Perkins 1103 / 1104 — Flywheel - Inspect
Maintenance
For the Perkins 1103 / 1104, from the Perkins service manual.
Applies to: Perkins 1103, Perkins 1104, Perkins 1104 (1103 also covered) engine
Before you start
- Keep the crankshaft pressed toward the front of the engine during the face alignment check.
Procedure
- Install the dial indicator and set the pointer to 0 mm (0 inch).
- Turn the flywheel and read the dial indicator every 90 degrees.
- Calculate the difference between the lowest and highest of the four measurements.
- For face alignment the difference must not exceed 0.03 mm (0.001 inch) for every 25 mm (1.0 inch) of flywheel radius.
- For runout the difference must not exceed 0.30 mm (0.012 inch).
Tools required
- Dial indicator Amazon
Tool links are Amazon searches (affiliate links); manufacturer special tools may only be available from a dealer.
Specs & values
- Flywheel face alignment 0.03 mm (0.001 inch) per 25 mm radius.
- Flywheel runout 0.30 mm (0.012 inch).
Full service-parts list: Perkins 1103 →, Perkins 1104 →
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.