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Home >> Plymouth >> 1994 >> Colt Base, 2D Sedan, Standard, F5M21 >> Repair and Diagnosis >> Engine Mechanical >> Mechanical >> 1.5L 4-CYL - VIN [A] & 1.8L 4-CYL - VIN [C] >> Overhaul >> Cylinder Block Assembly >> Crankshaft & Main Bearings

Crankshaft & Main Bearings

  1. Measure main and connecting rod bearing journals diameters. Measure journal taper and out-of-round. Measure crankshaft end play. See CRANKSHAFT, MAIN & CONNECTING ROD BEARINGS  table under ENGINE SPECIFICATIONS. Replace crankshaft if measurements are not within specification.
  2. Using Plastigage, measure main bearing oil clearance. Tighten bearing cap bolts to 37-41 ft. lbs. (50-55 N.m). Refer to CRANKSHAFT, MAIN & CONNECTING ROD BEARINGS  and CONNECTING RODS  tables under ENGINE SPECIFICATIONS.
  3. If oil clearance is incorrect, install a new bearing set and again measure oil clearance. Undersize bearings are available. If proper oil clearance cannot be obtained by using new bearings, replace crankshaft.
  4. On 1.5L, install main bearing caps in numerical order, according to number stamped on cap. Install bearing caps so arrow on top of cap points toward timing belt end of engine. Tighten main bearing cap bolts in 2 stages to specification, starting at center and working outward. See TORQUE SPECIFICATIONS . On 1.8L, install main bearing caps with arrow on top of cap pointing toward timing belt end of engine. "F" stamped on top of cap (next to arrow) indicates front main bearing cap; "R" indicates rear main bearing cap. Tighten main bearing cap bolts (torque to yield type) in 2 stages to specification, starting at center and working outward. See TORQUE SPECIFICATIONS .
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