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Jeff_Lee Member
Joined: Jan 27, 2014 Posts: 151 Location: West Palm Beach FL area
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Posted: Thu Sep 05, 2019 6:34 pm Post subject: Left hand threads on Both rear axle hubs - DANA 44 |
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I am rebuilding the brakes on my 1951 M38, and are replacing all the wear parts, including the drums. I also decided to change the wheel bearings and seals at the same time. While digging into this project I found that I have left hand threads on BOTH rear hubs.... obviously a field upgrade at some point along the way, ha. I had not noticed this before and just followed the "L" stamp on the end of the studs to instruct my wrenching. Both hubs appear untouched - the studs appear to be "first press".
I want to change one hub to Right Hand threads while I have it to hand. I have purchased 5 new RH studs of the correct length
Is this a simple process of press out the old, and press in the new stud ??
I have a hydraulic press that is quite powerful and should do the job. I am a little concerned about oversizing the press-fit holes, and ending up with 5 non-concentric or loose studs.
And just to be sure, the LH threaded studs go on the right rear hub and front left hub?
Any tips appreciated... Jeff _________________ 1951 M38 restoration project - Flightline Jeep MC 23923 DoD 6-51
1954 M-100 Trailer USMC Dunbar Kapple s/n M-750759 DoD 1-54
1947 Willys CJ2A - Harvest Green
1954 Ford F-100 Parts chaser - blueprinted Y-Block
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chuck Member
Joined: Jan 09, 2010 Posts: 143 Location: Nashua NH
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Posted: Thu Sep 05, 2019 10:13 pm Post subject: |
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Left hand threads on left(driver) side, right hand threads on right(passenger) side. |
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wesk Site Administrator
Joined: Apr 04, 2005 Posts: 16250 Location: Wisconsin
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jam51m38cdn Member
Joined: Feb 06, 2008 Posts: 69 Location: Findlay, Ohio
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Posted: Fri Sep 06, 2019 6:58 am Post subject: |
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I have never had to oversize hub holes on anything i put new studs in. Do you have the 2 piece axles with the taper or the newer 1 piece axles. The taper axles can be a lot of fun getting the hubs off. I have found only 2 pullers that will do the job. Both of them bolt on to the lugs. Jim
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wesk Site Administrator
Joined: Apr 04, 2005 Posts: 16250 Location: Wisconsin
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Posted: Fri Sep 06, 2019 9:53 am Post subject: |
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Quote: | I have never had to oversize hub holes on anything i put new studs in. | Jam, I believe Jeff's comment below means he was concerned about accidentally enlarging the hole in the hub while changing the studs. He does not mean he wishes to enlarge the hole.
Quote: | I am a little concerned about oversizing the press-fit holes, and ending up with 5 non-concentric or loose studs. |
_________________ Wes K
45 MB, 51 M38, 54 M37, 66 M101A1, 60 CJ5, 76 DJ5D, 47Bantam T3-C & 5? M100
Mjeeps photo album: http://www.willysmjeeps.com/v2/modules.php?set_albumName=Wes-Knettle&op=modload&name=gallery&file=index&include=view_album.php |
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Jeff_Lee Member
Joined: Jan 27, 2014 Posts: 151 Location: West Palm Beach FL area
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Posted: Fri Sep 06, 2019 12:29 pm Post subject: |
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Thanks Chuck, I would have buggered that up by using my feeble memory.
And Wes, thanks for the instructions. I scanned the doc's looking for guidance, but came up a little short on confidence. I know that the odd broken stud is replaced, but hesitated on popping out all five.
Jim, hubs can be a pain to separate, but mine came off with a 3 legged puller similar to yours. Don't leave home without it!
Thanks all.
Jeff _________________ 1951 M38 restoration project - Flightline Jeep MC 23923 DoD 6-51
1954 M-100 Trailer USMC Dunbar Kapple s/n M-750759 DoD 1-54
1947 Willys CJ2A - Harvest Green
1954 Ford F-100 Parts chaser - blueprinted Y-Block
Southeast Florida |
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jeepjay Member
Joined: Sep 26, 2010 Posts: 25 Location: monroe wa.
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Posted: Fri Sep 06, 2019 6:32 pm Post subject: |
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on a lot of those hubs the stud is swaged over after installation, if you try to push it out it will enlarge the holes in the hub. there is a tool available that fits over the studs threads and cuts the swaging away which then makes stud removal very easy and the hub retains it's original size |
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jam51m38cdn Member
Joined: Feb 06, 2008 Posts: 69 Location: Findlay, Ohio
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Posted: Fri Sep 06, 2019 7:15 pm Post subject: |
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Another thing i usually do is after i get the old stud out is i start the new stud splines in the same place as the old one and then turn the lug nut around and tighten it up to pull the stud in straight in until it seats against the back of the hub. Jim |
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Jeff_Lee Member
Joined: Jan 27, 2014 Posts: 151 Location: West Palm Beach FL area
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Posted: Sun Sep 08, 2019 8:55 pm Post subject: |
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jeepjay wrote: | on a lot of those hubs the stud is swaged over after installation, if you try to push it out it will enlarge the holes in the hub. there is a tool available that fits over the studs threads and cuts the swaging away which then makes stud removal very easy and the hub retains it's original size |
Not an expert on this stuff, but I think the swaged lugs are on the front wheel brake Drums. It doesn't appear that these rear hub lugs are swaged. I'll be pressing them in/out tomorrow and will report.
Jeff _________________ 1951 M38 restoration project - Flightline Jeep MC 23923 DoD 6-51
1954 M-100 Trailer USMC Dunbar Kapple s/n M-750759 DoD 1-54
1947 Willys CJ2A - Harvest Green
1954 Ford F-100 Parts chaser - blueprinted Y-Block
Southeast Florida |
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wesk Site Administrator
Joined: Apr 04, 2005 Posts: 16250 Location: Wisconsin
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