valve cone

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I have a ford zetec engine that I am using for training and one of the students have lost one of the halves of the cone that holds the valve spring in place and we need to put the engine back together. I was wondering whether there was something I could use to improvise

Sep 27th, 2013
. Device for automated assembling of cone half-bits on a valve of an internal combustion engine, said valve being of the type comprising a mushroom-shaped body including a stem on whose free end a cup element is to be secured having a conical inner surface tapering towards the mushroom-shaped head of the valve and an outer annular flange for abutment of one or more helical return springs for the valve, said cup element being secured on said end of the stem of the valve with the interposition of an annular body having an outer conical surface also tapering towards the mushroom-shaped head of the valve, defined by two cone half-bits which are freely in contact with each other at a plane containing the axis of said annular body, said cone half-bits defining, in their assembled condition, one or more circumferential inner ribs which engage cooperating circumferential grooves provided on said end of the stem of the valve, said device comprising means for mounting said cone half-bits by causing them to slide on the stem of the valve while holding them in a diverging condition, with their ends of lower diameter spaced apart from each other, said means including a tubular body adapted to be moved along an axis coincident with the axis of the stem of the valve and adapted to engage the annular flange of the cup element, said tubular body being provided with a plurality of jaws which are elastically deflectable outwardly in a radial direction, said jaws having inner inclined surfaces diverging from each other towards the mushroom-shaped head of the valve and adapted to engage the end surfaces of greater diameter of the two cone half-bits, said device further including a pushing rod slidably mounted within the tubular body and ending with a tip which is for cooperating with a sleeve for holding the two cone half-bits in the said diverging position until they reach their assembling position on the stem, wherein said pushing rod is slidably mounted within said sleeve defined by a plurality of longitudinal petals which are elastically deflectable outwardly in a radial direction due to the engagement of said pushing rod within an end conical portion of an inner passage defined between said petals to engage and hold said two cone half-bits in a diverging condition.
Sep 27th, 2013

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Sep 27th, 2013
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Sep 27th, 2013
Mar 1st, 2017
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