Oil Pump Clearance Inspection

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Measure the thrust clearance between the oil pump rotors (A) and the clutch housing (B) with a straight edge (C) and a feeler gauge (D).
Standard (new): 0.03- 0.13 mm (0.001- 0.005 in)

Service Limit: 0.15 mm (0.005 in)

Fig 1: Measuring Thrust Clearance Between Oil Pump Rotors And Clutch Housing Using Straight Edge And Feeler Gauge
Courtesy of AMERICAN HONDA MOTOR CO., INC.
Measure the side clearance between the oil pump outer rotor (A) and the clutch housing (B) with a feeler gauge (C).
Standard (new): 0.1- 0.2 mm (0.004- 0.007 in)

Service Limit: 0.22 mm (0.008 in)

Fig 2: Measuring Side Clearance Between Oil Pump Outer Rotor And Clutch Housing Using Feeler Gauge
Courtesy of AMERICAN HONDA MOTOR CO., INC.
Measure the side clearance between the oil pump outer rotor (A) and the oil pump inner rotor (B) with a feeler gauge (C).
Standard (new): 0.14 mm (0.006 in) max.

Service Limit: 0.2 mm (0.007 in)

Fig 3: Measuring Side Clearance Between Oil Pump Outer Rotor And Oil Pump Inner Rotor Using Feeler Gauge
Courtesy of AMERICAN HONDA MOTOR CO., INC.
If any clearance is not within the standard, replace the oil pump outer and inner rotors as a set.