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Crankshaft & Main Bearings

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  1. Ensure crankshaft end play is within specification. See CRANKSHAFT, MAIN & CONNECTING ROD BEARINGS  table under ENGINE SPECIFICATIONS. Install main bearing shells with oil holes aligned with oil holes in block and tabs seated in block tab slots.
    CAUTION: DO NOT allow oil on bedplate mating surface. Oil will adversely effect ability of sealer to seal bedplate to cylinder block.
  2. Using fresh, clean oil, lubricate bearings and crankshaft journals and install crankshaft. Apply .059-.078" (1.5-2 mm) bead of anaerobic sealer to cylinder block. See Fig 1.
    CAUTION: Use only Anaerobic Sealer (4773257) on bedplate or damage to engine may occur.
  3. Install lower main bearings into main bearing cap/bedplate. Ensure bearing tabs are seated into bedplate slots. Install main bearing cap/bedplate onto engine. Clean and oil main bearing bolts before installation. Install main bearing bolts No. 11, 17 and 20 finger tight. Tighten these bolts together until bedplate uniformly contacts cylinder block. Tighten bolts No. 11, 17 and 20 to 20 ft. lbs. (27 N.m). See Fig 2.
  4. Install main bearing bolts No. 1-10 and tighten in sequence to 30 ft. lbs. (41 N.m). See Fig 2. Install main bearing bolts No. 11-20 and tighten in sequence to 20 ft. lbs. (28 N.m). See Fig 2. After main bearing bedplate is installed, check crankshaft turning torque. Turning torque should not exceed 50 INCH lbs. (5.6 N.m).
Fig 1: Applying Sealant
G95G14783Courtesy of CHRYSLER CORP.
Fig 2: Installing Main Bearing Bolts
G95H14784Courtesy of CHRYSLER CORP.
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