Grand Caravan FWD L4-2.4L VIN B (1997)
Crankshaft: Service and Repair
Cleaning and Inspection
END PLAY CHECK
1. Mount a dial indicator to front of engine, locating probe on nose of crankshaft.
2. Move crankshaft all the way to the rear of its travel.
3. Zero the dial indicator.
4. Move crankshaft all the way to the front and read the dial indicator. See: Specifications
OPTIONAL CHECK
1. Move crankshaft all the way to the rear of its travel using a lever inserted between a main bearing cap and a crankshaft cheek, using care not to
damage any bearing surface. DO NOT loosen main bearing cap.
2. Use a feeler gauge between number three thrust bearing and machined crankshaft surface to determine end play.
JOURNAL INSPECTION
The crankshaft journals should be checked for excessive wear, taper and scoring. Limits of taper or out-of-round on any crankshaft journals should
be held to 0.025 mm (0.001 inch). Journal grinding should not exceed 0.305 mm (0.012 inch) under the standard journal diameter. DO NOT
grind thrust faces of Number 3 main bearing. DO NOT nick crank pin or bearing fillets. After grinding, remove rough edges from crankshaft oil
holes and clean out all passages.
CAUTION: With the nodular cast iron crankshafts used it is important that the final paper or cloth polish after any journal regrind be in the same
direction as normal rotation in the engine.
