ResinRocket Posted September 1, 2010 Share Posted September 1, 2010 What kind of grease should I use for the rear trunnions?Am I right in thinking that the grease actually goes into the hub bearings? When I looked at the trunnion / bearing housing there seems to be a port going between the trunnion casing and the bearing housing.If so, I'm assuming I need some sort of Lithium grease? Link to comment Share on other sites More sharing options...
Pete Lewis Posted September 1, 2010 Share Posted September 1, 2010 thats correct any LHM is OK for the bearings Pete Link to comment Share on other sites More sharing options...
ResinRocket Posted September 1, 2010 Author Share Posted September 1, 2010 Great stuff, thanks! :) Link to comment Share on other sites More sharing options...
sparky_spit Posted September 1, 2010 Share Posted September 1, 2010 And is there a port between the bearing housing and trunnion? Link to comment Share on other sites More sharing options...
ResinRocket Posted September 1, 2010 Author Share Posted September 1, 2010 I'm starting to doubt myself on that now... I'll have to go and have a look at a trunnion housing tomorrow. Thinking about it, it doesn't make sense that the nylon trunnions would require lubrication whereas the front trunnion bushes don't (the oil just lubricates the threaded bit). Maybe what I saw was the port from the grease nipple to the bearing housing... that would make more sense! ;D Link to comment Share on other sites More sharing options...
Deleted User Posted September 1, 2010 Share Posted September 1, 2010 The grease point on the read trunion/bearing housing is for greasing the bearing, not the trunion.It is always a good idea to grease the trunion when assembling it - to stop the bolt corroding in the metal sleeve and making it impossible to get apart without cutting the bolt.The grease that is needed for greasing the bolt / sleeve is a good water repellant grease that will not wash out / off easilly.Most people would recommend Copaslip, for this application, but I would not - it is not particularly water repellant and will wash out easilly and the corrosion will start.Many years ago I was involved in research to find a suitable grease for a mechanism similar in function to a trunion, that was to be regularly used in wet conditions with minimal maintenance. We tested samples of many commercially available greases in a representative mechanism that was then subject to washing and hosing down at regular intervals and then exercised as per its normal function. The majority of greases tested failed after a few days testing, some lasted weeks, and only one lasted properly, and that was Molykote Longterm W2 - which is what I would recommend for this application - I use it on my own car, and grease all bolts that go through sleeves, and I have never had one sieze due to corrosion following grease washout. Link to comment Share on other sites More sharing options...
100+ Posted September 1, 2010 Share Posted September 1, 2010 That's a good tip! Link to comment Share on other sites More sharing options...
junkuser Posted September 2, 2010 Share Posted September 2, 2010 "I have never had one sieze due to corrosion following grease washout."Sounds a worthwhile product to consider. Over what period of time would that be Kevin? Link to comment Share on other sites More sharing options...
Pete Lewis Posted September 3, 2010 Share Posted September 3, 2010 Ive seen more seized ones than easy ones ,so good advice Kevin just off to search a supplier for a tin Pete Link to comment Share on other sites More sharing options...
Deleted User Posted September 3, 2010 Share Posted September 3, 2010 The very stuff... Molykote Longterm W2 High Performance Grease, 400g, £5.57http://www.univarsc.com/lubricants&P.Size=173 Link to comment Share on other sites More sharing options...
ResinRocket Posted September 3, 2010 Author Share Posted September 3, 2010 Interesting about the anti-seize grease - I usually use Copaslip but will consider the Molykote stuff. I had another look at the bearing housing and the port is just from the grease nipple (makes more sense). Link to comment Share on other sites More sharing options...
Deleted User Posted September 3, 2010 Share Posted September 3, 2010 A lot of people use Copaslip, but it has no lubricating properties and yet get fretting corrosion if the parts are moving. Link to comment Share on other sites More sharing options...
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