WEICHAI WP12 User Manual

43
TROUBLE SHOOTING GUIDE FOR WP12 MARINE DIESEL ENGINE
detsujda eb ot sdeen rotcejni leuF
derocs ro nrow si notsip ro eveels rednilyC
tcerrocni si gnimit evlav dna noitcejni leuF
esool si tlob gnitnuoM
strap gnivird htiw dengila ton si enignE
gib oot si hsalkcaB
evird raeg ni htoot nekorb raeg ynam ro enO
degamad si gniraeb dor gnitcennoc ro gniraeb niaM
deluahrevo eb ot sdeen enignE
noitadnemmocer htiw ecnailpmoc ni ton si edarg liO
eruliaf ni si evlav
gnitsujda erusserp lio
wol si level lio ro lio skcal esacknarC
deggolc si reniarts noitcus liO
dekcolb si egassap liO
desaerg si notsiP
ytrid si retlif liO
edisnidna edistuo skael liO
ytrid si retlif leuF
noitcnuflamni si retimil ekomS
detsujdasim si pmup noitcejni leuF
reporpmi si elzzonnoitcejni fo gnizimotA
leuf ni retaW
wol oot si ronrevog fo deeps hgiH
dettif ylreporpmi si ylbmessa thgiew ronrevoG
d
elbmessa ylreporpmi si gnirps eldI
reporpmi si tnemtsujda msinahcem elttorhT
dekcarc si rotcejnI
si ylbmessathgiew ronrevoG
esool si rotcennoc nruter leuf ro telni rotcejnI
nekorb si tfahs evird
pmup noitcejni leuF
nekorb si tfahs evird pmup noitcejni leuF
dekcolb si ecifiro elzzoN rotcejnI
edistuo skael leuF
deggolc si epip telnI
telni otni skael riA
roop si ytilauq leuF
Lacks fuel
tcerrocni si ecnaraelc evlav teltuo
dna telnI
staes evlav ro sevlav tel
tuo dna telnI
yk
aeL
dekcohc si rebmahc rosserpmoc regrahc obruT
ekatni dna regrahc obrut neewteb ni ssol ria desserpmoC
manifold
)erutarepmet ria hgih( .ria esnsed woL
erusserp kcab tsuahxe hgiH
dekcohc si metsys ekatni riA /ria tneiciiffusnI
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Others
Engine knocking Abormal metal knocking sound Excessive gear meshing noise Abnormal vibration of engine
Fuel systemLubricating Oil system
Cooling water temperature is very low Cooling water temperature is very high Oil temperature is very high Speed hunting in idle speed Main bearing and connecting rod bearing are worn out Valve and valve guide are worn Engine is shutdown suddenly Speed is not stable Oil consumption is too high High carbon deposits in the crankcase wall Fuel dilution in engine oil Oil pressure is low Heavy black smoke at low load Insuffient power or no power Fail to reach the rated speed Fuel consumption is high
Trouble in raising and lowering the
Valve mechanism
Difficult or unable to start Engine is shutdown soon after Heavy black smoke at idle speed
PROBABLE REASONFAILURE
FAILURE
SYMPTOM

WEICHAI WP12 Specifications

General

Engine Model	WP12
Number of Cylinders	6
Displacement	11.596 L
Bore x Stroke	126 mm x 155 mm
Compression Ratio	17:1
Max Torque	2100N.m
Weight	1100 kg
Fuel System	High Pressure Common Rail
Fuel Consumption	≤195g/kWh