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Spitfire 1500 trunnions


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Oiling the trunnions (kingpins), one side takes the oil nicely, and I can see oil oozing out. The other seems very reluctant, and i am not convinced oil is going where it should. I've had the nipple out, and that is clear.

Is there a hole that should be lined up somewhere, or some other reason? Help appreciated. 

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There is nothing to line up it could be its had grease put in at some time and this has blocked the oilway 

There is a hole runs from the grease nipple down te centre of the upright thread this fills the trunnion to make it a oil bath

Try some good hard pumping may get some trhough  failing that you need to remove the runnion and clean it all out

Oiling should be done with the car jackrd to remove load from the trunions ...thats wortha thought 

Pete

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I have one oiled trunnion and one greased - the latter thanks to a certain Triumph specialist who replaced the previously oiled one following an MOT advisory. Tried the jacking trick, but it won't take any oil to push the grease out - just spurts out around the nipple. Warming didn't help either. Rather frustrating to be faced with disassembly to overcome a supposed professional's foul up. For the record, their view is that modern graphite greases maintain their performance under pressure and are therefore a better solution - and I'm not trying to reopen that debate!

Makes me consider going trunnion-less if I have to take it all apart anyway!

Gully

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im not sure how trunionless sphericals seal against the arduos rigours of ever day road dirt and  mileges wasnt the  initial design was for race  not road  theres a different longevity 

Its all down to preference   or love em or hate em 

When the winter bug goes i may think the opposite 

Pete

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7 hours ago, dougbgt6 said:

Gully, 

I recommend the club shop grease gun, It's ENORMOUS! Must be 3" diameter and 2ft long. Consequently it has a better than average output pressure, it'll put oil in anything, resistance is futile!

Doug

I'll think I'll stick to my tried and tested Wanner gun thanks - has never failed on anything in the past. The upside is that I'm confident the offending trunnion really is packed with graphite grease!

Gully

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Gully,

I laughed out loud when I re-joined the club after 30 years and received  my first Courier. It had an article by a professor of mechanical engineering explaining why grease is now OK, still the same old argument! My understanding is that the trunions, Bronze (?) prefer oil to grease, no mater how good the grease is.

Doug

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The problem with grease is that it does not move. It will only lubricate with what it is in contact at the time, conversely oil being more fluid gets in to "every corner" and keeps doing so.

Considering the motion of trunnion's, it is only oil that can deliver the lubricating requirement.

With regard to the professor, a certain quote by George Bernard Shaw springs to mind: "those who can do and those who cannot, teach" - it is obvious the professor never owned a vehicle with trunnion's !!! ;) 

Regards.

Richard.

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On 1/18/2018 at 10:36 PM, Gully said:

I have one oiled trunnion and one greased - the latter thanks to a certain Triumph specialist who replaced the previously oiled one following an MOT advisory. Tried the jacking trick, but it won't take any oil to push the grease out - just spurts out around the nipple. Warming didn't help either. Rather frustrating to be faced with disassembly to overcome a supposed professional's foul up. For the record, their view is that modern graphite greases maintain their performance under pressure and are therefore a better solution - and I'm not trying to reopen that debate!

Makes me consider going trunnion-less if I have to take it all apart anyway!

Gully

See

eBay item number:
273035218754
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