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Home >> Isuzu >> 2007 >> i-290 LS, Standard >> Repair and Diagnosis >> External Pages >> Different car >> Section 77 (Engine Mechanical - 4.6L - 3 Of 4) >> Off-Vehicle Repair Instructions (2 Of 3) >> Piston, Connecting Rod, and Bearing Installation >> Piston and Connecting Rod Assembly Procedure

Piston and Connecting Rod Assembly Procedure

WARNING: This page is about a different car, the 2007 Cadillac DTS. However, it is still accessible from the selected car via links, so may be relevant.
  1. Rotate the crankshaft using the J 39946  in order to align the crankshaft connecting rod journal being serviced to BDC. See Special Tools .
  2. Liberally lubricate the cylinder walls, piston rings and piston skirts with clean engine oil.
    3. IMPORTANT: Connecting rod bearings that have been used in a running engine, must be replaced with NEW connecting rod bearings for reassembly.
  3. Select the correctly numbered piston/connecting rod assembly for the cylinder. An arrow showing proper piston orientation is located on the top of the piston.
    4. Fig 1: View of J 8037
    GM1215036Courtesy of GENERAL MOTORS CORP.
  4. Compress the piston rings using the EN-47701  or equivalent. See Special Tools .
    5. IMPORTANT: Extreme care must be exercised when installing the piston and connecting rod in order to be sure the rod does not scrape or nick the cylinder bore or the crankshaft surfaces.
  5. Using both hands, slowly guide the piston and connecting rod assembly into the cylinder from the top and bottom of the cylinder. DO NOT allow the connecting rod to contact the cylinder wall.
  6. When the piston ring compressor contacts the deck surface, gently tap the piston into the cylinder using the handle end of a dead-blow hammer. Guide the connecting rod onto the crankshaft bearing journal while taping the piston into the cylinder.
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