3.7.1 Case Description about Lub-oil Pressure Is Too Low (1)
● Lub-oil pressure is low. Oil level of oil pan is normal, but oil
brand is not satised to requirement.
● Fault is not removed after replacing oil and oil filter and
cleaning oil cooler.
● Inspect turbocharger, strainer, oil pipe and connecting washer
are not blocked or broken
● Inspect limiter valve of main oil passage and then find that
limiter valve dirty.
Users didn’t replace oil, which causes
limiter valve of main oil passage dirty
Case analysis
Remedy
Replace limiter valve of main oil passag
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