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FSM Simms injector pump

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Simon D

06-02-2001 09:16:49




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I have just renovated a 1961 FSM, on its first test drive to see if I could shake any bolts loose the injector pump started to squeek. The sound was what you would expect if cams were operating with no lubrication.

The manual that I have for the tractor shows two injector pumps one Simms and one Minemec which was the later pump for newer FSM. My Simms pump is different to that depicted and does not have the filling hole for oil in the middle of the cover. My question therefore is has anyone any ideas what this noise is and how should it be rectified?

To stop the noise we have sqirted some oil into the breather tube hole on the pump, this seemed to work but as it is so low on the pump I do not think much oil went in, and I really want to get to bottom of the problem.

Many Thanks

Simon

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Brian

06-03-2001 01:22:36




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 Re: FSM Simms injector pump in reply to Simon D, 06-02-2001 09:16:49  
Simon,
Your pump should have two pipes going to the inlet manifold if it is the early pump. If it is, this pump requires no oil unless the pump has been reconditioned or the cam box drained. Remove the eight bolts in the side plate and fill with 1/8th pint of engine oil. Diesel is allowed into the cam box and will lubricate then for the life of the pump.
If it is a minimec, on the top of the governor housing is a 1"AF spanner size plug, half way down the governor housing is a 1/2"AF spanner size plug and on the bottom of the governor housing is another 1/2" AF plug. Remove the top plug and the middle one. Oil should come out of the middle one,if not, remove the bottom one and drain the pump. Replace the bottom plug and fill from the large one at the top until oil comes out of the middle one. Then refit the plugs. Change the oil in here every time you change the engine oil.
The other area of "sqeak" might be a too tight or dry drive coupling.
regards
Brian

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