Perkins 900 Series — To check the timing of pin-timed fuel injection pumps
Testing & diagnosis · Fuel system
For the Perkins 900 Series, from the Perkins service manual.
Applies to: Perkins 900 Series CP/CR engine
Procedure
- Remove cover for fuel injection pump gear.
- Set piston of number 1 cylinder to TDC on compression stroke.
- Insert timing pin through slot in fuel pump gear and hole in hub.
- Push pin fully into recess in body of fuel pump; if fully inserted timing is correct.
- If timing pin cannot be pushed into pump body, check engine is correctly set at TDC.
- If engine set correctly but pin does not fit, fuel pump must be removed and set by specialist.
- Remove timing pin and fit gear cover.
Tools required
Tool links are Amazon searches (affiliate links); manufacturer special tools may only be available from a dealer.
Specs & values
- TDC number 1 cylinder compression stroke
- No resistance when pin inserted
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.