Pofuna kuthana ndi vuto lapang'onopang'ono la makina ofukula a Komatsu PC60-8, kuthetsa mavuto kuyenera kuchitidwa motsatira ndondomeko ya “Quick Pre-spection → Engine → Pilot/Hydraulic Main System → PC-EPC Solenoid Valve/Pump Control → Valve Yogawira/Vavu Yothandizira/ECUr Relief”. Malo olakwika ayenera kutsimikiziridwa pophatikiza miyeso yeniyeni ya kuthamanga, panopa, ndi kayendedwe ka deta. M'munsimu muli masitepe atsatanetsatane, otheka kuchitapo kanthu komanso mikhalidwe yokhazikika.
- Chitetezo ndi Kuyang'anitsitsa Mwachangu (Chotsani Zinthu Zoyambira mu 5 Mphindis)
Zokhudza Chitetezo
Imitsani injini → Kutulutsa mphamvu mugawo lalikulu/woyendetsa ndege → Chotsani cholumikizira → Ikani cholumikizira chotsekera kuti mupewe kuyambitsa mwangozi panthawi yokonza.
Kuyang'ana Kwambiri
Mawonekedwe ndi Ntchito: Tsimikizirani kuti chofukula chili mu mphamvu ya P kapena H yokhala ndi throttle yokhazikika, ndikuchotsa zosintha zolakwika monga njira yachuma kapena malire othamanga.
Mafuta a Hydraulic: Onetsetsani kuti mulingo wamafuta uli pakatikati pa dipstick, kutentha kwamafuta kuli pakati pa 45-55 ℃ (preheat injini yozizira poyamba), mafuta amamveka popanda thovu kapena tinthu tachitsulo, ndipo palibe alamu yotseka. Ngati vuto lililonse silinakwaniritsidwe, sinthani mafutawo ndikusefa kaye.
Kutayikira ndi Kulumikizana: Yang'anani kutuluka kwakunja mu mpope waukulu, valavu yayikulu, mapaipi amafuta, ndi zolumikizira. Maboliti otayirira kapena ma clamp angayambitse kupsinjika.
Ma Wiring Harness and Connectors: Onetsetsani kuti zolumikizira za ECU, PC-EPC solenoid valve, sensor speed, etc., zilibe kumasuka, kulowetsa madzi, ndi oxidation, komanso kuti ma terminals ndi ophwanyidwa bwino.
- Kuyang'ana M'mbali mwa Injini (Chotsani Mavuto a Gwero la Mphamvu)
| Ntchito Yoyendera | Mtengo Wokhazikika | Njira Yoyendera | Kuchita Zolakwa ndi Kusamalira |
| Liwiro Liwiro | 2200±50rpm (kuthamanga kwambiri) | Werengani ndi tachometer kapena chida chowunikira | Liwiro losakwanira → Yang'anani ndodo/motor yokoka, kuthamanga kwamafuta, majekeseni amafuta, ndi kusanja kamphepo kamagetsi ka EFC |
| Kuthamanga kwa Mafuta | Kuthamanga kwa njanji wamba ≥30MPa (liwiro lopanda ntchito) / ≥140MPa (katundu wolemera) | Yezerani kumapeto kwa njanji ndi chopimitsira | Kuthamanga kochepa → Bwezerani chinthu chosefera, yang'anani mphuno zamafuta, ndikuwongolera mpope wa jakisoni wamafuta |
| Kuthamanga Kwambiri | Kusinthasintha kwa katundu ≤50rpm | Werengani kuchuluka kwa data ndi chida chowunikira | Kusinthasintha kwakukulu → Yang'anani sensor liwiro, kutayikira kwamafuta, ndi malingaliro owongolera a ECU |
| Kufananiza Mphamvu | Palibe kuyimitsidwa kwa injini / kuthamanga (mkati mwa ± 50rpm) | Yang'anani kuthamanga panthawi yamagulu | Kuyima kwa injini → Yang'anani mphamvu yofananira pakati pa mpope wamkulu ndi injini, ndikuwongolera valavu ya solenoid ya PC-EPC |
- Kuyang'ana kwa Makina Oyendetsa (Kuthamanga Kosakwanira Koyendetsa Ndiko Kumayambitsa Kuthamanga Kwapang'onopang'ono kwa Makina)
Pressure Measurement Point: Pampu yoyendetsa ndege kapena doko loyesa kuthamanga kwa valavu yayikulu.
Mtengo Wokhazikika: 3.3±0.2MPa (33±2kgf/cm²) pa liwiro lopanda ntchito komanso kuthamanga kwambiri.
Njira Zogwirira Ntchito
Yezerani kuthamanga pamene makina akugwira ntchito popanda kugwira ntchito. Ngati kupanikizika kuli kochepa kuposa 3.1MPa, sinthani valavu yochepetsera oyendetsa ndege (mangirirani nati molunjika kuti muwonjezere kupanikizika, 1/4 kutembenuka nthawi iliyonse).
Ngati kuthamanga sikungasinthidwe kapena kusinthasintha kwambiri → Phatikizani valavu yochepetsera kuthamanga, yang'anani kutsekeka kwa ma valve, kuvala kwa poppet, ndi kutopa kwa masika, kenaka yeretsani kapena sinthani ma valve.
Ngati kupanikizika sikunasinthe pamene chowongolera chikugwiritsidwa ntchito → Yang'anani kuti mafuta oyendetsa galimoto atsekeka kapena kutuluka mkati mwa valve yolamulira, kenaka yesaninso pambuyo pokonza.
- Hydraulic Main System Pressure and Flow Inspection (Core Performance Layer)
Kupanikizika Kwapampu Kwakukulu (Kukhazikitsidwa ndi Vavu Yothandizira Yothandizira)
Pressure Measurement Point: P1/P2 madoko oyeserera a pompu yayikulu; kuyesa pazipita throttle ndi kukanikiza anamanga kuti mpumulo (mwachitsanzo, pogwira ndodo chidebe pamalo retracted).
Mtengo Wokhazikika: 34.3±0.5MPa (343±5kgf/cm²).
Kugwira Mosazolowereka: Kuthamanga kwapang'onopang'ono → Sulani valavu yayikulu yothandizira, yang'anani ngati valavu ikugwedezeka / kuvala ndi kuwonongeka kwa chisindikizo, kenaka yeretsani kapena kusintha valavuyo; Ngati kupanikizika kuli koyenera koma makinawo akadali pang'onopang'ono → Yang'anani kutuluka kwa mpope waukulu ndi kuwongolera kwa PC-EPC.
Main Pump Flow (Yosinthidwa ndi PC-EPC Solenoid Valve ndi Valve ya PC)
Standard Logic: PC-EPC linanena bungwe kuthamanga ndi 3.5-4.5MPa pamene idling popanda ntchito; Kupanikizika kumatsika mpaka ziro ndipo pano ndi 160-260mA pazikomo kwambiri popanda kugwira ntchito.
Njira Yoyendera:
Werengani PC-EPC yamakono ndi chida chodziwira matenda: 850-1000mA pa liwiro lachabechabe, 160-260mA pamtunda waukulu. Ngati zachilendo, yang'anani valavu ya solenoid ndi ECU.
Yezerani kuthamanga kwa PC-EPC: Kupanikizika kuyenera kufanana ndi komweku. Ngati kupanikizika sikuli kwabwinobwino → Phatikizani ndikuyang'ana valavu ya solenoid ngati valavu ikuphwanyidwa kapena kutenthedwa kwa koyilo, kenaka iyeretseni kapena kuyisintha.
Mayendedwe Oyenda: Yezerani pampu yayikulu yotulutsa ndi mita yoyenda. Kuthamanga kwapakati ndi pafupifupi 120L / min (pampu yamapasa). Ngati kuyenda kuli kochepa → Yang'anani njira yosinthira ndi kutayikira kwa LS.
- Kuyang'ana Mozama kwa PC-EPC Solenoid Valve ndi Pump Control System (Electronic Control Core)
PC-EPC Solenoid Valve (Chigawo Chachikulu Choyang'anira Kusamuka Kwa Pampu Yaikulu)
Kukaniza Kukana Popanda Mphamvu: Kukana kwa coil ndi 10-15Ω. Bwezerani valavu ngati dera lotseguka kapena dera lalifupi lapezeka.
Mayeso a Mphamvu: Kuthamanga kwa mphamvu ndi 3.5-4.5MPa pamene idling popanda ntchito; kupanikizika kumatsika mpaka ziro pamlingo waukulu kwambiri popanda kugwira ntchito. Ngati sichoncho, valavu yapakati ndi yodzaza / yatha ndipo ikufunika kuyeretsedwa kapena kusinthidwa.
Kuyesa Ntchito: Chotsani cholumikizira cha PC-EPC. Ngati palibe kusintha kwa ntchito → Valavu ya solenoid ndi yolakwika ndipo iyenera kusinthidwa.
Main Pump Variable Mechanism (Vavu ya PC/LS Vavu)
Yang'anani pachimake cha valve ya PC kuti mutseke / kuvala ndikuwonetsetsa kuti kasupe ali ndi kukhazikika bwino; apo ayi, kuyenda sikungasinthidwe bwino.
Kwa valavu ya LS bypass: Onetsetsani kuti mphete yosindikizira sinawonongeke ndipo valavu yotsekera imatseka mwamphamvu kuti LS ichotse kuthamanga komwe kungayambitse kulephera kuyendetsa bwino.
- Kuyang'ana kwa Vavu Yogawa ndi Gulu Lothandizira (Chotsani Kutayikira Kwamkati / Kutsitsa)
Main Valve Core: Sulani ndikuyang'ana zida za boom / ndowa / ma valve opindika kuti aziwombera / scuffing; onetsetsani kuti chilolezo ndi ≤0.05mm. Pogaya kapena kusintha pakati pa valve ngati kuli kofunikira.
Kutsitsa Vavu: Onetsetsani kuti valavu yotsekera imatseka mwamphamvu ndipo mphete yosindikizirayo sinawonongeke kuti mafuta azitha kuyenda molunjika ku thanki, zomwe zingayambitse kulephera kumanga.
LS Bypass Valve: Yesani kuthamanga kwa LS (≥2MPa panthawi yogwira ntchito). Ngati kuthamanga kuli kochepa → Yang'anani valavu ngati yatayikira ndikusintha mphete yosindikizira kapena pakati.
Vavu Yochepetsera Kupanikizika / Kuwona Valve: Yang'anani valavu yochepetsera mphamvu ndikuyang'ana valavu pa valve yaikulu kuti muwonetsetse kupanikizika kosasunthika ndipo palibe kutuluka mkati.
- Kuyendera kwa Circuit ndi ECU (Chotsani Zosokoneza Zamagetsi Pamagetsi)
Fault Code Reading: Werengani ma code a FM/IMM okhala ndi chida chodziwira matenda, kuyang'ana kwambiri P0216 (injector yamafuta), P0193 (kuthamanga kwamafuta), ndi zolakwika zokhudzana ndi PC-EPC, kenako thetsani molingana ndi ma code.
Pin ndi Kulumikizana kwa ECU:
Power Supply/Ground: ECU nthawi zonse mphamvu zamagetsi ndi 24V, makiyi pamagetsi ndi 24V, ndipo kukana pansi ndi <1Ω. Ngati zachilendo, yang'anani ma fuse, ma relay, ndi ma waya.
CAN Basi: CAN-H voteji ndi 2.5-3.5V, CAN-L voteji ndi 1.5-2.5V. Ngati mphamvu yamagetsi ndi yachilendo, yang'anani ngati pali short circuit, open circuit, kapena terminal resistor issues.
Sensor Calibration: Onetsetsani kuti ma signature kuchokera pa liwiro, kuthamanga (P1/P2/pilot), ndi masensa kutentha ali mkati mwa muyezo. Sanjani kapena kusintha masensa ngati kupatuka kuli kwakukulu.
- Malo Omwe Amakhala Olakwa ndi Kusamalidwa (Osankhidwa ndi Ma frequency)
| Fault Phenomenon | Zomwe Zimayambitsa pafupipafupi | Kusamalira Solution |
| Kuthamanga kwapang'onopang'ono kwa makina + kuthamanga kwa oyendetsa otsika | Kuthamanga kwa oyendetsa kuchepetsa ma valve kupanikizana / kutopa kwa masika | Yeretsani / sinthani valavu yochepetsera kuthamanga ndikusintha kupanikizika kwa 3.3 ± 0.2MPa |
| Kuthamanga kwa makina otsika + kuthamanga kwa PC-EPC kwachilendo | Solenoid valve kupanikizana / kuwonongeka kwa koyilo | Yeretsani pachimake valavu kapena sinthani valavu ya solenoid, ndikuwongolera mphamvu / kuthamanga |
| Kuthamanga kwapang'onopang'ono kwa makina + kuthamanga kwakukulu | Kutuluka kwamkati kwa valavu yayikulu yothandizira / valavu yotsitsa | Sungunulani, yeretsani / m'malo valavu, ndikuyambiranso kukakamiza ku 34.3MPa |
| Kuthamanga kwa makina ochepera + injini kuyimitsidwa | Kusagwirizana pakati pa kutuluka kwa mpope waukulu ndi mphamvu ya injini | Sinthani PC-EPC ndikuyang'ana makina amafuta kuti agwirizane ndi piritsi lamagetsi |
| Kuthamanga kwa makina ocheperako kukatentha (kwabwinobwino kukazizira) | Kuwonongeka kwamafuta a Hydraulic / kutsekeka kwa fyuluta | Bwezerani mafuta ndi zosefera, ndikuyeretsani kuzungulira kwamafuta |
- Zida Zoyendera ndi Kusamala
Zida Zofunikira
Pilot/ main pressure test gauge (0-40MPa), tachometer, diagnostic tool (monga Komatsu IDSS), PC-EPC solenoid valve test wire, multimeter, flow meter.
Njira zodzitetezera
Gwiritsani ntchito zolumikizira zokhazikika poyezera kuthamanga kuti mupewe kutayikira komanso kuvulala kwanu; chepetsani kupanikizika musanayambe disassembly mutatha kuyeza.
Yesaninso ndi injini yotentha pambuyo pa zosintha zonse kapena zosintha kuti muwonetsetse kuti ikugwira ntchito pansi pamikhalidwe yokhazikika.
Ikani patsogolo kugwiritsa ntchito zida zosinthira zoyambirira; mavavu a aftermarket solenoid angakhale ndi mphamvu zokwanira.
- Chidule Chachidule cha Njira Yogwirira Ntchito (Yosankhidwa Ndi Chofunika Kwambiri)
Kuyang'anatu mwachangu → Chotsani mawonekedwe, mulingo wamafuta, kutayikira, ndi zovuta zama waya.
Injini → kuyeza liwiro, kuthamanga kwamafuta, ndi kufananitsa mphamvu.
Dongosolo loyendetsa ndege → kuyeza kuthamanga → Sinthani/kuyeretsani valavu yochepetsera kuthamanga.
Dongosolo lalikulu → Yezerani kupanikizika kwakukulu → Yang'anani valavu yayikulu yotsitsa/yotsitsa.
PC-EPC → Yezetsani panopa/kukanika → Yeretsani/ m'malo valavu ya solenoid.
Pampu yayikulu/vavu yogawa → Yang'anani makina osinthika, kupindika kwa ma valve, ndi kutayikira kwamkati.
Circuit/ECU → Werengani manambala olakwika → Yang'anani mapini, kulumikizana, ndi zomverera.
