3 thoughts on “Replacing Worn Distributor Bushings”
Don Palmer, thank you so much for the detailed description for replacing distributor bushings. I’m doing this procedure on a 36 Packard 120. Now before you hit delete I’m first a Mopar guy. Still have my first car purchased from my grandpa 40 years ago when I was 12, a 65 300. My dad and father in law retired from the Belvidere plant.
I’ve got a 9/16 NC tap, looks like you used a NF, any reason one over the other?
Distributor Bushing are softer than steel in most cases so to minimize the puller from slipping out of the bushing during the pulling process(by shearing the threads) the use of a fine thread does two things:
1) gives the puller a tighter grasp of the bushing (more threads in contact = more area of contact = tighter grasp)
2) allows for a slower pull rate on the bushing decreasing pullout chances due to too fast a pull rate
There is no “right” answer but rather one involving increasing the conservatism/further minimizing the risks. Old bushing that have been in place for 80 to 90 years might object to being removed from their snug environment.
Damaging a bushing and not getting it pulled is not on my list of things to allow as the next approach could be extremely painful…..and not fun.
Wet/warm/snowless Christmas today doesn’t fit into the normal plan here in New England but the lights on the tree are inviting. Stay healthy as 36 Packards do not incorporate driverless technology?
Don Palmer, thank you so much for the detailed description for replacing distributor bushings. I’m doing this procedure on a 36 Packard 120. Now before you hit delete I’m first a Mopar guy. Still have my first car purchased from my grandpa 40 years ago when I was 12, a 65 300. My dad and father in law retired from the Belvidere plant.
I’ve got a 9/16 NC tap, looks like you used a NF, any reason one over the other?
Merry Christmas,
Jack Ryan
Distributor Bushing are softer than steel in most cases so to minimize the puller from slipping out of the bushing during the pulling process(by shearing the threads) the use of a fine thread does two things:
1) gives the puller a tighter grasp of the bushing (more threads in contact = more area of contact = tighter grasp)
2) allows for a slower pull rate on the bushing decreasing pullout chances due to too fast a pull rate
There is no “right” answer but rather one involving increasing the conservatism/further minimizing the risks. Old bushing that have been in place for 80 to 90 years might object to being removed from their snug environment.
Damaging a bushing and not getting it pulled is not on my list of things to allow as the next approach could be extremely painful…..and not fun.
Wet/warm/snowless Christmas today doesn’t fit into the normal plan here in New England but the lights on the tree are inviting. Stay healthy as 36 Packards do not incorporate driverless technology?
Don
Don,
Packard worked out great. As luck would have it doing this surgery to a 46 Plymouth now. Thanks again for your help.
Jack Ryan