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Home >> Chevrolet >> 2011 >> Suburban C2500 >> Repair and Diagnosis >> External Pages >> Different car >> Section 1763 (Engine Mechanical - Hybrid (LZ1) - Repair Instructions - Off Vehicle) >> Repair Instructions - Off Vehicle >> Piston, Connecting Rod, and Bearing Installation >> Piston, Pin, and Connecting Rod Installation

Piston, Pin, and Connecting Rod Installation

WARNING: This page is about a different car, the 2011 GMC Yukon, 2011 Chevrolet Tahoe, and 2011 Cadillac Escalade. However, it is still accessible from the selected car via links, so may be relevant.
    Fig 1: Piston, Connecting Rod And Connecting Rod Bearing
    GM1552501Courtesy of GENERAL MOTORS CORP.
  1. Lubricate the following components with clean engine oil:
    • Piston
    • Piston rings
    • Cylinder bore
    • Bearings and bearing surfaces
  2. Install the bearings to the connecting rod and cap.
  3. Position the oil control ring end gaps a minimum of 25 mm (1.0 in) from each other.
  4. Position the compression ring end gaps 180 degrees opposite each other.
    5. Fig 2: Connecting Rod Assembly And Guide
    GM1552499Courtesy of GENERAL MOTORS CORP.
  5. Install the J 41556  guide to the connecting rod.
    6. Fig 3: Mark On Top Of Piston And Connecting Rod Tab
    GM1768708Courtesy of GENERAL MOTORS CORP.
  6. Identify the proper installation direction of the piston and connecting rod assembly. When installing the piston and connecting rod assembly, the mark on the top of the piston (1) and the tab (2) on the side of the connecting rod should face the front of the engine.
    7. Fig 4: Installing Piston
    GM1552497Courtesy of GENERAL MOTORS CORP.
  7. Install the J 8037  compressor onto the piston and compress the piston rings.
    8. NOTE:

    The piston alignment mark MUST face the front of the engine block.

  8. Install the piston, pin, and connecting rod assembly into the cylinder bore. Hold the piston ring compressor firmly against the engine block. Using a wooden hammer handle, lightly tap the top of the piston until all piston rings have entered the cylinder bore.
  9. Use the J 41556 to guide the connecting rod onto the crankshaft journal.
  10. Remove the J 41556 from the connecting rod.
    11. Fig 5: Connecting Rod Bolt, Cap And Bearing
    GM1552547Courtesy of GENERAL MOTORS CORP.
    CAUTION:

    Refer to Fastener Caution .

    NOTE:

    The connecting rod and cap must be assembled with the mating surfaces properly aligned.

  11. Install the bearing cap (103), bearing (104), and bolts (102).
    1. Tighten the bolts a first pass to 20 N.m (15 lb ft).
    2. Tighten the bolts a final pass to 85 degrees using the J 45059  meter.
    12. Fig 6: Measuring Connecting Rod Side Clearance
    GM1366378Courtesy of GENERAL MOTORS CORP.
  12. Measure the connecting rods for the proper side clearance. Refer to Engine Mechanical Specifications .
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