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John Deere — Install Crankshaft

Repair & overhaul · Crankshaft, main bearings and flywheel

From a John Deere service manual — check it applies to your exact model before use.

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Before you start

  • Do not use pneumatic wrench to install main bearing cap screws.

Procedure

  1. Position crankshaft onto main bearing inserts using a hoist and lift sling.
  2. Dip entire main bearing cap screws in clean engine oil.
  3. Install each bearing cap, bearings, and cap screws with washer.
  4. Align upper and lower thrust flanges on main thrust bearings.
  5. Tighten Nos. 1, 2, 3, 4, 6, 7 main bearing cap screws to 68 N·m (50 lb-ft).
  6. Hand-tighten No. 5 main thrust bearing cap screws.
  7. Gently pry crankshaft rearward then forward to align thrust washers on No. 5.
  8. Tighten No. 5 main thrust bearing cap screws to 68 N·m (50 lb-ft).
  9. Tighten all main bearing cap screws to 203 N·m (150 lb-ft).
  10. Turn crankshaft by hand to check for easy rotation.

Tools required

Tool links are Amazon searches (affiliate links); manufacturer special tools may only be available from a dealer.

Specs & values

  • Main bearing cap screws final 203 N·m (150 lb-ft)

Source: John Deere service manual. Steps and values are as documented; always cross-check against the official manual and any later revisions for your exact serial number before servicing.

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