Check the oil pan for failure, damage or cracks. Replace of defective.
Check the oil screen for failure, damage and cracks and replace of defective.
Check for worn (especially stepped) or damaged surfaces contacting gears.
Check for worn or damaged gear teeth surfaces.
Check for clearance between outer gear and front case.
Outer gear
Clearance between outer circumference and front case
1.3 L : 0.12 ~ 0.18 mm (0.005 ~ 0.007 in.)
1.1 L : 0.10 ~ 0.18 mm (0.004 ~ 0.007 in.)
Check the tip clearance on the pump rotor.
Standard value
1.3 L : 0.025 ~ 0.069 mm (0.001 ~ 0.003 in.)
1.1 L : 0.06 ~ 0.18 mm (0.002 ~ 0.007 in.)
Check the axial clearance on the outer pump roter.
Standard value
1.3 L : 0.04 ~ 0.087 mm (0.0016 ~ 0.0034 in.)
1.1 L : 0.04 ~ 0.095 mm (0.0016 ~ 0.0037 in.)