Re: 1940 super eight 160 series 1804 model 1362 138" Wheelbase: making it driveable
Posted by Larrys40s On 2020/11/2 22:12:37
[b]Repairing front vent window crank gear box[/b]. Both of the front vent windows on the 1940 senior cars have cranks and both of mine were not working due to stripped gears. New gears can be bought from John Ulrich Packard Parts for $40/each and they work very well. The key steps to replacing the gears are as follows:
1) drill and tap a hole through both sides of the bracket - I used a #10x32TPI screw (#21 tap drill).
2) bend open the retaining tabs which will break off (hence the screws for later reassembly)
3) grind off the bottom of the pivot shaft just enough so you can pry off the bottom washer
4) mark the top side of the crank worm gear bearing (it only goes in one way). take pictures of how the gear is mounted on the shaft before removing.
5) take the unit apart so you can drive out the retaining pin on the stripped gear
6) reassembly. You will need to do some light filing to remove flashing on the new gear to make sure it fits on the shaft. I recommend greasing and oiling this after assembly as it is almost impossible to assemble the unit when filled with grease. Before tack welding the washer back on the bottom of the pivot post make sure the gear box works correctly. You will be glad you added the screws in step one.
Attach file:
(260.75 KB)
(181.50 KB)
(264.89 KB)
(223.25 KB)
(231.01 KB)
(228.76 KB)
1) drill and tap a hole through both sides of the bracket - I used a #10x32TPI screw (#21 tap drill).
2) bend open the retaining tabs which will break off (hence the screws for later reassembly)
3) grind off the bottom of the pivot shaft just enough so you can pry off the bottom washer
4) mark the top side of the crank worm gear bearing (it only goes in one way). take pictures of how the gear is mounted on the shaft before removing.
5) take the unit apart so you can drive out the retaining pin on the stripped gear
6) reassembly. You will need to do some light filing to remove flashing on the new gear to make sure it fits on the shaft. I recommend greasing and oiling this after assembly as it is almost impossible to assemble the unit when filled with grease. Before tack welding the washer back on the bottom of the pivot post make sure the gear box works correctly. You will be glad you added the screws in step one.
Attach file:
(260.75 KB)
(181.50 KB)
(264.89 KB)
(223.25 KB)
(231.01 KB)
(228.76 KB)
This Post was from: https://packardinfo.com/xoops/html/modules/newbb/viewtopic.php?post_id=227731