Johno Posted September 28, 2020 Report Share Posted September 28, 2020 Hi all, I've just opened up my diff to replace oil seals and output bearings as one is not silky smooth. The question is should a gasket compound be used for the diff casing and indeed the output flanges. I'm thinking not so far. Anyone got the full sp? Cheers Johno Link to comment Share on other sites More sharing options...
Colin Lindsay Posted September 28, 2020 Report Share Posted September 28, 2020 Never used one on the casing, but for the output flanges, where there is no gasket at all, a smear wouldn't hurt. Link to comment Share on other sites More sharing options...
Pete Lewis Posted September 28, 2020 Report Share Posted September 28, 2020 the main case split has gasket 114749 @55p the output have never show as having a gasket I recommend a smear of loctite 574 we did lots of tests for sealer back in the days of production and this stuff is bullet proof easy to use , and doesnt need a gasket on any hard faces not using a gasket on the front/ rear halves will upset the alignment of the short shafts to the diff carrier by the thickness of the gasket Pete Link to comment Share on other sites More sharing options...
Johno Posted September 28, 2020 Author Report Share Posted September 28, 2020 Pete hi you mention in another topic a different grade of oil for the diff. I can't find the topic now something to do with trunions. What grade makes for a quiet diff? Johno Link to comment Share on other sites More sharing options...
NonMember Posted September 29, 2020 Report Share Posted September 29, 2020 The standard diff oil spec is EP80 for a dry fill, EP90 for a top-up. Some people recommend EP140 for hard use, and this can also help quieten a noisy diff. Link to comment Share on other sites More sharing options...
Clive Posted September 29, 2020 Report Share Posted September 29, 2020 Worth mentioning the spec of the oil should be GL4 (unless you do some proper research and find a yellow metal safe GL5 oil) Moss sell a 85-140 oil that they claim can quieten a diff (with the caveat that it does not mean the diff has been fixed! but a diff with slight noise will stay that way for 1000's of miles) It is a GL5 spec, but clearly states it is yellow metal safe. Other such oils are available elsewhere. However, I have a bottle of this stuff waiting to go in my diff, when I get round to it! https://www.moss-europe.co.uk/dynolite-oils/dynolite-gear-oils/dynolite-no-noise-ep-85w-140-1-litre-ggl823310.html Link to comment Share on other sites More sharing options...
Colin Lindsay Posted September 29, 2020 Report Share Posted September 29, 2020 16 hours ago, Pete Lewis said: not using a gasket on the front/ rear halves will upset the alignment of the short shafts to the diff carrier by the thickness of the gasket Pete I never used a gasket SEALER. I don't mean I never used a gasket. Link to comment Share on other sites More sharing options...
Pete Lewis Posted September 29, 2020 Report Share Posted September 29, 2020 Colin not you just a thought for anyone not using a joint Pete Link to comment Share on other sites More sharing options...
Colin Lindsay Posted September 29, 2020 Report Share Posted September 29, 2020 I just read my initial post and thought... maybe it's a bit vague / ambiguous... I didn't want anyone thinking that 'as he doesn't use one, I can do it too!' Link to comment Share on other sites More sharing options...
Johno Posted September 29, 2020 Author Report Share Posted September 29, 2020 Had no intention of not using the gasket, just asking about compound. Link to comment Share on other sites More sharing options...
Iain T Posted September 29, 2020 Report Share Posted September 29, 2020 4 hours ago, Pete Lewis said: anyone not using a joint Pete I prefer alcohol🍻🥃🥂 Link to comment Share on other sites More sharing options...
Bordfunker Posted September 29, 2020 Report Share Posted September 29, 2020 I went with belt and braces. I used Loctite 5980 sealant. Anyones guess how it will hold though as it’s still sitting on the shelf awaiting completion of the chassis. Karl Link to comment Share on other sites More sharing options...
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