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Old 08-30-2014, 01:32 PM
Registered User
Join Date: Aug 2014
Posts: 13
1977 450 SL steering box leak

Ok... I think I know the answer here, but am hoping I will be pleasantly surprised.
The box is completely dry and working fine, except for a substantial leak at the steering shaft seal on top. No excessive play or any issues, just the leak at the top.
I have my full seal kit here on the branch, ready to go. The top bearing cap and all that came off very nicely. Now.... The big question:
Do I just do the bearing cap o-ring and input seal, or do I tackle the whole reseal job? Is it coming out of the top because of excessive pressure below, or should doing just the top seal fix it?
I know you are all going to say: you have it out already, do it all! But I really don't have time. Sure would be nice to press this seal in and be done.
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Old 09-01-2014, 06:04 PM
meltedpanda's Avatar
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Join Date: Mar 2003
Location: Central Ky
Posts: 6,086
Umm, you should so it all, am sure you have the step by step ( if not PM me)
However , you can try what you are thinking of doing, cant do any harm, and if it works , great , if not well then do the whole rebuild , good luck
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Old 09-22-2014, 01:21 PM
Tom McMenamin's Avatar
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Join Date: Aug 2001
Location: Orange Park Florida
Posts: 365
Power steering Box

Do the whole thing but first check the hoses coming in at the front of the box 2 of them and they tend to leak at hi milkeage.
1988 560SL
Black Pearl/Palamino
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