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Delivery valve seal rings
Quote:
Originally Posted by theo3000
I went to 2 hardware and 2 auto supply stores today, and none of them had the correct size. I asked for 10x14x1.0. Does that sound right?
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D-valve seal rings on 123 series MW pumps are made from a 0.50mm precision annealed copper shim and may only be used once. The correct size is 14Ø x 10 x 0.50mm only available from a Bosch agency. Only by using the correct part will the lapped faces between the D-valve and pipe connection be kept parralel to seal at 40-50nm in a single step. Overtightening can distort the pump body and cause rack to stick. NEVER re-use or use a substitute.
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Beagle
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