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