mercury prop shaft removal

[nitro_rat]

Place the bottom of the jack on the prop shaft and the wood in between the ram and bottom of the planing plate and pump the jack up a little a then check the shaft. Keep repeating this until you straighten the shaft.

Is this an accepted way of straightening a prop shaft? Seems like the shaft should be removed to avoid damaging (brinelling) the bearings...

Either way, I think I’ll pass!

To straighten a shaft that has been removed is it done cold (with a press) or with heat?

[racervboat]

Remove it press no heat,of the couple hundred I have had done don't know of one that has failed.Fishing and rec motors.

[WillySteve]

Speaking of shafts, it's amazing just how malleable the Merc 1" shaft is.
Back in my Nitrous days I twisted splines on several shafts and never broke one. I did break a couple'a DS's at the top spline though. I've had a Fatshaft for 2 years and already lost a hub and prop due to the threaded nipple breaking off.....and NO Nitrous, just regular running!

[racervboat]

Yeah willy,a Volvo penta sx stearn drive propshaft is a hefty shaft but they bend like butter and have had many straightened you get a file even close to one and metal is coming off haha