OEM Chrysler LHS Crankshaft

Chrysler LHS Crankshaft Parts and Q&A

• Crankshaft
  4792692AB
  Q: How to Remove and Install a Crankshaft in an Engine on Chrysler LHS?

  A:

  First, pull out the engine from your vehicle and then get rid of the Oil Pan and pickup tube. Afterward, separate the crankshaft vibration damper, the idler pulley used on the accessory Drive Belt and the front lower, main and left side Timing Belt covers. Remove the tensioner of the timing belt, the belt itself and then the crankshaft sprocket. Get the dowel pin out of the crankshaft, then back out the oil pump assembly and the crankshaft rear oil seal retainer. Remove all the bearing caps from the connecting rod and the main bearings and remember to mark them so you reassemble them properly. The last step is to remove the crankshaft from the cylinder block. Check the crankshaft journals for scratches, wedging and excessive wear and keep limits of taper or out-of-round below 0.015 mm (0.0006 inch), making sure that journal grinding is within 0.305 mm (0.012 inch) of the standard journal diameter without damaging the thrust faces of the Number 2 main bearing or crankpin or its bearing fillets. Following grinding, wash and polish the crankshaft oil holes and passages in the same way the engine naturally rotates. To install, place the main bearings, put them into place and then put the crankshaft into the cylinder block. Move the crankshaft about halfway forward, apply special sealant to the thrust washers, install the front one, then move it all the way forward to install the rear washer. Before installing the main bearing cap bolts, slip them into engine oil and dry them with a cloth. For every main cap, put it on and turn the bolts only as tight as needed by hand. After that, tighten the main cap bolts in the proper order to 20 Nm and turn them 1/4 turn extra. Check crankshaft end play, install the connecting rods and measure clearance on the sides. Put in the windage tray, apply oil to its bolts and tighten them to 27 Nm + 1/4 turn. Tighten the main cap tie bolts to 28 Nm (250 in. lbs.), place the rear crankshaft oil seal retainer on top and set the oil seal in the retainer. Then, fit the oil pump assembly and fill the pump cavity with oil. Reenter the dowel pin into the crankshaft, set in the crankshaft sprocket and next install the camshaft sprockets and timing belt. Replace the timing belt cover, crankshaft vibration damper and idler pulley for the accessory drive belt. After the oil pump is up, fit the oil pickup tube and bolt it tight to 28 Nm (250 in. lbs.). Put in the oil pan, remount all the engine parts and oil the crankcase properly.