Bosch CP4 High-Pressure Pump Service Master Kit — Ua kom tiav Rebuild Solution Rau CP4.1 / CP4.2 Common Rail Pumps

Bosch CP4.1 thiab CP4.2 twj tso kua mis yog lub plawv ntawm niaj hnub no -rail systems pom nyob rau hauv Ford Powerstroke 6.7L, GM Duramax L5P, RAM Cummins, thiab ntau European diesel platforms. Lawv sab hauv architecture - ib qho siab - siab plunger uas tau tsav los ntawm lub cam eccentric nrog rau cov neeg ua raws - yog compact tab sis unforgiving. Thaum cov menyuam bearing tsis ua haujlwm lossis lub plunger scuffs, cov khoom siv hlau ua haujlwm ncaj qha mus rau cov tshuaj txhaj tshuaj, feem ntau ua rau lawv puas tsuaj. Hloov tag nrho lub twj tso kua mis yog ib qho kev xaiv, tab sis ntawm $ 2,000 - $ 3,500 ib chav tsev, ntau lub nkoj thiab cov khw ywj pheej nyiam qhov kev tswj xyuas dua. Cov khoom siv tswv yim no ua rau muaj tseeb tias: astructured, ntaub ntawv rov tsim duantawm CP4 lub twj tso kua mis siv OEM- qib hloov cov khoom siv, cov cuab yeej tshwj xeeb rho tawm, thiab qhov ntsuas qhov ntsuas qhov tseeb - tag nrho hauv ib qho ua npuas ncauj - rooj plaub. Cov khoom siv npog ob qho tib si CP4.1 (2-piston) thiab CP4.2 (2-piston nrog hloov kho cam profile) txawv, hais txog lub hauv paus ua rau tsis ua hauj lwm es tsis yog qhov sib pauv.

Qhov no tsis yog generic seal kit. Nws yog ib qho tiavmechanical restoration systemuas suav nrog cov cuab yeej kom nyab xeeb tshem tawm lub plunger ntes, nias- haum cov kabmob tshiab, teeb lub plunger- rau- cam tshem tawm, thiab rov ua lub twj tso kua mis rau lub Hoobkas kam rau ua. Raws li ntau tshaj 200 rebuilds sau nyob rau hauv Teb Chaws Asmeskas thiab European kev cob qhia, cov khoom siv tas li rov ua kom cov twj tso kua mis tso rau hauv 98% ntawm qhov tshiab -spec kev ua tau zoo ntawm 1,800 bar rail siab, nrog lub sijhawm nruab nrab ntawm kev kho dua tshiab tshaj 150,000 km - piv rau OEM pauv units.

Plunger / bore clearance (tshiab spec):0.025-0.040 hli. Tom qab 200,000 km, qhov clearance feem ntau nce mus rau 0.065 - 0.090 mm, ua rau sab hauv to. Cov khoom siv qhov ntsuas ntsuas tso cai rau koj ntsuas qhov kev tshem tawm tom qab txhim kho lub plunger tshiab siv lub ntsuas ntsuas ntsuas (nrog) txhawm rau txheeb xyuas nws poob hauv OEM ntau.

Cam follower roller hnav txwv:Yog hais tias cov menyuam txoj kab uas hla tau txo los ntawm qhov qub 18.00 hli mus rau hauv qab 17.92 hli, hloov yog yuav tsum tau. Cov khoom siv suav nrog cov cuab yeej sib piv rau cov menyuam rau qhov ntsuas no.

Rail siab rov qab:Hauv kev sim ntawm 18 lub twj tso kua mis rov ua dua nrog cov khoom siv no (ntau yam CP4.2 sib txawv los ntawm Ford 6.7L), rail siab ntawm idle rov qab mus rau 280 - 300 bar (OEM spec) nyob rau hauv txhua rooj plaub, nrog lub siab ripple txo los ntawm 62% piv rau ua ntej -rebuild readings.

Lub sij hawm rau rebuild:Cov kws tshaj lij tau ua tiav qhov kev tshem tawm tag nrho, tu, ntsuas, rov ua dua, thiab kuaj cov pa hauv qhov nruab nrab ntawm 3 teev 15 feeb - piv rau 6+ teev thaum siv cov cuab yeej improvised thiab cov ntsaws ruaj ruaj.

Cov khoom siv lub hau npog muaj cov laminatedQR codeuas txuas mus rau 12-feeb kauj ruam-ib-kauj ruam video qhia (muaj lus Askiv, Mev, thiab German). Cov txheej txheem ua raws li qhov laj thawj no:

Pump stripping- tshem tawm lub siab tswj valve, metering unit, thiab siab - siab qhov hluav taws xob fittings siv cov hex sockets.

Plunger extraction- mount lub hydraulic xovxwm ntawm lub twj tso kua mis rear flange, thawb lub plunger tawm ntawm compression sab. Lub mandrel lub xub pwg kom lub plunger tawm ncaj, tsis cocked.

Cov menyuam tshem tawm- ntxig rau qhov nthuav dav collet, koom nrog tus swb rauj, thiab rub cov menyuam thiab lub tawb sib dhos tawm. Yog tias cov menyuam raug ntes, lub collet tuaj yeem raug kaw nrog kev ua haujlwm ua haujlwm kom tawg cov ntawv cog lus corrosion.

Kev tshuaj xyuas vaj tse- siv lub iav magnifying thiab bore swab los xyuas lub plunger bore kom tau qhab nia. Yog hais tias lub bore muaj khawb tob, lub twj tso kua mis vaj tse yuav tsis rov tsim dua - cov khoom siv suav nrog lub ntsuas qhov ntsuas los txiav txim qhov no.

Tshiab tivthaiv installation- nias lub cam tshiab rau ntawm lub cam journal (siv lub installer), ces cov menyuam tshiab rau hauv lub tappet bore, ua raws li los ntawm DLC -coated plunger.

Kev teeb tsa clearance- siv lub dial stand los teeb lub plunger protrusion, shimming nrog cov kev hloov kho washers yog xav tau.

Sealing thiab kawg torque- nruab tag nrho cov ntsaws ruaj ruaj tshiab uas siv cov ntxig mandrels; torque vaj tse bolts rau 25 Nm siv lub plam -clutch adapter.

Txhua lub twj tso kua mis rebuilt yuav tsum dhau qhov yooj yimtes-kev ntsuas kev sib hloov: tom qab sib dhos, manually tig lub twj tso kua mis tsav flange - qhov kev tiv thaiv yuav tsum du thiab zoo ib yam, tsis muaj qhov nruj. Cov khoom siv suav nrog flange tig torque gauge (lub caij nplooj ntoos hlav- nplai txuas) uas ntsuas qhov tawg torque; Specification yog 0.8-1.2 Nm. Yog tias nws tshaj 1.5 Nm, cov kabmob preload siab dhau lawm, thiab cov shim yuav tsum tau kho.

Viton® siab- lub foob foob tau teeb tsa siv lub siab sizing tuag uas nthuav nws mus rau qhov tseeb sab nraud ntawm lub plunger, tiv thaiv pinching thaum lub sij hawm ntxig - ib qho tsis ua hauj lwm taw tes nrog generic foob installers.

❓ Q1: Cov khoom siv no puas tuaj yeem siv los tsim kho CP4 lub twj tso kua mis uas tau raug kev puas tsuaj loj nrog cov menyuam tawg tawg hauv lub tsev?
Yog hais tias lub tsev yog tawg los yog lub bore tau qhab nia siab, peb pom zoo kom hloov lub twj tso kua mis. Txawm li cas los xij, cov khoom siv cov cuab yeej rho tawm yog tsim los tshem tawm cov khoom seem ntev npaum li lub bore nws tus kheej tseem tsis zoo. Tshawb xyuas lub bore nrog lub ntsuas ntsuas - yog hais tias lub bore txoj kab uas hla tshaj 12.02 mm (CP4.1) los yog 12.50 mm (CP4.2) ntawm ib qho chaw, lub tsev yuav tsum tau muab pov tseg.

❓ Q2: Cov khoom siv suav nrog DLC-coated plunger - qhov no puas yog qhov hloov kho dua tshiab ntawm OEM uncoated version?
Yog lawm, DLC (pob zeb diamond-zoo li carbon) txo kev sib txhuam los ntawm kwv yees li 30% thiab ua rau lub neej ntev dua. Ntau qhov kev ua tsis tiav CP4 yog txuas rau scuffing ntawm lub plunger tsis muaj coated; lub coated version yog kev hloov kho ncaj qha. Nws ua tau raws li Bosch cov khoom siv tshiab tshaj plaws rau CP4.2+ twj.

❓ Q3: Kuv puas xav tau lub rooj zaum xovxwm lossis hydraulic xovxwm rau kev teeb tsa cov kabmob, lossis kuv puas tuaj yeem siv cov cuab yeej siv tes?
Cov tes suav nrog- ua haujlwm xovxwm (max 2 tons) yog txaus rau lub plunger extraction thiab bearing installation. Txawm li cas los xij, lub cam bearing installer yog tsim los siv nrog lub rooj ntev zaum tus qauv - tsis yog hydraulic xovxwm. Yog tias koj muaj lwm tus, koj tuaj yeem ua qhov kev tsim kho tag nrho yam tsis muaj khoom siv sab nraud.

❓ Q4: Kuv yuav paub li cas yog tias lub twj tso kua mis lub cam lobe nws tus kheej hnav - yog ib feem ntawm cov khoom siv?
Lub cam lobe yog ib feem ntawm lub twj tso kua mis tsav ncej, tsis suav nrog hauv cov khoom siv. Hnav ntawm lub lobe tsis tshua muaj tshwj tsis yog tias lub twj tso kua mis tau khiav nrog cov roj paug hnyav. Koj tuaj yeem tshawb xyuas lub lobe lub nqa siv lub dial taw qhia hauv cov khoom siv; Yog hais tias lub nqa yog qis dua 7.80 hli (CP4.1) los yog 8.20 hli (CP4.2), lub twj tso kua mis tsis rov tsim dua - qhov no qhia tau hais tias cam lobe hnav dhau 0.15 hli.

❓ Q5: Puas yog cov ntsaws ruaj ruaj hauv cov khoom siv no siv tau nrog biodiesel (B20) lossis siab - roj sulfur?
Yog - tag nrho cov elastomers hauv cov khoom siv tau ntsuas rau B20 thiab cov roj diesel txog li 500 ppm sulfur. Viton® siab - lub siab foob yog tsim tshwj xeeb rau kev ua phem ntawm cov tshuaj biodiesel niaj hnub.

❓ Q6: Yuav ua li cas yog tias kuv puas lub tsev lub siab valve lub rooj zaum thaum lub sij hawm disassembly - cov khoom siv hais qhov no?
Cov khoom siv suav nrog cov cuab yeej lapping rau lub rooj zaum siab valve (ib qho mandrel cais nrog lapping paste). Yog tias lub rooj zaum tau qhab nia me ntsis, koj tuaj yeem lap nws rov qab sealing. Yog tias qhov kev puas tsuaj tob dua 0.05 hli, lub valve lub cev xav tau kev hloov pauv (peb muab nws cais).

 

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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