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HOMESERVICE MANUALSCHEVROLET2008HHR LT, 2.4 P, AUTOMATICREPAIR AND DIAGNOSISEXTERNAL PAGESDIFFERENT CARSECTION 162 (ENGINE LUBRICATION SYSTEM)OIL PUMP OVERHAULINSPECTION
2008 Chevrolet HHR LT, 2.4 P, Automatic

Oil Pump Overhaul: Inspection

2008 Chevrolet HHR LT, 2.4 P, AutomaticSECTION Inspection
WARNING: This page is about a different car, the 2011 Honda Insight and 2010 Honda Insight. However, it is still accessible from the selected car via links, so may be relevant.
  1. Remove the screws from the pump housing, then separate the housing and the cover.
  2. Check the inner-to-outer rotor radial clearance between the inner rotor (A) and the outer rotor (B). If the inner-to-outer rotor radial clearance exceeds the service limit, replace the oil pump.

    Inner Rotor-to-Outer Rotor Radial 

    Clearance 

    Standard (New): 

    Service Limit: 0.06-0.16 mm (0.002-0.006 in) 

    0.20 mm (0.008 in) 

    Fig 1: Checking Inner-To-Outer Rotor Radial Clearance Between Inner Rotor And Outer Rotor
    G06429058Courtesy of AMERICAN HONDA MOTOR CO., INC.
  3. Check the pump housing-to-rotor axial clearance between the rotors (A) and the pump housing (B). If the pump housing-to-rotor axial clearance exceeds the service limit, replace the oil pump.

    Housing-to-Rotor Axial Clearance 

    Standard (New): 0.02-0.06 mm (0.001-0.002 in) 

    Service Limit: 0.15 mm (0.006 in) 

    Fig 2: Checking Pump Housing-To-Rotor Axial Clearance Between Rotors And Pump Housing
    G06429059Courtesy of AMERICAN HONDA MOTOR CO., INC.
  4. Check the pump housing-to-outer rotor radial clearance between the outer rotor (A) and the pump housing (B). If the pump housing-to-outer rotor radial clearance exceeds the service limit, replace the oil pump.

    Pump Housing-to-Outer Rotor Radial 

    Clearance 

    Standard (New): 0.100-0.175 mm (0.0039-0.0069 in) 

    Service Limit: 0.20 mm (0.008 in) 

    Fig 3: Checking Pump Housing-To-Outer Rotor Radial Clearance Between Outer Rotor And Pump Housing
    G06429060Courtesy of AMERICAN HONDA MOTOR CO., INC.
  5. Inspect both rotors and the pump housing for scoring or other damage. Replace parts, if necessary.
  6. Check that the oil pump turns freely.
RENDER: 1.0x

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When to See a Mechanic

Stop DIY work and contact a certified mechanic immediately if any of the following apply:

  • • You smell fuel, burning insulation, or see smoke.
  • • Brakes feel soft, pull hard to one side, or make grinding noises.
  • • The engine overheats, stalls repeatedly, or misfires under load.
  • • You are missing required tools, torque specs, or safe lifting equipment.
  • • You are not confident in the next step or safety outcome.