Grease fitting
Thread Starter
Burning Brakes
Joined: Aug 2006
Posts: 1,147
Likes: 18
From: Thompsons Station Tennessee
Grease fitting
I noticed a strip of black goo on my left rear wheel on my 2008. I pulled the wheel off and could see nothing leaking? I greased the fitting on the rear linkage and when I pulled the grease gun off, there was a steady stream of grease running out of the fitting.
I took the fitting off and cleaned it but it still leaked after reinstalling. I went to Auto Zone to get a replacement and of course you have to buy a pack! The guy at Auto Zone told me that all of the later cars had METRIC fittings so I bought a pack. I put the fitting in the link and it was too small, so back to Auto Zone! This time He pulled a SAE fitting from a pack and compared it to my fitting, not the same so He steered me to Tractor Supply. I ended up with SAE fittings and it did screw in but I still do not think it was the correct one.
I have the manuals and I cannot find info on the fittings. I believe that only the Z51 and maybe the Z06 has these fittings? Anyone know the correct thread size?
I took the fitting off and cleaned it but it still leaked after reinstalling. I went to Auto Zone to get a replacement and of course you have to buy a pack! The guy at Auto Zone told me that all of the later cars had METRIC fittings so I bought a pack. I put the fitting in the link and it was too small, so back to Auto Zone! This time He pulled a SAE fitting from a pack and compared it to my fitting, not the same so He steered me to Tractor Supply. I ended up with SAE fittings and it did screw in but I still do not think it was the correct one.
I have the manuals and I cannot find info on the fittings. I believe that only the Z51 and maybe the Z06 has these fittings? Anyone know the correct thread size?
Thread Starter
Burning Brakes
Joined: Aug 2006
Posts: 1,147
Likes: 18
From: Thompsons Station Tennessee
It screwed in but it would not tighten. It does work though! I put grease in and it stays in! I do think that it is Metric but whatever works!
Thread Starter
Burning Brakes
Joined: Aug 2006
Posts: 1,147
Likes: 18
From: Thompsons Station Tennessee
My "local" dealer is not as local as Auto Zone and it was Saturday. The 1/4 zerk did screw in it would just not tighten but it is good enough, there is no more grease leaking out. I just do not understand why it is so difficult to get information on the zerk! As I mentioned, I have the manuals and I went online to GM Parts and still could not get a answer. I bought the car 8 months ago so I do not know the last time it was greased. Most vettes do not have these fittings but the Z51 option does.
Melting Slicks
Joined: Nov 2007
Posts: 2,278
Likes: 550
From: Pittsburgh PA
St. Jude Donor '10-'11-'12-'13-'14
If your local dealer is not convenient (or is not helpful) contact Gene or Patrick at http://www.cultragfactoryparts.com/. They are a Forum Sponsor and a good source for parts.
Thread Starter
Burning Brakes
Joined: Aug 2006
Posts: 1,147
Likes: 18
From: Thompsons Station Tennessee
If your local dealer is not convenient (or is not helpful) contact Gene or Patrick at http://www.cultragfactoryparts.com/. They are a Forum Sponsor and a good source for parts.
Race Director
Joined: Sep 2007
Posts: 16,557
Likes: 2,106
From: Peoria/Phoenix AZ
C6 of Year Finalist (performance mods) 2019
My "local" dealer is not as local as Auto Zone and it was Saturday. The 1/4 zerk did screw in it would just not tighten but it is good enough, there is no more grease leaking out. I just do not understand why it is so difficult to get information on the zerk! As I mentioned, I have the manuals and I went online to GM Parts and still could not get a answer. I bought the car 8 months ago so I do not know the last time it was greased. Most vettes do not have these fittings but the Z51 option does.
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Team Owner
Joined: Mar 2014
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From: Below the bottom of Berby Hollow, NYS
Thread Starter
Burning Brakes
Joined: Aug 2006
Posts: 1,147
Likes: 18
From: Thompsons Station Tennessee
Thanks for your reply, it sounds like one member is now aware of the fittings!
Thread Starter
Burning Brakes
Joined: Aug 2006
Posts: 1,147
Likes: 18
From: Thompsons Station Tennessee
Drifting
Joined: Sep 2007
Posts: 1,331
Likes: 148
From: 1000 Islands Ontario
I grease mine in the fall before winter sleep. These days I do about 2,000 miles a year. Yes a little goop comes back out, but I let it sit on the lift for a while and keep wiping it off. After a while it stops.
M...
Team Owner
Joined: Mar 2014
Posts: 21,631
Likes: 1,144
From: Below the bottom of Berby Hollow, NYS
The grease shouldn't come back out the zerk.
I greased farm machinery when I was a kid -- not to mention older cars I had that had numerous grease spots -- and we pumped until the grease bled out from under the rubber cover. It never came back out through the fitting.
Did they re-invent grease fittings?
Like they keep re-inventing Windows and each version is worse than the last. 
I greased farm machinery when I was a kid -- not to mention older cars I had that had numerous grease spots -- and we pumped until the grease bled out from under the rubber cover. It never came back out through the fitting.
Did they re-invent grease fittings?
Like they keep re-inventing Windows and each version is worse than the last.
Thread Starter
Burning Brakes
Joined: Aug 2006
Posts: 1,147
Likes: 18
From: Thompsons Station Tennessee
Thread Starter
Burning Brakes
Joined: Aug 2006
Posts: 1,147
Likes: 18
From: Thompsons Station Tennessee
Beats me! If you google ZERK FITTINGS, there are companies that make many different styles and sizes. As I mentioned I have seen and pumped grease into many a ZERK fitting and none spit it back out. I also worked in a gas station and did hundreds of grease jobs. I did run in to fittings that would not take grease because they were plugged up!
Race Director
Joined: Sep 2007
Posts: 16,557
Likes: 2,106
From: Peoria/Phoenix AZ
C6 of Year Finalist (performance mods) 2019
It only takes a tiny piece of sand/grit to get stuck between the ball and seat to have grease spit back out. Always clean off the zerk first. Also wipe off the end of the grease gun before starting a grease job.
Those were primary rules when I worked part-time doing lube jobs and oil changes in '59/'60. The station owner said clean it before you start and clean it again when done.
Try taking the zerk out and soak it solvent (gas works) for a while, then push the ball in with a paper clip and blow some air in the backside.
Those were primary rules when I worked part-time doing lube jobs and oil changes in '59/'60. The station owner said clean it before you start and clean it again when done.
Try taking the zerk out and soak it solvent (gas works) for a while, then push the ball in with a paper clip and blow some air in the backside.
Thread Starter
Burning Brakes
Joined: Aug 2006
Posts: 1,147
Likes: 18
From: Thompsons Station Tennessee
It only takes a tiny piece of sand/grit to get stuck between the ball and seat to have grease spit back out. Always clean off the zerk first. Also wipe off the end of the grease gun before starting a grease job.
Those were primary rules when I worked part-time doing lube jobs and oil changes in '59/'60. The station owner said clean it before you start and clean it again when done.
Try taking the zerk out and soak it solvent (gas works) for a while, then push the ball in with a paper clip and blow some air in the backside.
Those were primary rules when I worked part-time doing lube jobs and oil changes in '59/'60. The station owner said clean it before you start and clean it again when done.
Try taking the zerk out and soak it solvent (gas works) for a while, then push the ball in with a paper clip and blow some air in the backside.
