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After a cold flight yesterday my C337A has come down with a runny nose (boost pump overflow drip). I can't add much to the previous posts on this topic but... Repair or replace options now seem to be: Dukes overhaul at $1350 + $600 core, McFarlane (CJ Aviation) at $975 + $50 core or Weldon at $925 + $100 core. As previously discussed the McFarlane & Weldon pumps do not have the A thru D models included on their applicability lists. I'm just wondering if anyone has actually installed one of the non-Dukes options with the blessing of an IA or if everyone has eventually opted for the Dukes overhaul. It just seems crazy to pay $425 additional for an "overhaul" that no doubt reuses the same motor, housing, head casting, etc. such that all one is actually receiving is a reseal than to buy all new just to satisfy some obscure paperwork when all of the part numbers are interchangeable. I'm leaning towards the Weldon pump but if anyone has any experience with that solution I'd be grateful for your hard earned experience report. Or any further thoughts on the matter from others.
Thanks, Steve G.
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03-04-25, 06:49 PM
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