deadstick Posted September 2, 2014 Share Posted September 2, 2014 Had an issue last week with the mechanical fuel pump on my J230-D, had a fuel fume smell in the cockpit on the last flight, next morning I went to pull the cowls but as I approached the A/C I noticed the tarmac had been eaten away near the nose wheel. So I pulled the cowls and found the fuel pump was leaking between the diaphragms and that the retaining screws were loose. Interestingly the screws have no form of locking! they have now ( LT 620) as I think an inflight fire would have been inevitable if I was on a longer flight the day before. Engine and pump have done a total of 35.4 hours. Anyway just sharing for info as its definitely something to check. (Defect report submitted) 2 Link to comment Share on other sites More sharing options...
biggles Posted September 2, 2014 Share Posted September 2, 2014 Had an issue last week with the mechanical fuel pump on my J230-D, had a fuel fume smell in the cockpit on the last flight, next morning I went to pull the cowls but as I approached the A/C I noticed the tarmac had been eaten away near the nose wheel.So I pulled the cowls and found the fuel pump was leaking between the diaphragms and that the retaining screws were loose. Interestingly the screws have no form of locking! they have now ( LT 620) as I think an inflight fire would have been inevitable if I was on a longer flight the day before. Engine and pump have done a total of 35.4 hours. Anyway just sharing for info as its definitely something to check. (Defect report submitted) Always pays to isolate the fuel to the engine when finished flying , although it did bring a serious defect to your attention . Bob Link to comment Share on other sites More sharing options...
deadstick Posted September 2, 2014 Author Share Posted September 2, 2014 Hi Bob, I know what your saying but I have this fear of missing the fuel cock on pre take off vitals! Just one less routine change and hole in the cheese. Link to comment Share on other sites More sharing options...
biggles Posted September 2, 2014 Share Posted September 2, 2014 Hi Bob, I know what your saying but I have this fear of missing the fuel **** on pre take off vitals! Just one less routine change and hole in the cheese. Something like this will help to allay that fear . It reads ... " Fuel cxcks ( 3 off ) - OPEN " Bob 1 Link to comment Share on other sites More sharing options...
skeptic36 Posted September 3, 2014 Share Posted September 3, 2014 Something like this will help to allay that fear . It reads ... " Fuel cxcks ( 3 off ) - OPEN " Bob [ATTACH=full]31808[/ATTACH] Bob, Bob, Bob........didn't your mother tell you to undo your shoe laces before you take them off 2 Link to comment Share on other sites More sharing options...
deadstick Posted September 3, 2014 Author Share Posted September 3, 2014 Hmmm, I have been leaving the fuel cock on in my jabs since day one, in fact every school I know that has one does so. I know what your saying bob and I always use a checklist for the PTVA's but my routine is what it is and it has to date served me well including showing this defect. I have no reason to change my practice of leaving it on however other aircraft that I have flown it is part of the post shutdown checklist to turn the fuel cock off but it isn't in this type. Thanks for the pointer alete same. 1 Link to comment Share on other sites More sharing options...
dazza 38 Posted September 3, 2014 Share Posted September 3, 2014 Turning the fuel cocks/ taps off is good practise. That is no excuse for the mechanical fuel pump leaking. 1 Link to comment Share on other sites More sharing options...
biggles Posted September 3, 2014 Share Posted September 3, 2014 Bob, Bob, Bob........didn't your mother tell you to undo your shoe laces before you take them off Having a quite day Bill ? Must admit it wasn't a really good look , but my wife does insist that I store them away neatly , which of course includes the laces being tied . Anyway , here's the other side showing a reasonable ground speed also, which I'm sure you will rightly agree is due to good flight planning . Bob Link to comment Share on other sites More sharing options...
David Isaac Posted September 4, 2014 Share Posted September 4, 2014 And a good tailwind component ...LOL 1 Link to comment Share on other sites More sharing options...
dlegg Posted September 4, 2014 Share Posted September 4, 2014 Before shutting down engine last time of day I always shut off fuel valve and let carby run out shutting down engine. Keeps all fwf lines and carby bowl dry but also ensures I have to turn on valve and check elect pump to start engine next time. Checks my fuel valve, flow meter and fuel pressure before starting. 1 Link to comment Share on other sites More sharing options...
AVOCET Posted September 4, 2014 Share Posted September 4, 2014 I had the same issue with the fuel seepage on the mechanical pump on 3300 jab engine Nothing that a good shakedown check wouldn't find . Its good practice to have nuts & bolts , screws checked after the first few flights flights and so on ,for ever more ........ Mike Link to comment Share on other sites More sharing options...
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