thank you all
for the comments! i don't work on more than one or two appliances a year anymore, when i first joined on here in 2008 i was a maniac! chasing down every kitchenaid and frigidaire rollermatic i could find! luckily i got that out of my system! now it's fun to work on one every six months or so!
blackstone, thanks for the tip on those bolts. i will check into it.
beekeeknee, i have been using rustoleum rusty metal primer on all my dishwashers and the 3 rollermatics i have restored, and any other washer! i just automatically coat the outer tub with it and the underside of all my dishwasher restorations. i usually give em 3 coats plus a couple coats of rustoleum paint.
the 3 rollermatics i finished had outer tubs with some rusty areas inside so i coated the insides of those outer tubs with about 5 coats of that primer. i did the same with my 1-18 then painted the entire outer tub bright red and green! i have never used jb weld (yet). i just figure if it's metal and can rust it gets a coat of primer! i have heard of por-15 and it was suggested that i use it on my one rollermatic that had a really badly rusted outer tub. but i did not.
we also sell at work (home depot) a can of plastic rubber coating you spray on, supposedly water proof for use in gutter seams. when i dig into my next rollermatic that's patently waiting for me in my appliance room i thought i would try coating the inside of the outer tub with it. especially on the bottom and up where the transmission bolts on to the tub. probably tackle it this winter.
i also find that the bottom of kitchenaid dishwasher tubs tend to rust in the older models so i always use the primer on the outside of them.
as for which is better, i would think jb weld would be could to repair holes, cracks and build up an area where RMP would be best suited as a general coating to prevent rust on any metal area exposed to moisture.
lotsosudz, i would love to post a video here but have no idea how to upload it to this thread? i can do pics, but never learned how to do the videos.
mickeyd, think that bladder holds about a gallon, it's about 16" tall and not very thick, 3,4 inches maybe, it is curved to wrap around corner of outer tub. it is a unique system, slowly filling up just as the wash tub does and triggering the variable level fill switch mounted on the control panel.
paul, thanks as always, i have had good luck making pullers out of wood and bolts and chain. simple to construct, cheap to make, take em apart when your done!