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Fordson Tractors Discussion Forum

Re: Simms pump on Nuffield

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Author  [Modern View]
MF Pain

01-03-2014 23:55:29
116.250.218.51



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Hi all,
Well I think I have found the problem - it looks as though the coupling on the injector pump drive slipped when the engine over revved. Apart from resetting the timing I have not as yet reassembled and tested. A pic of the timing cover removed to remind me how much more work I have done than was needed. Photo 1 (if I get them in the right order) shows the fresher paint on the coupling that alerted me to it when I finally saw it. Photo 2 shows the position of the pump timing when the crankshaft is at 28deg BTDC (correct position when marks on pump and drive should be aligned). Before resetting the pump timing I aligned the marks on the pump and the drive and checked the crankshaft position - it was about 10deg past TDC - no wonder it wasn't firing and only pouring out white smoke.
Thanks for all the help offered.

Bill
[URL=http://s927.photobucket.com/user/bnfrogers/media/Nuffield_pump_timing_zps26585eb9.jpg.html][/URL]

[URL=http://s927.photobucket.com/user/bnfrogers/media/Nuffield_pump_timing_2_zpse6c8a95a.jpg.html][/URL]

[URL=http://s927.photobucket.com/user/bnfrogers/media/Nuffield_timing_chain_zpsacfed293.jpg.html][/URL]

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