Caterpillar HEUI Actuator Pump Disassembly Fixture Kit - Tswj Decompression System Rau High-Pressure Roj Pump Rebuild

Caterpillar HEUI actuator twj tso kua mis- feem ntau hu ua "intensifier twj" los yog "high-pressure oil pump" (HPOP)- tsis yog ib feem uas koj disassemble nrog pullers tsim rau gearboxes. Nyob rau hauv nws lub cylindrical vaj tse nyob ib lub caij nplooj ntoos hlav ua ntej loaded exerting tshaj 1,800 N ntawm lub zog tiv thaiv lub piston los ua ke, nrog rau ib tug precision-av swashplate uas yuav tsum tau kiag li perpendicular extraction kom tsis txhob muaj qhab nia. Ib qho kev tso tawm uas tsis muaj peev xwm tuaj yeem xa cov lus qhia plunger ya, ua rau lub bore lub micro-finished nto (Rz Tsawg dua los yog sib npaug li 0.8 μm), los yog chim siab rau qhov tseem ceeb ntawm kev sib tw ntawm lub tsav ncej thiab cov kabmob tawb. Peb cov khoom siv disassembly hloov improvisation nrog cov txheej txheem kev coj ua, theem-tswj decompression- siv lub tes tsho threaded compression uas maj mam txo lub caij nplooj ntoos hlav nro, ua raws li cov kabmob sib cais uas txhawb nqa pawg rotor yam tsis muaj wedging lossis prying. Qhov no tsis yog ib qho generic gear puller; Nws yog lub hom phiaj-engineered cradle uas tsom iav lub twj tso kua mis lub hauv paus sib dhos nyob rau hauv rov qab, xyuas kom meej tias txhua txhua shim, washer, thiab piston nplhaib tshwm nyob rau hauv tib yam mob nws nkag.

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Cov kauj ruam txaus ntshai tshaj plaws hauv lub twj tso kua mis actuator disassembly yog tso lub ntsiab lub caij nplooj ntoos hlav pob, uas yog ntes ntawm lub tsev nyob sab sauv thiab lub piston thrust phaj. Peb cov khoom siv ua haujlwm hnyav ua haujlwm compression dab tshos uas txuas mus rau lub twj tso kua mis M52 × 1.5 xov sab saum toj. Raws li koj tig lub forcing ntsia hlau (nyob rau 2,500 N muaj peev xwm), lub dab tshos maj mam compresses lub caij nplooj ntoos hlav pawg, tso cai rau koj tshem tawm lub nplhaib snap tuav tsis muaj lub zog khaws cia. Qhov taw qhia kev mob stroke built-in qhia tau hais tias compression taug kev hauv 0.5 mm increments -kom koj tsis txhob over-compress, uas tuaj yeem khi cov lus qhia piston. Thaum lub nplhaib snap raug tshem tawm, lub forcing ntsia hlau yog thim rov qab hauv kev tswj ¼-tig cov kauj ruam, thiab lub caij nplooj ntoos hlav nthuav maj mam tawm tsam lub dab tshos sab hauv. Cov txheej txheem decompression no tshem tawm qhov "ping" kev phom sij uas muaj kev cuam tshuam rau hammers, thiab nws khaws lub caij nplooj ntoos hlav qhov ntev ntev (lub Hoobkas kam rau ua: 64.0 ± 0.5 hli) rau qhov tseeb reassembly. Cov khoom siv kuj suav nrog lub nplhaib snap kis nrog cov lus qhia offset, tshwj xeeb tshaj yog zoo li zoo li HEUI twj tso kua mis sab hauv tuav lub nplhaib tsis muaj slipping.

Tom qab tshem tawm lub caij nplooj ntoos hlav, pawg rotor - muaj xws li lub swashplate, thrust bearing, thiab xya piston sib dhos-tseem zaum ntawm tus tsav ncej taper. Generic pullers uas tuav lub rotor txheej txoj kab uas hla feem ntau distort lub bearing tawb los yog tawm burrs ntawm lub swashplate polished nto. Peb cov khoom siv nta ob-thooj bearing separator phaj uas bolts mus rau lub rotor lub M8 tapped qhov uas twb muaj lawm (siv cov suav nrog hardened screws). Lub hauv paus forcing ntsia hlau ces siv ib tug zoo kawg nkaus axial rub, tso lub taper haum yam tsis muaj sab loading. Lub separator phaj lub puab bore yog relieved kom tshem tau cov ncej roj pub lub qhov, tiv thaiv kev puas tsuaj rau lub ncej sealing nto. Lub zog rub tawm yog ntsuas los ntawm kev sib koom ua ke ntawm lub xov tooj ntawm tes (tso tawm ntawm kev nyeem ntawv digital) - kev noj qab haus huv taper haum tso tawm ntawm 1,200-1,500 N; ib tug quab yuam tshaj 1,800 N qhia tias galling, prompting tshuaj xyuas ua ntej yuam rho tawm. Cov ntaub ntawv no yog qhov tshwj xeeb rau peb qhov kev sib tw thiab muab lub hom phiaj ntsuas ntawm taper mob.

Lub xya pistons (los yog plungers) nyob rau hauv pawg rotor yog khaws cia los ntawm kev tuav lub nplhaib thiab ua haujlwm nrog kev tshem tawm tsuas yog 0.015-0.035 hli txheeb ze rau lawv lub tog raj kheej bores. Peb cov khoom siv muab lub tes tsho rho tawm ib tus neeg rau txhua lub piston- cov raj nyias nyias uas hla lub taub hau piston thiab koom nrog cov xov rub tawm, kos lub piston ncaj qha tawm ntawm nws qhov bore yam tsis muaj tilting. Ib txheej ntawm cov ntawv qhia cov pins (xim-coded rau txhua lub tog raj kheej txoj haujlwm) pab rov ntxig lub pistons thaum lub sij hawm sib dhos, tiv thaiv kev sib tsoo ntawm lub nplhaib tuav. Cov khoom siv kuj suav nrog lub ntsuas qhov ntsuas qhov ntsuas qhov ntsuas uas txuas mus rau tus qauv dial bore gauge, tso cai ntsuas lub tog raj kheej bore ovality (max tso cai 0.005 hli) yam tsis tau tshem lub rotor vaj tse los ntawm lub fixture. Qhov adapter no yog qhov tseem ceeb rau kev txheeb xyuas qhov hnav hauv cov roj twj tso kua mis siab, uas cuam tshuam ncaj qha rau kev txhaj tshuaj actuation siab stability.

Cov khoom siv fixture muaj xws li laminated siv daim npav teev cov kev txwv tsis pub hnav tseem ceeb:

Swashplate thrust lub ntsej muag- Cov kauj ruam siab tshaj plaws: 0.025 hli ( ntsuas nrog qhov tob micrometer txuas).

Piston tiab diam- yam tsawg kawg nkaus 14.985 mm (thawj 15.000 mm).

Caij nplooj ntoos hlav dawb ntev- pov tseg hauv qab 63.0 mm.

Drive ncej journal- Qhov siab tshaj plaws ovality: 0.004 mm.

Cov kev txwv no tau muab los ntawm Caterpillar's REHS1845 cov ntawv xov xwm pabcuam thiab raug kuaj xyuas los ntawm peb cov ntaub ntawv sab hauv ntawm ntau dua 500 lub twj tso kua mis rov tsim dua. Lub fixture tus qauv tsim kuj tso cai rau kev txuas ntawm ib qho kev xaiv hydraulic siab ntsuas adapter los xyuas qhov sib dhos twj tso kua mis tso zis siab (2,000-3,000 psi) ua ntej kev teeb tsa, tig lub disassembly fixture rau hauv ib qho chaw rov tsim kho.

Q1: Kuv lub pob lub caij nplooj ntoos hlav zoo li daig txawm tias tom qab siv lub dab tshos compression - dab tsi tuaj yeem ua yuam kev?
A: Qhov no feem ntau qhia tau hais tias lub nplhaib tuav sab hauv tsis tau zaum hauv nws qhov zawj, lossis tias phau ntawv qhia piston tau dhau los ua rau qhov kev puas tsuaj yav dhau los. Tsis txhob yuam cov ntsia hlau compression tshaj li 8.5 hli stroke txwv. Hloov chaw, maj mam coj mus rhaub lub twj tso kua mis vaj tse nrog lub ntsej muag muag rauj thaum tuav lub teeb compression -qhov no feem ntau tso tawm cov lus qhia tsis raug. Yog tias tseem daig, tshuaj xyuas lub nplhaib snap rau burrs siv peb cov ntawv txuas nrog borescope (yeem).

Q2: Kuv tuaj yeem qhia tau li cas yog tias lub swashplate thrust bearing xav tau kev hloov pauv?
A: Tig cov kabmob sab nraud ntawm tes tom qab rho tawm. Yog tias koj hnov ​​​​qhov tsis txaus ntseeg lossis hnov ​​lub suab sib tsoo, hloov nws. Peb cov khoom siv suav nrog dial taw qhia adapter los ntsuas axial ua si; ib qho kev ua si tshaj 0.08 hli qhia tias hnav cov kabmob nto. Tsis tas li, tshawb xyuas lub tawb nqa khoom kom tsis muaj xim -xiav lossis xim av qhia tias muaj cua sov los ntawm cov roj ntsha tsis txaus.

Q3: Lub rotor taper tso tawm ntawm 1,700 N - puas yog?
A: 1,700 N yog qhov siab tshaj qhov ntau yam tab sis tsis yog qhov tseem ceeb yog tias phau ntawv xov xwm ncej qhia tsis tau qhab nia. Txawm li cas los xij, koj yuav tsum tau tshuaj xyuas lub taper bore rau galling siv tus suav nrog magnifying comparator. Txhua qhov pom khawb txhais tau hais tias taper haum tau fretted; lap lub bore thiab ncej nrog zoo lapping compound (tsis muab) kom txog thaum lub zog tso tawm poob qis dua 1,500 N.

Q4: Cov khoom siv no puas tuaj yeem tswj tau cov twj tshiab C-11 thiab C-13 HEUI?
A: C-11 thiab C-13 siv M60 xov loj dua thiab sib txawv rotor txoj kab uas hla. Peb cov khoom siv tshwj xeeb rau cov tsev neeg C-7, C-9, thiab 3126. Rau cov twj tso kua mis loj, peb muab cov khoom sib cais (muag nyias) uas hloov lub tsho compression thiab bearing separator daim hlau.

Q5: Dab tsi yog qhov yuam kev tshaj plaws thaum rov sib dhos lub twj tso kua mis nrog cov khoom siv no?
A: Tshaj-tightening lub caij nplooj ntoos hlav compression dab tshos thaum lub sij hawm reassembly, uas yuav compress lub caij nplooj ntoos hlav tshaj nws elastic txwv. Yuav tsum ua raws li cov txheej txheem thim rov qab: nruab lub caij nplooj ntoos hlav, xov lub dab tshos kom txog thaum lub nplhaib snap khawm pom, nruab lub nplhaib snap, ces maj mam tso lub dab tshos. Tsis txhob tig lub forcing screw ntau tshaj qhov tsim nyog los nthuav tawm qhov zawj.

Q6: Kuv puas yuav tsum tau hloov tag nrho xya lub piston sib dhos tom qab ib zaug rov tsim dua?
A: Tsis tas li. Tshawb xyuas txhua lub piston thiab nws qhov sib thooj bore siv peb qhov ntsuas qhov ntsuas qhov ntsuas qhov ntsuas. Yog tias tag nrho cov pistons ntsuas siab tshaj 14.985 hli thiab cov bores tsis pom taper, koj tuaj yeem rov siv tau. Txawm li cas los xij, ib txwm hloov lub piston tuav lub nplhaib - lawv siv ib leeg thiab tuaj yeem tawg thaum rov nruab. Peb suav nrog tag nrho cov txheej txheem ntawm Viton O-rings thiab cov nplhaib thaub qab rau lub twj tso kua mis hauv cov khoom siv deluxe.

 

Txhawm rau ua kom koj qhov kev yuav khoom tau yooj yim thiab yooj yim, peb muab ntau yam kev xaiv them nyiaj ruaj ntseg:

Peb nyob ntawm no los ua kom koj cov txheej txheem xaj kev txhawj xeeb-dawb - xaiv txoj kev them nyiaj uas ua haujlwm zoo tshaj rau koj!

 

 

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