LEMON Manuals: Even more car manuals for everyone
Home >> Chevrolet >> 2002 >> Blazer 4D Utility, 4WD, Part Time >> Repair and Diagnosis >> Engine Mechanical >> Mechanical >> Engine Mechanical - 4.3L (On-Vehicle) >> Repair Instructions >> Oil Pan Replacement (2WD) >> Installation Procedure

Installation Procedure

NOTE: Any time the transmission and the engine oil pan are off of the engine at the same time, install the transmission before the oil pan. This is to allow for the proper oil pan alignment. Failure to achieve the correct oil pan alignment can result in transmission failure.
  1. Apply a 5 mm (0.197 in) wide and 25 mm (1.0 in) long bead of adhesive GM P/N 12346141 or equivalent to both the right and left sides of the engine front cover to engine block junction at the oil pan sealing surfaces.
    Fig 1: Applying Adhesive At Engine Front Cover To Engine Block Junction
    G01661250Courtesy of GENERAL MOTORS CORP.
  2. Apply a 5 mm (0.197 in) wide and 25 mm (1.0 in) long bead of adhesive GM P/N 12346141 or equivalent to both the right and left sides of the crankshaft rear oil seal housing to engine block junction at the oil pan sealing surfaces.
    Fig 2: Applying Adhesive At Crankshaft Rear Oil Seal Housing To Engine Block Junction
    G01661251Courtesy of GENERAL MOTORS CORP.

    Important:  Always install a NEW oil pan gasket.

    The oil pan gasket and oil pan must be installed and the fasteners tightened while the adhesive is still wet to the touch.

  3. Install the NEW oil pan gasket into the groove in the oil pan
    Fig 3: Oil Pan Gasket
    G01661252Courtesy of GENERAL MOTORS CORP.

    Important:  The oil pan alignment must always be flush or forward no more than 0.3 mm (0.011 in) from the rear face of the engine block.

  4. Install the oil pan onto the engine block.

    Press the oil pan gasket into the grooves of the engine front cover and crankshaft rear oil seal housing.

  5. Slide the oil pan back against a suitable straight edge.
    Fig 4: Oil Pan
    G01661253Courtesy of GENERAL MOTORS CORP.
  6. Install the oil pan bolts and nuts, but do not tighten.
  7. Measure the pan-to-transmission housing clearance using a feeler gage and a straight edge.

    Use a feeler gage to check the clearance between the oil pan-to-transmission housing measurement points. If the clearance exceeds 0.3 mm (0.011 in) at any of the 3 oil pan-to-transmission housing measurement points (1), then repeat the step until the oil pan-to-transmission housing clearance is within the specification. The oil pan must always be forward of the rear face of the engine block.

    Fig 5: Measuring Pan-To-Transmission Housing Clearance
    G01661254Courtesy of GENERAL MOTORS CORP.
    NOTE: Refer to FASTENER NOTICE .
  8. Tighten the oil pan bolts and nuts in sequence.

    Tighten 

    Tighten the oil pan bolts to 25 N.m (18 lb ft).

  9. Measure the clearance between the 3 oil pan-to-transmission housing measurement points in order to ensure proper alignment.
    Fig 6: Oil Pan Bolts Tightening Sequence
    G01661255Courtesy of GENERAL MOTORS CORP.
  10. Install a NEW oil pan drain plug seal (O-ring) onto the oil pan drain plug.
  11. Install the oil pan drain plug into the oil pan.

    Tighten 

    Tighten the oil pan drain plug to 25 N.m (18 lb ft).

    Fig 7: Oil Pan Drain Plug
    G01661256Courtesy of GENERAL MOTORS CORP.

    Important:  The low oil level sensor is not reusable. Use a NEW low oil sensor.

  12. Install the NEW engine oil level sensor (if applicable).

    Tighten 

    Tighten the engine oil level sensor to 13 N.m (115 lb in).

  13. Install the engine. Refer to Engine Replacement .
  14. Fill the engine with oil. Refer to Engine Oil and Oil Filter Replacement .
    Fig 8: Engine Oil Level Sensor
    G01661257Courtesy of GENERAL MOTORS CORP.
scientia non olet · About LEMON Manuals