'Bump started' - a term generally not in the lexicon of vehicle owners born after 1980.Ahhhh, the memories.
we even Bump started it to get it off the Ferry and save a few Joules.
sw-em has a bracket that I ordered that will bypass the need to get this remnant out, plus I can then ditch the oem alternator and voltage regulator for something more robust and easily replaceable/repairable.Not sure what the torque spec is for these bolts but easily found, and most likely also in the Greenbook.
Such a failure is a rare occurrence, but not one which hasn't happened before...and galling apparent on the pivot from 1-4 O'Clock is clear evidence that pivot bolt or Fanbelt tensioning bar, or both were loose, allowing movement of the Alt, causing cyclic forces on bolt which caused breakage...there is certainly plenty of vibration input from the belt! Alternator should be checked to be absolutely secured to block and not being able to move in any axis...good practice is to check for secureness or Alt (and tightness of Fanbelt) any time hood is opened for fluid checking or other service.
On the Alt conversion brackets which I offer, the ONLY failures which have occurred on Alt housing, or bracket or pivot bolt, have occurred for the same reason: Looseness, and the fact that there was relative movement between Alt case and bracket, or bracket and block! If Pivot bolt is properly torqued, after the Fanbelt has been tensioned, Alt will be securely ONE with block, and will stay that way!...but I include a nylock jamnut in my kit for additionally locking the pivot bolt in place (belt and suspenders...a triple safety feature, just because I can!).
Oh, it's quite possible it had not been tightened properly before I purchased the car. When I do the conversion I take a shot or two of the impact dimples where the body of the stock alternator hit the stud for the steering idler arm.Mathue;
There plenty of questions for the (even) older cars, so I only occasionally check into the 140 forums...
I can't agree that length of Fanbelt has any bearing on this IF adjusted properly AND Alt is properly tightened after that, because lower pivot and upper Belt tightening bar secure the Alt housing completely. That unmistakable galling can only be a result of continuous vibration and movement, and there must be NONE! Impact scarring is different in that it occurs after the mounting failure, when Alt housing bangs into things because it is free to move in totally unusual ways and places...
SW-EM bracket is highly accurately laser cut and pro welded. It should be secured to block with three 5/16"-18UNC X 3/4" -1" bolts, and Alt must be secured to bracket. Variations and special conditions which have been known to occur are all specifically covered in the installation instructions, but the bottom line is Alt must essentially be ONE with block...NO movement is allowed between Alt and bracket or bracket and block!