SDEC D Series - Oil Consumption Is too High; Oil Pressure Is too High; Oil Pressure Is too Low

Operation and Maintenance Manual SC9DF Electronically Controlled Diesel Engine for Agricultural Equipment
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5.5 Oil consumption is too high
Possible causes Correction
There is oil leak on the engine surface Check external pipelines, gasket, oil seal, etc. for leakage and replace
damaged parts
The oil level is too high Check the oil level, adjust it if necessary
Improper oil is used Change the oil with qualified oil specified
The oil cooler has leakage Check whether there’s the oil in the coolant
The oil leaks from the turbocharger and
enters the intake and exhaust pipes
Check the turbocharger inlet and outlet for oil trace
The internal parts of the engine are over
worn so that the seal becomes ineffective
Consult the authorized service station or provider
5.6 Oil pressure is too high
Possible causes Correction
The pressure gauge is malfunction Check pressure gauge for its function
The operating temperature of the engine
is too low
See Section 5.10 Coolant temperature is too low
The oil is incorrect in specification, or its
viscosity is too high
Check and replace with qualified oil
The bypass valve gets stuck at the close
position
Check and replace the bypass valve
5.7 Oil pressure is too low
Possible causes Correction
The oil level is too low Adjust the oil level
The oil is incorrect in specification, or its
viscosity is too low
Check and replace with qualified oil
Oil pipeline joint is loose or oil duct Check for oil leak