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Main & Connecting Rod Bearings: Installation

  1. Fit 5 upper main bearings to cylinder block with oil grooved surface facing crankshaft thrust side. Fit new oil seal at rear of crankshaft. Insert side seals on both sides of rear bearing cap. Install main bearing caps. No. 1 through No. 4 bearing caps are marked for correct installation. No. 5 may or may not be indexed.
  2. Insert connecting rod assembly into cylinder as previously described. Fit upper bearing to rod and over crankshaft. Fit lower bearing to rod cap and install cap. Tighten all bolts to specifications.
    NOTE: Ensure engine is free to turn.
  3. End play is compensated for by thrust washers placed at No. 5 main bearing. Check crankshaft end play using a dial indicator. End play must not exceed 0.012" (0.305 mm). If specification is exceeded, thrust washers must be replaced. Thrust washers are available in 0.010" (0.25 mm) 0.020" (0.50 mm) and 0.030" (0.75 mm) oversizes.
  4. Compress camshaft tensioner slipper fully into tensioner body. Install tool (49 1975 260 for 1415 cc and 49 0660 260 for 1970 cc engines) to retain slipper and install tensioner assembly to cylinder block. On 1970 cc engines, install chain vibration damper and tighten screws. Install chain guide strip, but do not tighten screws at this time. Install oil deflector and seal in front cover. Install oil thrower on crankshaft with the edge facing forward.
  5. On all engines, fill oil seal lip with grease and install front cover. Install oil pan and gasket. Position camshaft sprocket and chain on top of the chain guide strip and chain vibration damper. Install gasket and cylinder head on block.
    NOTE: Ensure matching marks of chain and sprockets are aligned.
  6. Install camshaft and bearings in cylinder head. Install rocker arm assembly. Position rocker arms 0.040" (1 mm) off center of valve stems and tighten cylinder head bolts. Turn crankshaft slightly in the direction of rotation. Press top of chain guide strip with a lever through opening in cylinder head, then tighten guide attaching screws through holes in front cover. Remove tool from tensioner and tension will be properly set. Install remaining components in reverse order of removal procedure.
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