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Gents,
I have been trying to get this bearing carrier out on my Yamaha for two days now. Shift rod is out, lower unit end cap is out, the two retaining bolts for the carrier are out. I started out with a flywheel puller against the shaft with eye bolts and chain around the carrier and heating the case with oxy - acetylene with no luck. After reading posts here, I am now pulling on the carrier while restraining the gearcase in concert with heat and a slide hammer in order to attempt to pull out the carrier and prop shaft as one. Still no luck. I am using enough pressure to start to straighten 1/2" eye bolts. My only other thought is I must not be getting the case hot enough. I am using enough O2 to get rid of the soot, but not enough to actually weld with; I am familiar with doing this to steel (car rear ends, etc.) but I am not sure how hot I can go without damaging the AL gear case. Also, thinking about fabricating an adaptor to connect my slide hammer directly to the prop shaft (read that here as well). so, three questions:
(1) how much heat is enough and for how long to get it apart without damaging anything (other than the paint)?
(2) The prop shaft looks, based on eyeballing it and running a tap through my prop nut to be 18MMx1.5 Can anyone confirm this?
(3) Any other suggestions or tricks from someone who has had a bunch of these apart before?
I'm deploying soon (less than a week) and I really don't want to let this thing sit for 7 months if I can help it. Thanks for any help you can offer. I have never had something this hard to get apart before.
I have been trying to get this bearing carrier out on my Yamaha for two days now. Shift rod is out, lower unit end cap is out, the two retaining bolts for the carrier are out. I started out with a flywheel puller against the shaft with eye bolts and chain around the carrier and heating the case with oxy - acetylene with no luck. After reading posts here, I am now pulling on the carrier while restraining the gearcase in concert with heat and a slide hammer in order to attempt to pull out the carrier and prop shaft as one. Still no luck. I am using enough pressure to start to straighten 1/2" eye bolts. My only other thought is I must not be getting the case hot enough. I am using enough O2 to get rid of the soot, but not enough to actually weld with; I am familiar with doing this to steel (car rear ends, etc.) but I am not sure how hot I can go without damaging the AL gear case. Also, thinking about fabricating an adaptor to connect my slide hammer directly to the prop shaft (read that here as well). so, three questions:
(1) how much heat is enough and for how long to get it apart without damaging anything (other than the paint)?
(2) The prop shaft looks, based on eyeballing it and running a tap through my prop nut to be 18MMx1.5 Can anyone confirm this?
(3) Any other suggestions or tricks from someone who has had a bunch of these apart before?
I'm deploying soon (less than a week) and I really don't want to let this thing sit for 7 months if I can help it. Thanks for any help you can offer. I have never had something this hard to get apart before.
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