Crankshaft & Main Bearings
- Ensure main bearing caps are numbered for location. Mark bearing cap for reassembly reference. Remove main bearing cap bolts in proper sequence. See Fig 1.
- Cylinder block main bearing bore size is indicated by numerical size mark stamped on cylinder block. See Fig 3. Main bearing journal size is determined by size marks, given in dashes (-), located on crankshaft front counterweight. See Fig 4.
- If color code on original bearing cannot be obtained, use size marks on cylinder block and crankshaft to determine proper color-coded main bearing. See Fig 2.
- When installing main bearing caps, ensure reassembly reference mark on cap points toward front of engine. Coat bolt threads with engine oil before installing.
- Tighten bolts in sequence to specification. See Fig 5. See TORQUE SPECIFICATIONS . Ensure crankshaft end play is within specification. See CRANKSHAFT, MAIN & CONNECTING ROD BEARINGS table under ENGINE SPECIFICATIONS.
Courtesy of ISUZU MOTOR CO.
Courtesy of ISUZU MOTOR CO.
Courtesy of ISUZU MOTOR CO.
Courtesy of ISUZU MOTOR CO.
Courtesy of ISUZU MOTOR CO.