Detroit Diesel — Installation of Ring Gear
Repair & overhaul
From a Detroit Diesel service manual — check it applies to your exact model before use.
Before you start
- Do not heat the gear over 204°C (399°F); excessive heat may destroy the original heat treatment.
- Use lifting tools and heat-resistant gloves when handling heated components.
Procedure
- Support the flywheel, ring gear side up, on a solid flat surface.
- Rest the gear on a flat metal surface; heat the gear uniformly with an acetylene torch, keeping the torch moving.
- Use tongs to place the gear on the flywheel with the chamfer facing the same direction as the gear just removed.
- Tap the gear in place against the shoulder of the flywheel.
- If the gear cannot be tapped into place, remove it and apply additional heat.
- Once the ring gear is installed, install the flywheel.
- Install the transmission.
Tools required
Tool links are Amazon searches (affiliate links); manufacturer special tools may only be available from a dealer.
Specs & values
- Maximum ring gear heating temperature: 204°C (399°F)
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.