Lew,
Hardwood blocks or I use a selection of steel blocks for direct pressure, I doubt penetrating fluid will do anything on a block inside the ring from my experience's but you may need some heat and a bigger hydraulic jack.
Just double check for any spot welds ! you may need to shock it when its under pressure so buy a nice big copper lump hammer as this absorbs impact and does not bruise the steel component's.
Rob....................rnixartillery.
Last edited by rnixartillery; 27-07-19 at 20:58.
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