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Ken Biggs
04-11-2005 15:01:07
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Re: MM335U 1957 Hydraulic Lift in reply to JK2, 04-06-2005 05:56:03
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John, Update, No power steering , no tele-flo, The pump was repaired and all seals were replaced about a year ago, the lift problem was there after repairs ,however I believe a small oil leak has developed since then in that area.
There was no change when the other two levers were moved with the 3pt in the lift position.
I installed a pressure guage and moved the levers rearwards one at a time , but did not get the required 1200psi , the needle would raise to just under 1000 , probably due to leak , after that the pressure would fall fairly rapidly , relief valve opening, and hold at about 200psi at thatpoint the lift would remain stationary ,depending on position of the lever , no drift.
This was when I figured the hyd pump was not developing enough pressure , the springs on the end of the accelerator arm which attach to the governor lever have stretched and the stop on that arm was not allowing further revs I manually increased the revs and the lift raised .
The lift pressure on the hyd oil gauge remained the same.
This is the old type hyd system and sometimes the I&T book does not fully explain and is mixed up with the later tele-flo and p/s.
It does have the auxillary levers and ports for implements.
I think I should be looking at a hotter spark plug , some oil deposits , but not wanting to do any engine stuff right now. Could you advise a spark plug name, type and number . Thanks for your help.
Ken Biggs.
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