Perkins 1106 — Flywheel - Install
Repair & overhaul
For the Perkins 1106, from the Perkins service manual.
Applies to: Perkins 1106, Perkins 1106D engine
Before you start
- Always wear protective gloves when handling heated parts
Procedure
- If ring gear removed, identify tooth orientation; chamfered side toward starting motor.
- Heat flywheel ring gear in oven to max 250 °C; do not use a torch.
- Quickly install ring gear onto flywheel.
- Inspect crankshaft rear seal for leaks; replace if needed.
- Attach lifting device to flywheel (approx 70.6 kg).
- Install guide studs in position on the crankshaft.
- Position flywheel onto guide studs.
- Install pilot bearing and bolts if necessary.
- Install flywheel bolts; remove guide studs; install remaining bolts.
- Prevent flywheel rotation; tighten bolts to 120 N·m.
- Remove lifting device and check flywheel run out.
Tools required
- Guide Stud (1/2 inch - 20 UNF by 4 inch) Amazon
Tool links are Amazon searches (affiliate links); manufacturer special tools may only be available from a dealer.
Specs & values
- 120 N·m (88 lb ft) flywheel bolts
- ring gear max 250 °C
- flywheel weight approx 70.6 kg (155.6 lb)
Full service-parts list: Perkins 1106 →, Perkins 1106D engine →
Source: Perkins 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.