Author Topic: Pto seals  (Read 4991 times)

emptyhead

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Pto seals
« on: July 08, 2012, 07:08:58 AM »
Posted this over at the g too.i,m in the home stretch on the tranny and trans case rebuild and am replacing the seals in my pto. I'm having some difficulty wit the rope seals on the shifting rod.i have been tapping them slowly but can't get all the rope in to each seal. I have been using a brass punch and hammer. Any ideas or tips. Thanks


steve-0

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Re: Pto seals
« Reply #1 on: July 08, 2012, 10:58:50 AM »
i cant help you much.
i went threw 2 of them so far. the first one i didnt replace the rope seal, i just cranked it down some more. the second on i machined out the casting and installed a regular oil seal.

emptyhead

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Re: Pto seals
« Reply #2 on: July 08, 2012, 04:28:39 PM »
Thanks steve. I guess I'll get as much of the rope seal in there and call it a day.

col.halftrack

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Re: Pto seals
« Reply #3 on: December 10, 2014, 09:00:03 AM »
 Can you give more details on the seal replacement and machining? I am rebuilding a PTO and would like to use seals.  Are there 3 seals in the PTO?
1941 White M2
1942 White M4A1 was M4
1942 Autocar M2A1
1942 Autocar M3-75
1943 White M13 rebuilt as M16
1943 Diamond T M3A1

steve-0

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Re: Pto seals
« Reply #4 on: December 11, 2014, 03:03:40 PM »
the cap that  the output shaft seal mounts in i clamped in my milling machine and cut out for the seal.
i don't remember what seal number i used.


halifaxgroup

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Re: Pto seals
« Reply #5 on: May 24, 2015, 12:50:37 PM »
Does anyone have a modern number for the two front seals of the PTO Drive Shaft? They are Part "L" Packing B184510, on page 313 of the Ord 9.   There is no cross over in the 1944 National Oil and Grease Seals Publication, or any reference in the 1940's Zeligson Parts Catalog.  Thanks. Paul

dwhite

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Re: Pto seals
« Reply #6 on: May 25, 2015, 03:59:18 PM »
I ended up going in a different direction on my PTO.  I machined the front bearing retainer for a conventional oil seal.  The seal is a CR 11730 (same as National 470328).  The seal rides far enough towards the U-joint on the shaft that it misses the worn part where the old packing type seal was.  Unfortunately I my case the shaft was quite pitted, so I had to install a speed-sleeve (99118) to fix that problem.  Dale
MVPA 17456
1952 M37
1970 M35A2C
1943 Diamond-T M3A1 under restoration

scotty71

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Re: Pto seals
« Reply #7 on: October 09, 2015, 09:21:15 PM »
Would it be possible to use rubber or neoprene 'O' rings for the shifting rod shaft seals?

Scott.

dwhite

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Re: Pto seals
« Reply #8 on: October 11, 2015, 08:29:10 AM »
If your rods are smooth you could probably get away with using thick o-rings.  But if your rods are rough or pitted the o-rings will get torn up fairly quick.  I used valve packing and haven't had any problems. DW
MVPA 17456
1952 M37
1970 M35A2C
1943 Diamond-T M3A1 under restoration

steve-0

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Re: Pto seals
« Reply #9 on: October 11, 2015, 12:36:23 PM »
you can buy packing. here is some 3/16
http://www.mcmaster.com/#9518k82/=zbndtp

im not sure which size would be appropriate but mcmaster has many

just click on the view catalog page on the right top of that page to select a size
« Last Edit: October 11, 2015, 11:46:45 PM by steve-0 »