Re: '56 Patrician Diff Pinion Seal
Posted by John Payne On 2012/6/25 2:56:54
Righto, time for that update I promised. My seal and bearing seller ordered seal #CR15788, which is what we agreed was right for the job, but what was delivered was a National #5778, which was also on the list of options. I was concerned that I might end up with some inferior Chinese made clone but according to the box, this seal was made in good old USA so that's all good, and it tells me that there are at least two seal numbers that will work downunder.
The next step was to remove the tailshaft yoke and then the old seal. With the help of an air tool, the yoke undid reasonably easily and with a tap or two, came right out. The seal was a different matter as it's hard to get behind to dislodge it. I decided to use a heavy duty screw driver and was starting to swear a bit when it shot out and nearly hit me in the eye. Turns out it's a Victor #49161 with somewhat brittle sealing material. Anyway, with some help from a large socket, the new seal went in although trying to keep it straight wasn't easy, but I think it's in pretty good now.
The yoke sealing surface looked a little shitty and I was contemplating fitting a speedi sleeve. That is, until I decided to clean it up and it looked good with no serious wear grooves, so I ditched that idea (see before and after photo's - sorry, the after isn't as clear). Refitting was harder than removal and I tightened it using a 2' breaker bar and socket. Trying to line up the marks I had put on the shaft, nut and yoke turned out to be a little difficult, made harder by lying on my back. I think I got it pretty right in the end, although the nut may be a fraction tighter than before. I reckon it would be less than 1/32" so hopefully that won't matter. I couldn't refit the tailshaft as I wanted to replace the bolts but forgot to buy them so will do that tomorrow. Regards, John
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The next step was to remove the tailshaft yoke and then the old seal. With the help of an air tool, the yoke undid reasonably easily and with a tap or two, came right out. The seal was a different matter as it's hard to get behind to dislodge it. I decided to use a heavy duty screw driver and was starting to swear a bit when it shot out and nearly hit me in the eye. Turns out it's a Victor #49161 with somewhat brittle sealing material. Anyway, with some help from a large socket, the new seal went in although trying to keep it straight wasn't easy, but I think it's in pretty good now.
The yoke sealing surface looked a little shitty and I was contemplating fitting a speedi sleeve. That is, until I decided to clean it up and it looked good with no serious wear grooves, so I ditched that idea (see before and after photo's - sorry, the after isn't as clear). Refitting was harder than removal and I tightened it using a 2' breaker bar and socket. Trying to line up the marks I had put on the shaft, nut and yoke turned out to be a little difficult, made harder by lying on my back. I think I got it pretty right in the end, although the nut may be a fraction tighter than before. I reckon it would be less than 1/32" so hopefully that won't matter. I couldn't refit the tailshaft as I wanted to replace the bolts but forgot to buy them so will do that tomorrow. Regards, John
Attach file:
(78.55 KB)
(42.75 KB)
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