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Fuel pump cooling shroud?
Recently we had to replace one of the mechanical fuel pumps on our Aztec due
to a leaking diaphragm. When talking to several A&P's about the expected life of these pumps and the cause of failure, most sited heat transfer from the accessory case to the pump and lack of cooling being the primary culprits. Some A&P's recommended turning the vac pump outlet to direct air onto the top of the pump, others said that the fuel flowing through the pump should cool it until you shut the engine down, then the pump absorbs the engine heat and cooks the rubber diaphragm. Not that it would help after engine shut down but I ran across this on ebay today... http://makeashorterlink.com/?T297322BD Does anybody in the group have such a shroud on their fuel pump? Aircraft Make/model? Thanks Jim |
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