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willysmjeeps.com :: View topic - Zerks, plugs or vents?? DANA 44 Rear end
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Zerks, plugs or vents?? DANA 44 Rear end

 
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Jeff_Lee
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Joined: Jan 27, 2014
Posts: 135
Location: West Palm Beach FL area

PostPosted: Sat Sep 07, 2019 8:14 pm    Post subject: Zerks, plugs or vents?? DANA 44 Rear end Reply with quote

Rebuilding my Dana 44 in my 51 M38. When I disassembled it, where the backing plates attach to the axle tube flange, there are two 1/8" NPT holes that feed into the axle bearing area - presumably for a grease fitting.
In one fitting (on top of the axle tube) I found a zerk lubrication fitting, broken at the neck, and one plug with an Allen head recessed in it. Same both sides.

When I look at the ORD-9 parts catalog, it calls for one hole to be filled with what appears to be a 'zerk' grease fitting (504208), but the second hole is filled with a "#587310 Valve"
Two questions:
1. is there a replacement for the 587310 valve, and
2. is the "broken at the neck" grease fitting I removed possibly the valve and I just don't know it?

What do you recommend in these positions? I assume at least one should be a zerk to periodically lube the axle bearing.

Jeff
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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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Jeff_Lee
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Joined: Jan 27, 2014
Posts: 135
Location: West Palm Beach FL area

PostPosted: Sat Sep 07, 2019 8:19 pm    Post subject: Reply with quote



This is the tiny thumbnail of the photo you tried to post. You must open the larger copy by left click on that thumbnail and then use the larger copy's URL for your post as shown below.


_________________
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


Last edited by Jeff_Lee on Sun Sep 08, 2019 12:50 pm; edited 1 time in total
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wesk
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Joined: Apr 04, 2005
Posts: 14970
Location: Wisconsin

PostPosted: Sun Sep 08, 2019 1:24 am    Post subject: Reply with quote

This should help with the lower grease fitting at the outboard end of both rear axle tubes. The Army had trouble with troops over lubing this fitting and blowing seals as well as contaminating brake shoes with grease hence the MWO to remove it since they required a periodic teardown & lube by hand anyway (every 12m miles or each year).




Top opening is a vent & lower opening is for grease fitting that was removed in the service bulletin.






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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
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Joined: Jan 27, 2014
Posts: 135
Location: West Palm Beach FL area

PostPosted: Sun Sep 08, 2019 12:49 pm    Post subject: Reply with quote

Wes, thanks for all the info!
I soaked my "broken zerk" fittings in lacquer thinner overnight, and removed layers of grime and paint. I found, underneath it all, two operable 5 psi axle vents! They cleaned up nice and are set aside for installation after the brake job, and any touch up painting is complete



You must right click on the image you want to post and paste the URL between [img][/img] these two guys. But the problem is not all web surfing programs are done the same way. I use Chrome to view the web and it is different on transferring photos then Microsoft's web browser.

IE:
Chrome: You right click on the photo you want to use and then left click on "Copy image address" then paste that URL between these two guys: [img][/img]

Microsoft's Explorer browser: You right click on the photo you wish to use then you left click on "Properties" then you paste that URL in between these two guys: [img][/img]




_________________
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


Last edited by Jeff_Lee on Sun Sep 08, 2019 9:10 pm; edited 2 times in total
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RonD2
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Joined: Oct 02, 2014
Posts: 766
Location: South Carolina, Dorchester County

PostPosted: Sun Sep 08, 2019 7:25 pm    Post subject: Reply with quote

If it helps:

McMaster-Carr is $1.70 each, P/N 1093K1 (Meets Mil-Spec), Pressure-Relief Vent, Zinc-Plated Steel, 1/8" PTF, 1/2" Overall Height, 1 to 5 PSI
http://www.mcmaster.com/#1093k1/=1160j1b

http://willysmjeeps.com/v2/modules.php?name=Forums&file=viewtopic&t=10132&postdays=0&postorder=asc&highlight=axle+vent&start=0
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Ron D.
1951 M38 Unknown Serial Number
1951 M100 Dunbar Kapple 01169903 dod 5-51

“The only good sports car that America ever made was the Jeep."
--- Enzo Ferrari

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wesk
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Joined: Apr 04, 2005
Posts: 14970
Location: Wisconsin

PostPosted: Sun Sep 08, 2019 7:47 pm    Post subject: Reply with quote

Quote:
McMaster-Carr is $1.70 each, P/N 1093K1 (Meets Mil-Spec), Pressure-Relief Vent, Zinc-Plated Steel, 1/8" PTF, 1/2" Overall Height, 1 to 5 PSI
http://www.mcmaster.com/#1093k1/=1160j1b


This is the same valve listed in blue printing at the bottom of my ORD 9 page above!
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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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RonD2
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Joined: Oct 02, 2014
Posts: 766
Location: South Carolina, Dorchester County

PostPosted: Mon Sep 09, 2019 8:25 pm    Post subject: Reply with quote

It sure is. I was just trying to enlarge the fine print! Very Happy
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Ron D.
1951 M38 Unknown Serial Number
1951 M100 Dunbar Kapple 01169903 dod 5-51

“The only good sports car that America ever made was the Jeep."
--- Enzo Ferrari

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