GM Service Manual Online
For 1990-2009 cars only
Makes 🢒 Chevrolet 🢒 2001 🢒 Blazer - 2WD (China) 🢒 Engine 🢒 Engine Mechanical - 2.4L 🢒 Oil Pump Cleaning and Inspection

    Object Number: 189117 Size: SH
  1. Clean all of the oil pump parts in solvent.
  2. Inspect the pump cover housing for the following conditions:
    3. • Cracks
    • Scoring
    • Porous or damaged casting
    • Damaged threads
    • Excessive wear or galling
  3. Inspect the pressure relief valve for damage. Replace the valve if the valve is damaged.
  4. Inspect the gerotor for the following conditions:
    5. • Chipping
    • Galling
    • Excessive wear

    Object Number: 33683 Size: SH
  5. Measure the following parts:
    6. • The gerotor cavity depth
    • The inner gerotor tip clearance
    • The outer gerotor diameter clearance
    • The gear dimensions
  6. Replace the pump as an assembly if the housing or gears are worn beyond specifications.