4020 injector pump

davida

Member
My 4020 is starting to try to run away until I cut the throttle back down to kill the engine.

I have read about a governor ring or some plastic part in just under the cover that could correct this without have to have the entire pump rebuilt.

If this is the case where can I get the part along with a seal kit?

This will not be my first time resealing an injector pump, just the first time for a Roosa Master.

Thank you for any help.
 
I buy all my pump parts from US Diesel. They sell OEM Stanadyne and Spaco aftermarket. They sell and ship to anyone. These are the prices I paid around a year ago. May of gone up.

www.usdiesel.com US Diesel in Fort Worth Texas is a dealer and will ship. 800-328-0037.

JDB seal kit - Stanadyne # 24371 - Spaco U24371 $12.10

JDB pilot tube - Stanadyne # 16320 - Spaco U16320 $4.83

JDB pump vanes - kit 20803 - Spaco 09528
 

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