big problem with floor rust, how to fix the cause

you know a big problem with the floor rust thru on these A and B body mopars besides a leaking windshield gasket which is actually pretty rare if its installed properly, is actually caused by leaking wiper arm shafts. after all you can fix the floorpan, which is just the result of the leak and years of soggy carpet padding eating away at the metal, or you can fix the floor, then take the necessary steps to prevent a future leak

the seal for the rotating wiper arm shaft to the cast pot metal housing dries out and lets water inside the car since the back half of this part is inside the cowl behind the dashboard.

what i did with mine on both of my 2 old dodge charger restorations was to remove these parts from behind the dash when i took each car apart, drilled a hole in each of the housings in an angle that would be accessable when they were remounted, installed a grease fitting in each hole, and pumped a small amount of ball joint grease in each one. this not only lubes up the shafts for the wipers, but makes a seal to keep the water out of the interior.

if there isnt too much room to install grease fittings, you can still drill a pin hole with a #40 or 1/16" drill bit , and use a pin oiler that attaches to a grease gun to fill these housings with grease.

works like a champ

i will be doing this on my 67 cuda as well when the resto starts. not sure if theres enough room on the A body housings to install grease fittings, or if i will have to just make a pin hole to grease them up. i guess i will find out when the car gets pulled apart.

hope this helps
matt