Perkins 900 Series — To set the engine to top dead centre (TDC)
Adjustments · Engine timing
For the Perkins 900 Series, from the Perkins service manual.
Applies to: Perkins 900 Series CP/CR engine
Procedure
- Remove rocker cover.
- Loosen atomiser clamp setscrews or gland nuts.
- Rotate crankshaft clockwise from front until inlet valve has just closed.
- Insert locking pin into hole below slot in backplate.
- Continue rotating crankshaft clockwise slowly until pin enters hole in flywheel.
- Engine is now set at TDC number 1 cylinder, compression stroke.
- Remove pin and fit rocker cover.
Tools required
- Locking pin for crankshaft 21836001 Amazon
Tool links are Amazon searches (affiliate links); manufacturer special tools may only be available from a dealer.
Specs & values
- TDC number 1 cylinder on compression stroke
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.