Dynojet Air Fuel Ratio Module - Manual (Page 24)

Air Fuel Ratio Module Installation and User Guide
C H A P T E R 2
Air Pump Maintenance and Troubleshooting
2-14
6 Mark the orientation of the valve plate with the pump head before removing the
valve plate.
You may also use the letters on the top of the pump head to ensure correct
orientation.
Note: The valve plate must be re-installed correctly or the pump will not function
properly.
7 Remove the four No. 2 phillips head screws securing the valve plate and remove
the plate.
Note: If you need to pry the valve plate from the pump head, be sure not to
scratch or damage the plate. You will need to replace the valve plate
(P/N 21299105) if damaged.
Figure 2-15: Mark and Remove Valve Plate
valve plate
mark orientation
pump head
valve plate
gasket
pump head
inlet labeled B
outlet labeled A
inlet labeled B
outlet labeled A