Spider Defects
OK Graham.
Thanks for the clarification above.
From what you say, and looking at the photograph in post 498192 it now seems that the spider is steel (cast or forged) [cast iron would be a real female dog to weld] and that it has been coated (galvanised) by the look of it. It also explains the rust streaks coming from the cracks. I am more convinced than ever now that they are cracks.
My theory about water getting behind the plug is now nullified.
My opinion now is that the spider is ‘toast’, trying to gouge out and weld up those fractures will likely ruin the alignment of the shaft to the spider and then the cost of recoating?
It appears that the spider is made up of four steel parts (cast or forged) welded together, 3 arms and a hub. I am not sure if the shaft, also of steel, is welded or shrunk into the hub at this stage, or even as 3beltwesty suggests, splined and then welded. I would be surprised if it were screwed and welded but at this stage it cannot be ruled out either.
As for Graham’s questions in post 498201
1. I would not reuse the spider.
2. I would not expect to get another 5 years from the spider. Added to which you will soon, in my opinion, start to get rust marks on your laundry, particularly the lighter items.
3. I think you do need to be concerned about the grooves in the seal landing. Assuming that the landing was initially flat (machining grooves like that and maintaining the tolerances for fit up so that the lips of the seal fitted exactly into those grooves would add, very significantly, to the cost of the machine [to no useful purpose in my view]) it would mean that a standard size seal would have less pressure on the lips to produce a seal than it was originally designed to exert.
OK Graham.
Thanks for the clarification above.
From what you say, and looking at the photograph in post 498192 it now seems that the spider is steel (cast or forged) [cast iron would be a real female dog to weld] and that it has been coated (galvanised) by the look of it. It also explains the rust streaks coming from the cracks. I am more convinced than ever now that they are cracks.
My theory about water getting behind the plug is now nullified.
My opinion now is that the spider is ‘toast’, trying to gouge out and weld up those fractures will likely ruin the alignment of the shaft to the spider and then the cost of recoating?
It appears that the spider is made up of four steel parts (cast or forged) welded together, 3 arms and a hub. I am not sure if the shaft, also of steel, is welded or shrunk into the hub at this stage, or even as 3beltwesty suggests, splined and then welded. I would be surprised if it were screwed and welded but at this stage it cannot be ruled out either.
As for Graham’s questions in post 498201
1. I would not reuse the spider.
2. I would not expect to get another 5 years from the spider. Added to which you will soon, in my opinion, start to get rust marks on your laundry, particularly the lighter items.
3. I think you do need to be concerned about the grooves in the seal landing. Assuming that the landing was initially flat (machining grooves like that and maintaining the tolerances for fit up so that the lips of the seal fitted exactly into those grooves would add, very significantly, to the cost of the machine [to no useful purpose in my view]) it would mean that a standard size seal would have less pressure on the lips to produce a seal than it was originally designed to exert.