Quote:
Originally Posted by michael cole
I too agree with your hypothesis that correct mating of the contact surfaces of the delivery valve would be needed to ensure fuel delivery pressure and timing.i would have assumed the copper crush washer would take care of this.but now im doubting.i do know if you over torque the delivery valve in an attempt to obtain a better seal you will risk distorting the aluminum IP housing.if this happens it may be impossible to get a good seal  |
(Please see FIG-11 only)- The sealing area that I was referring to is actually the area between the Delivery Valve Cone- item #3 and the Delivery Valve Support-item #5 with the sealing area being at item #4 which is a Steele metal to Steele metal contact (some what like a valve in the cylinder head except the spring pushes down on it instead of pulling it up.) The copper crush washer should not be touching the Delivery Valve cone and should be sealing item #1 and #5.
And, Yes over tightening can damage the aluminum pump housing.
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84 300D, 82 Volvo 244Gl Diesel
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