When you do the Delivery Valve: O-Ring,Washer,Spring replacement task...

7K and 7G have established a "Lapped" relationship to each other due to
friction over a long period of time.IF AT ALL POSSIBLE they should not
ROTATE in relation to their original position.

ALSO, 7G has the same "Lapped" relationship to the portion of the I.P. in
which it sits...AND should not be ROTATED in relationship to the axis of
the pump.

(And the third and final portion of the "Hat Trick"... 7I the spring should be
replaced at the same time.)

The components may wear into a new "Lapped" relationship over time as they
did originally.

AND the only warning the FSM gives you is "note position".

Attached Thumbnails

 

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'84 300SD sold
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