Hi Art,
In George's first post, under Findings he says: "It is suspected that a copper-based antiseize agent was used on the pin of the failed ScanTech ball joint upon installation (but not on the threads)"
I feel like a heretic here, citing a Haynes manual as a reference, but my first Volvo 240 Ball Joint job was back around 1990, when my guidebook was an older (and IMO much better) Haynes 240 manual for 1974 thru 1990.
In the balljoint replacement procedure, following the obligatory Refitting is a reversal of removal, it says, "Do not grease the ball joint stud or it may seat to deeply and damage the rubber boot." [my emphasis]
Somehow that 1990 admonition stuck with me all these years, and I still fit the balljoint and tie rod end taper studs "dry", and feeling a tad smug at being "in the know" about such things. So far it hasn't caused me grief.
Just now I see that the later Haynes (1976 thru 1993) is not as direct, but does hint at the grease issue by saying, "Clear all grease from the housing and new balljoint, then attach..."
I think I even half-remember reading a similar caution in a balljoint manufacturer's packaging years ago too, but that may just be on-time onset senility.
What are your thoughts on this gripping issue? (edit)
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Bruce Young, '93 940-NA (current), 240s (one V8), 140s, 122s, since '63.
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