John Deere — Replace Flywheel Ring Gear
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
- Oil fumes or oil can ignite above 193°C (380°F). Use a thermometer and do not exceed 182°C (360°F). Do not overheat; overheating may destroy original heat treatment of gear.
Procedure
- If ring gear is damaged, place the flywheel on a solid flat surface.
- Remove ring gear with a brass drift and hammer.
- Heat new ring gear to 148°C (300°F) using heated oil, oven heat, or flame heat.
- Install ring gear against shoulder of flywheel so chamfered side is on engine side of flywheel.
Tools required
Tool links are Amazon searches (affiliate links); manufacturer special tools may only be available from a dealer.
Specs & values
- Ring gear heated to 148°C (300°F)
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.