IM-255
For Gas Turbine Tensioned Studs & Nuts
CUSTOMER'SINFORMATIONBOX
CONTENTSAREINDEPENDENTOFRIVERHAWKDOCUMENTCONTROL

215ClintonRoad
NewHartford,NY13413
Tel:+13157684855
Fax:+13157684941
Email:[email protected]


REV
373A4038
GEDRAWINGNUMBER

RevisionC
Page12of41
□ Installretentionstudsintoadjacentstudshandtight.
□ Installbacksideguardcoveringstudtobetensionedandlightlythreadedintobacksideof
adjacentstuds.
□Threadthetensionerontothepullerscrew.Lightlyturnthetensionerontothepuller
screwuntilitstops.Thegapbetweenthefootandtensionerisabout1/16”to3/16”.
□Placethesafetyguardoverthetensionerandpositionlocatingcutoutsontoretention
studs.
□Tightentheknurledinterlockfittingbyhanduntilitfirmlypressesagainstthetensioner.
(nogap).
□Slideandengagethecustomconnectorfromtherearofthesafetyguardtolockthe
tensionerintoplace.
□Applythefinalpressure.
□Loosenthenutwiththespannerringandpinwrench.
□Releasethehydraulicpressureandallowthetensionertofullyretract.
□Disconnectthehosefromthetensioner.
□Loosentheknurledfittingandremovethesafetyguard.
□
Unscrewthetensionerfromthepullerscrew.Usecautiontoensurethathandsarenot
betweenthetensionerandcouplingwhentensionerbecomesdisengagedfromthepuller
screw.
□Removethefoot.
□Removethepullerscrewfromthestud.ItmaybenecessarytoinsertandanAllenwrench
intothebacksideofthestudtoremovethepullerscrew.
□Removethespannerringfromthenut.

Instruction Manual IM-255
For Gas Turbine Tensioned Studs & Nuts
CUSTOMER'SINFORMATIONBOX
CONTENTSAREINDEPENDENTOFRIVERHAWKDOCUMENTCONTROL

215ClintonRoad
NewHartford,NY13413
Tel:+13157684855
Fax:+13157684941
Email:[email protected]


REV
373A4038
GEDRAWINGNUMBER

RevisionC
Page13of41
□Movetothenextstudinthepattern.


4.0GeneralPreparations

Readandunderstandallinstructionsbeforeinstallingandtensioningstuds

Thisequipmentproducesveryhighhydraulicpressuresandveryhighforces.Operatorsmust
exercisecaution,wearsafetyglassesandhardhatswhenusingthisequipment.

High‐pressurefluidfromtheHydraulicPressureKitsystempressurizesthetensionerwhich
generatesastretchingforcethatactuallystretchesthestud.Asthestudisstretchedthenutlifts
offtheflange.Thenutisthenreseatedintopositionontheflangebyturningspannerringwiththe
pinwrench.Whenthenutistightagainsttheflange,thepressureinthetensionerisreleased
leavingthestudloadedtoitspredeterminedvalue.

4.1MachinePreparation

Theflangetobetensionedmustbefullyclosedpriortopositioningofstudsintheflanges.Turning
theshaftsoftheturbineandthegeneratorarenotrequired,butmaybeuseful.Also,itwillbe
advantageoustoremoveasmanyobstructionsaspossiblefromtheflangearea,suchasspeed
probes,shippingplates,andconduit.

4.2Hardware–Balance

Hardwareissuppliedasweightbalancedsets.StudsandNutsareinterchangeablewithinaset.Do
notmixstudandnutsfrommultiplesets.

Savetheweightcertificationthatissuppliedwitheachset.Itwillbeneededforthepurchaseof
replacementhardware

4.3Tensioner–CareandHandling

Whennotinuse,thetensionershallbemaintainedinacleanenvironmentwithallcapsandplugs
forhydraulicopeningsandfittingsinplace.

UseISO32gradeoil.


Instruction Manual IM-255
For Gas Turbine Tensioned Studs & Nuts
CUSTOMER'SINFORMATIONBOX
CONTENTSAREINDEPENDENTOFRIVERHAWKDOCUMENTCONTROL

215ClintonRoad
NewHartford,NY13413
Tel:+13157684855
Fax:+13157684941
Email:[email protected]


REV
373A4038
GEDRAWINGNUMBER

RevisionC
Page14of41
Wheninuse,thetensionershallbeprotectedfromsandandgrit.

4.4HandTools

Severalhandwrenchesandmicrometersmayberequiredtoperforminstallationand
measurementofthestuds:

5/8”wrench
AsetofAllenWrenches
3’–4’BreakerBar
8”to9”micrometerorcaliper
9”to10”micrometerorcaliper

4.5SpecialTools

HydraulicTensionerKit: HT‐5494HydraulicTensioner
(BothSyngasGeneratorandTurbineFlanges)
(referenceGE269B8729)
 HT‐5194HydraulicTensioner
(SyngasGeneratorFlange)
(referenceGE269B8702)
 HT‐5222HydraulicTensioner
(GasTurbineFlange)
(referenceGE269B8697)

HydraulicPumpKit: AP‐0532Air‐OperatedHydraulicPump
(recommended)
(referenceGE359B2502)
 MP‐0130ManualHand‐Operated
HydraulicPump
(referenceGE359B2506)




Instruction Manual IM-255
For Gas Turbine Tensioned Studs & Nuts
CUSTOMER'SINFORMATIONBOX
CONTENTSAREINDEPENDENTOFRIVERHAWKDOCUMENTCONTROL

215ClintonRoad
NewHartford,NY13413
Tel:+13157684855
Fax:+13157684941
Email:[e-mail]


REV
373A4038
GEDRAWINGNUMBER

RevisionC
Page15of41
5.0PreparationofHardware

5.1NutPreparation













SamplePictureofaRiverhawkLocknut

Ifthereisanyvisibledamageonanut,donotusethenutandcontacttheRiverhawkCompanyfor
areplacementnut.Pleasebepreparedtosupplytheturbinenumber,weightcertification,and
digitalphotographsforevaluation.

5.1.1NutCleaning‐NewInstallations

Fornewinstallations,thenutsshouldcomesealedfromthefactoryandwillneednocleaning.

5.1.2NutCleaning‐OldInstallations

Previouslyinstallednutsrequirecleaningasfollows:
Wirebrushusingapetroleumbasedsolventtoremoveanyforeignmaterialontheexternal
surfacesandthreads.

5.2StudPreparation

Checkthestudforanyvisibledamage.Ifthereisanyvisibledamage,donotusethestudand
contacttheRiverhawkCompanyforareplacementstud.Pleasebepreparedtosupplytheturbine
number,weightcertification,anddigitalphotographsforevaluation.

Theconicalthreadsofeachstudmustbecleanbeforeinstallationorremoval.Thisensuresthe
properseatingofthepullerscrew.

Set Screw
1 of 2
Spanner
Ring Holes

Instruction Manual IM-255
For Gas Turbine Tensioned Studs & Nuts
CUSTOMER'SINFORMATIONBOX
CONTENTSAREINDEPENDENTOFRIVERHAWKDOCUMENTCONTROL

215ClintonRoad
NewHartford,NY13413
Tel:+13157684855
Fax:+13157684941
Email:[email protected]


REV
373A4038
GEDRAWINGNUMBER

RevisionC
Page16of41

5.2.1StudCleaning‐NewInstallations

Fornewinstallations,thestudsshouldcomesealedfromthefactoryandwillneednocleaning.

5.2.2StudCleaning‐OldInstallations

Previouslyinstalledstudswillrequirecleaning.Cleanconicalthreadsshouldhaveabrightand
shinyappearance.

Notice:
Failuretoproperlycleanthestudscouldresultinimpropermatingofthreads.Personalinjuryand
equipmentdamagecanoccurifthepullerscrewisnotsecurelyengagedwiththetaperedthread
ofthestud.

Ifcleaningisrequired,followthesesteps:

1. Blowoutthethreadswithcompressedairtoremoveloosedebrisanddryconicalthreads.
ReferenceinstructionmanualIM‐220formoredetailedinstructions.Donotapplyasolvent
orothercleaningsolutiontothethreadsasthismaychemicallyattackthestud.

2. UseStudCleaningKit,GT‐4253orasimilar1"diameterBrasspowerbrush.


PictureofBrassPowerBrush

3. Insertthebrushintoanelectricdrillandsetdrilltoruninacounterclockwisedirectionat
highspeed.

4. Workthedrillinacircularmotionwhilemovingthebrushinandouttocleanallofthe
threads.Trynottoholdthebrushinoneplacetoolong,soasnottoremovethestud's
protectivecoating.

5. Blowoutthethreadswithcompressedairtoremovelooseneddebris.

6. Visuallyinspectthreadsforcleanliness.Threadsshouldbebrightandshiny.

7. Repeatifanydirtcanbeseeninthethreads.

Instruction Manual IM-255
For Gas Turbine Tensioned Studs & Nuts
CUSTOMER'SINFORMATIONBOX
CONTENTSAREINDEPENDENTOFRIVERHAWKDOCUMENTCONTROL

215ClintonRoad
NewHartford,NY13413
Tel:+13157684855
Fax:+13157684941
Email:[email protected]


REV
373A4038
GEDRAWINGNUMBER

RevisionC
Page17of41

8. Inspectthreadsforanydamagethatmayhavebeencausedbypreviousinstallation.

Donotapplythreadlubricantstothethreads.

Finishthecleaningprocessbyrinsinginavolatilesolventsuchasacetoneandallowtodry.

5.3StudLengthMeasurement

MeasureandrecordtheinitiallengthsofthestudsonthesuppliedstretchdatasheetinAppendix
Cofthismanual.

Thefollowingrecommendationswillimproveyourresults.
 Plantostartandfinishanyflangeinthesameday.
 Studsandflangemustbeatthesametemperature.
 Keepthemeasuringinstrumentsoutofthesunlight.
 Numbereachstudwithamarkerforlaterstretchmeasurementtracking.
 Markthelocationofmeasurementonstudendwithapermanentmarker.
 Thesamepersonshouldmakeallmeasurements.
 Measureeachstudtonearest0.001inch(.01mm).
 Recordeachmeasurementonthestretchrecordsheetsinthismanual'sappendix.


6.0StudandNutAssembly

RefertoHardwareSetPartNumberdrawinglistedinSection2.0ofthismanual.Ifyoudon’thave
ahardwaresetdrawing,itcanbefoundintheGEdrawingsystemorcontactRiverhawkCompany.

Assemblethenuttotheconicaltensioningthreadend(frontside)ofthestud.

SlidetheassemblyintotheflangefromthecouplingsideasshowninFigures1&2theninstallthe
othernutonthebackside.

Ensurethatbackside’snutorientationiscorrectwiththreadlockingscrewsfacingoutwardofthe
flange.

ThenutsarethesameontheTurbineend(2.25”).


Instruction Manual IM-255
For Gas Turbine Tensioned Studs & Nuts
CUSTOMER'SINFORMATIONBOX
CONTENTSAREINDEPENDENTOFRIVERHAWKDOCUMENTCONTROL

215ClintonRoad
NewHartford,NY13413
Tel:+13157684855
Fax:+13157684941
Email:[email protected]


REV
373A4038
GEDRAWINGNUMBER

RevisionC
Page18of41

Figure1–CutawayViewofTurbineFlange
andCouplingFlangeBoltedJoint

ThenutsaredifferentontheGeneratorend(2.75”);theshorternutgoesonthebacksideorthe
sideclosesttotheGenerator.


Instruction Manual IM-255
For Gas Turbine Tensioned Studs & Nuts
CUSTOMER'SINFORMATIONBOX
CONTENTSAREINDEPENDENTOFRIVERHAWKDOCUMENTCONTROL

215ClintonRoad
NewHartford,NY13413
Tel:+13157684855
Fax:+13157684941
Email:[email protected]


REV
373A4038
GEDRAWINGNUMBER

RevisionC
Page19of41
Figure2–CutawayViewofGeneratorFlange
andCouplingFlangeBoltedJoint

Adjustthefrontsidestud/nutassemblysothatthestudsticksoutfromthefaceofthenutthe
amountshownonthehardwaresetdrawing.Ifyoudon’thaveahardwaresetdrawing,itcanbe
foundintheGEdrawingsystemorcontactRiverhawkCompany.(Seesection2)

SETTINGTHESTICK‐OUTLENGTHISCRITICALFORTHEHYDRAULICTENSIONERTO
WORKCORRECTLY.THESTICK‐OUTLENGTHISALWAYSSETFROMTHECOUPLING
SIDEOFTHEFLANGE.
Thestick‐outlengthcanbecheckedthreedifferentways.
