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Home >> Subaru >> 1981 >> GLF Automatic Trans >> Repair and Diagnosis (Single Page) >> Engine Mechanical >> Mechanical >> 1600 & 1800 4-Cylinder >> Crankshaft Main & Connecting Rod Bearings >> Main & Connecting Rod Bearings

Main & Connecting Rod Bearings

  1. Check connecting rod side play with a feeler gauge. If side play exceeds specifications, replace connecting rod.
  2. Use Plastigage method to measure both main and connecting rod bearing clearances. Main bearing inserts are available in standard 0.001" (0.03 mm) 0.002" (0.05 mm) and 0.010" (0.25 mm) undersize. Connecting rod bearing inserts are available in standard 0.002" (0.05 mm) and 0.010" (0.25 mm) undersize.
  3. Check crankshaft for bend by placing front and rear main journals on "V" blocks and fitting a dial indicator on center journal. Correct or replace crankshaft if bend exceeds 0.0014" (0.035 mm).
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