Those grease buster tools work great on clogged zerk fittings, but with a small grease passage almost 2 inches long, and grease hardened up in that passage, you are not likely to move all that hardened grease. Even once you have removed the bolt, it takes a bit of work to clean the grease out of that long hole in the bolt.
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Bob & Becky
2012 3402RL
2012 Chevy 2500HD D/A CC 4WD
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