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3. LUBRICATION SYSTEM QUANNON125
SERVICE INFORMATION
GENERAL INSTRUCTIONS
· The service and maintenance of this section can be performed with the engine installed in the
frame.
· Use care when removing and installing the oil pump not to allow dust and foreign matters to enter
the engine and oil line.
· The oil pump must be replaced as a set when it reaches its service life.
· After the oil pump is installed, check each part for oil leaks and improper lubrication.
· When removing and installing the oil cooler, be careful not to bend or deform the oil pipe.
SPECIFICATIONS
Item Standard (mm) Service Limit (mm)
Inner rotor-to-outer rotor clearance 0.20
Oil pump Outer rotor-to-pump body clearance 0.20
Rotor end-to-pump body clearance 0.0150.10 0.15
TROUBLESHOOTING
Oil level too low Engine burns
· Natural oil consumption · Low or no lubrication pressure
· Oil leaks · Clogged oil passages
· Worn or poorly installed piston rings · Not use the specified oil
· Worn valve guide or seal
· Clogged or leaky oil pipe
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