Mistal prop shaft greasing

[trav]

Had a look at greasing the prop shaft - could only find a grub screw. Is the proceedure to remove this and fit a grease nipple and if so any idea of the size ?
Can I get enough grease in just pressing the grease gun into the hole after removing the grub screw?

 

[ronypony]

Grease guns are designed to fit on a grease nipple and force grease under pressure into the UJ,ball joint,steering knuckle etc.
I doubt that you would be able to get the grease to wherever its supposed to go by simply squeezing grease into a hole m8.
I think your idea or removing the grub screw and replacing it with a grease nipple is the way to go.
Having said that I am wondering why the prop UJ's were not fitted with grease nipples as standard !
Are they sealed units ? I'm not sure. I looked in the Terrano manual for a lubrication schedule for prop, steering joints etc but couldn't find one :?

If you take the grub screw to any motor factor they shouls be able to match thread to grease nipple.

 

[trav]

Mistral prop shaft greasing

Thanks for the quick reply.
My local factor reconed he had not sold grease nipples for a decade but thats less than the age of the Mistral.
I thought the UJ might be nippleless to allow more flexibility !

 

[Toolbox]

Some Ujs are not grease-able but if you have a blank it wouldn’t hurt to fit a nipple and give them a pump of grease. Many people over grease Ujs, this can blow the seals out and leavening dirt get in and wear out the needle rollers.
I have seen sealed joints outlast over greased joints many times on other applications.

 

[ssteve]

1/4 unf or m6 thread .put grease in until crackling noise or seal starts to move a bit,sealed for life is rubbish,when it fails ,thats its life???????
some joints have a relief valve opposite the nipple to stop you blowing the seals out ,mainly on larger hardy spicers
ssteve 8O