JAC HFC4DA1-2B1 - Technical Maintenance of Injection Pump

Technicalmaintenanceofcoolingsystem
Thereshouldbeenoughcoolanttoensureengineworkwellandcoolantintimebeforerunningthevehicle.
Checklengthoffanbelt:beltdeflectionis100Nbelow,newbeltis8-10mm,oldbeltis9-11mm.
Checkwhetherthereiscrackonfanbelt,replacebeltifitfailtotransmit.
Technicalmaintenanceofinjectionpump
Injectionpumpisheartofdieselengine,itiscomposedofmanyaccurateparts.Onlytheinjectionpumpismaintained
right,willitworkwellanditsservicelifewillbeprolonged.
1.HFC4DA1seriesdieselengineadoptsfuelinjectionpumpofVEtypeandislubricatedbylightdieselfuelwhichisac鄄
cordantwithGB252.Wateredfuelisnotallowed,forinjectionpumpofVEtypeislubricatedbydieselfuel.Wateredfuel
willmakeitlubricatedbadlyandcauseinjectionpumppartsdamaged.Dieselfuelshouldbedepositedformorethan
48handbeputintouseafterfiltrated.Usecleantoolsandcontainertofillupthedieselfuel.
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Note:
荫 Donotusehardwatersuchasrunningwaterandmineralwater.
荫 Donotusebadantifreezecoolantorcoolantofdifferenttypecoolantincaseofcorrodingmachineparts
荫 Ifcoolantisconsumedquickly,itshowedthatthereisleakageoncoolingsystem.Checkitinservicestation.
Note: addedoilshouldbeflownintooilsumpbypushingrodholeonthecylinderheadandonesideoftappet.So
oillevelshouldbecheckedafter5minutes.
pistonringwillbegluedbycokingtomakedieselenginesmokeandcausefuelpermeation.Therefore,apartfrompay鄄
ingattentiontotheoilpressure,checkingoillevelbeforerunningorrunningevery300-500isnecessary.
3.Replacenewoil
Beenusedforalongtime,therewillbeimpurityanddustinoil.Duetounburnedfueloilmakesoilthinandwastedgas
comingintooilwithaceticanhydridemakeoilbadandcorrodeparts,so,replacenewoilafterrunningfor10000kmis
necessary.CFdieseloilaccordingwithGB11122isrecommended.
Ifthereisabundantimpurityinoilsump,beforethenewdieselisputintouse,use5#and7#mechanicalfuel(lightbob鄄
binoil)tocleanlubricationsystem.Petrolorkeroceneisforbidden.
Whencleaninginsideofdieselengine,fill5#and7#mechanicalfuelintooilsump.Ifoillevelrisetocentralpositionof
tworoundholesofoildipstick,dismantleallofthepre-heatingplugandrotatecrankshaftofdieselenginewithjiggle
barfor2-3minutes,anddrainoffcleansingoilatonce.
Afterreplacingnewoileverytime,makedieselenginedono-loadrunningforashorttimetoguaranteelubricationsys鄄
temandotherpositionthatneedsoilfueledenough.
Whenfillingoilfromoilinletthatisoncylinderheadshield,cleanthecylinderhead.Coverthelidafterfilling.
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Notice: checkoillevelaswellascheckingoilpressure.
Warning: hotoilcaninjurepeople,makesuretodealwitholdoiltoprotectenvironment.Screwmomentandoil
bleedplug,addnewoilandcheckoillevel.
OWNER爷SMANUAL
2.8LSeriesDieselEngine