Detroit Diesel — Install Ring Gear
Repair & overhaul · Flywheel
From a Detroit Diesel service manual — check it applies to your exact model before use.
Before you start
- Do not, under any circumstances, heat the gear over 400°F (204°C); excessive heat may destroy the original heat treatment.
Procedure
- Support the flywheel, ring gear side up, on a solid flat surface.
- Rest the ring gear on a flat metal surface and heat it uniformly with an acetylene torch, keeping the torch moving to avoid hot spots.
- Use tongs to place the gear on the flywheel with the chamfer facing the same direction as on the gear just removed.
- Tap the gear in place against the shoulder on the flywheel.
Tools required
Tool links are Amazon searches (affiliate links); manufacturer special tools may only be available from a dealer.
Specs & values
- Do not heat the gear over 400°F (204°C)
Source: Detroit Diesel 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.