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  • Bosch VP44 Injection Pump Diaphragm?

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    Mopar1973Man

    Just to kill off the whole Bosch VP44 diaphragm failures and voiding of warranties. This diaphragm is out of a Revision 027 pump. As you'll see it's a harden steel plate with plastic on the inside holding a o-ring seal. 

     

    Here is the inside of the diaphragm and the o-ring seal.

    DSCF6189.JPG

     

    This is the top cover of the diaphragm. This steel plate is harden steel and held in place with a snap ring. 

     

    DSCF6190.JPG

     

    Looking through the hole and you can see the plastic and steel sandwich.

     

    DSCF6192.JPG



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