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Allis Chalmers Discussion Forum
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WD45 oil seals

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C.Terry

06-08-2006 18:28:17




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I need to replace front oil seal on wd45. Can someone tell me what it involves. Do I need to take the radiator off? The time cover? Also the back seal has just small leak? Can I replace half the seal and get by or should I just leave it alone. I do not want to take engine out. Thank you to anyone that can give me some advice on this.




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JMS/MN

06-09-2006 07:17:50




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 Re: WD45 oil seals in reply to C.Terry, 06-08-2006 18:28:17  
Take off the radiator and the crankshaft pulley. Remove the timing cover, install the seal in the cover, and when replacing the cover, center it on the crankshaft as best you can before tightening the bolts. Regarding the rear seal, replacing the lower half would work if that's where the leak is. Some years ago someone had pix of how he replaced the upper half by fishing a wire around the crankshaft and pulling the seal through, using plastic strips on each side of the seal. Strips allowed the seal to pass without binding.

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BCnT

06-09-2006 11:01:50




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 Re: WD45 oil seals in reply to JMS/MN, 06-09-2006 07:17:50  
i've never seen a 45 rear main so excuse me if this doesnt apply.
when i replace a 2 piece automotive rear main seal i loosen up all the main bearings so crankshaft drops about 1/4''...then grab old seal with a pair of needle nose pliers and pull it out...grease new seal with white lithium assembly lube and slide it in block...make sure seal is centered and torque main caps to specs...install rear main cap last...sometimes seal is too long and it needs to be trimmed.

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