Oil Pump Housing

Check clearance between hub of inner rotor (1) and oil pump housing (2) as follows.

1. Measure outside diameter of hub of inner rotor (1) using micrometer.
2. Measure inside diameter of oil pump housing (2) using bore gauge.
3. Calculate difference between diameters measured in Step  1) and Step  2).

   If clearance is out of specification, replace oil pump assembly.

   Oil pump housing clearance 

   OIL PUMP HOUSING CLEARANCE SPECIFICATION
   
   

   	Standard
   Inner rotor hub outside diameter	20.960 - 20.970 mm (0.82520 - 0.82559 in.)
   Oil pump housing inside diameter	21.000 - 21.018 mm (0.82677 - 0.82748 in.)
   Clearance	0.030 - 0.058 mm (0.0012 - 0.0023 in.)

   Fig 1: Measuring Outside Diameter Of Hub Of Inner Rotor And Inside Diameter Of Oil Pump Housing

   Courtesy of SUZUKI OF AMERICA CORP.