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Sounds like great results. I look forward to trying it myself. None of my zerks were bad either - I took them all off and tested them, and each flowed grease. So it's the bolts and bushings that are the problem, at least for you and me.

Looks good. How many stuck joints were you able to get grease into with this technique? For example, was it 50% successful?

I just wanted to add the videos, that Reworked LMTV posted elsewhere. Putting a bottle jack in between the leaf spring and the frame rail and jacking it up to relieve pressure on the joint can allow grease to flow into an otherwise stuck joint. It also gets the grease into the upper half of the...

No, when I took the zerk fittings off to test if they were stuck or not (they weren't) the inside of each of the bolts looked rust free and full of grease. They were clearly the original, or very old, zerks because they had several layers of paint on them. On the joints that the rejuvenator...

I agree. When I attack the remaining stuck joints tomorrow, my first plan is to remove the grease fitting and clean out the grease inside the bolt with a drill bit (by hand) or other long tool (e.g. screwdriver). That way I can try to get as much Kroil in there, as close to the stuck as possible.

I have used Kroil for several years. The stuff works great. http://www.kanolabs.com You can get it on Amazon, and I think at Lowe's. For this grease joint rejuvenator you need like 1/3 ounce (my guesstimation) for every "syringe" full. So get an 8oz can or bigger. Once you have some, you'll...

A little update... Originally none of my 12 leaf spring grease joints would take grease. All the fittings were fine (and those parts I listed above are the correct parts though), so it was the actual joint that was stuck shut. I'm guessing that at some point, decades ago, the truck stopped...

I was surprised. I took every suspension zerk off, and every one of them allowed grease to flow, but only one joint (installed on the truck) will actually take grease.

The 10mm grease fittings I listed above are the correct type for my 1997 M1078 (for the suspension). I changed them all today, but still can't get grease to pump through the various bushings. Do you need a higher than normal pressure grease gun?

I'm going to try these... Grease Fittings (M10 x 1 mm Male, Straight, Zinc-Plated Steel) McMaster 1105K73 Grease Fittings (M10 x 1 mm Male, 45° Elbow, Zinc-Plated Steel) McMaster 1105K79 Grease Fittings (M10 x 1 mm Male, 90° Elbow, Zinc-Plated Steel) McMaster 1105K78

Does anyone know what the proper grease fittings are for most of the things on the LMTV (e.g. spring hangers, drag link, axles pivots, etc.)? I was going to order some online, so I don't have any to compare to before ordering. Thanks!