Yamaha MT-03 Service Manual

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5-44OIL PUMPEAS00364CHECKING THE OIL PUMP1. Check:• Oil pump driven gear “1”• Oil pump housing 1 “2”• Oil pump housing cover “3”• Oil pump housing 2 “4”Cracks/damage/wear → Replace the defec-tive part(s).2. Measure:• Inner-rotor-to-outer-rotor-tip clearance “a”• Outer-rotor-to-oil-pump-housing clearance “b”• Oil-pump-housing-to-inner-rotor-and-outer-rotor clearance “c”Out of specification → Replace the oil pump.1. Inner rotor2. Outer rotor3. Oil pump housingInner-rotor-to-outer-rotor-tipclearance0.07-0.12 mm(0.0028-0.0047 in): 0.2 mm (0.008 in)Outer-rotor-to-oil-pump-housingclearance0.03-0.08 mm(0.0012-0.0031 in): 0.15 mm (0.0059 in)Oil-pump-housing-to-inner-rotor-and-outer-rotor clearance0.03-0.08 mm(0.0012-0.0031 in): 0.15 mm (0.0059 in)3. Check:• Oil pump operationRough movement → Repeat steps (1) and(2) or replace the defective part(s).EAS00367CHECKING THE OIL DELIVERY PIPESAND HOSESThe following procedure applies to all of the oildelivery pipes and hoses.1. Check:• Oil delivery pipe• Oil delivery hoseDamage → Replace.Obstruction → Wash and blow out with com-pressed air.