Engine Oil Pump Overhaul
  1. Remove the upper balancer shaft holder and bearings again, and measure the widest part of the plastigage.
    If the balancer shaft No. 2 journal oil clearance is out-of-tolerance, replace the balancer shafts and recheck. If it still out-of-tolerance; replace the oil pump.
    No. 2 Journal Oil Clearance
    Standard (New):
    0.050−0.082 mm
    (0.0020−0.0032 in.)
    Service Limit:
    0.11 mm (0.004 in.)

  1. Clean both balancer shaft No. 3 journals and bearings with a clean shop towel.
  1. Place one strip of plastigage across each No. 3 journals.
  1. Reinstall the bearings and upper balancer shaft holder, then torque the bolts.
    NOTE: Do not rotate the balancer shafts during inspection.