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Cornhead or "00" grease or knuckle pudding
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jeeper50 View Drop Down
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    Posted: 26 Nov. 2018 at 12:02am
Age old question once again, homebrew knuckle pudding or Cornhead (Urea based) or "00" grease?

Lots of info here;


Anyway I'm going to go with the 00 grease, used a knuckle pudding mix last time and the knuckle had a small amount of grease in it when pulled apart, swapped out the knuckle bearings and almost ready to bolt the brakes back on while waiting for my hub seal coming from my local parts house instead of ordering and waiting for them to arrive from my jeep parts guy. 
















jeep fun


Edited by jeeper50 - 26 Nov. 2018 at 12:06am

Belleview ol skool winch soon.
'48 CJ2A 283 V8 sm 420 granny low, tera low D18, overdrive,lockers

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jaksjep View Drop Down
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https://jdparts.deere.com/partsmkt/document/english/pmac/8180_fb_GreaseSpecialMultiPurpose.htm#_Special-Purpose_Corn_Head
My posts are my personal opinion and are not legal advice as I am not an attorney. If you act on any of my comments you do so at your own risk.
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Stev View Drop Down
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Points: 2391 		Post Options Post Options   Thanks (0) Thanks(0)   Quote Stev Quote  Post ReplyReply Direct Link To This Post Posted: 26 Nov. 2018 at 9:48pm
What type of axles do you have - Spicer, Bendix or Rezepa?   I have been using corn head lube for years with Rezepa axles and have had no issues.  
Stev
1946 CJ2A Trail Jeep (The Saint), 1948 CJ2A Lefty Restored
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oldtime View Drop Down
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Points: 4186 		Post Options Post Options   Thanks (0) Thanks(0)   Quote oldtime Quote  Post ReplyReply Direct Link To This Post Posted: 27 Nov. 2018 at 12:38am
Stev brings up an excellent point.
The ideal lube really depends a lot upon the type of axle installed.

The Spicer or Cardan cross type front axle joints will require 140 W lube.
That's  because the lube must migrate inward to the unsealed caps, the trunions and the needles.

Rzeppa joints can hold lube for a very long time if packed with regular or synthetic universal  joint grease.

Bendix joints require something that's semi fluid like the 00 grease, homemade  knuckle pudding, or cornhead grease. 

Because the 140 W is the most fluid ... That will mandate that the knuckle hemispere seals be in tip top shape.

If regular universal lube is used with Rzepa joints then the king pin bearings must also be well packed because thick lube does not sufficiently  fling to the kingpins.


Edited by oldtime - 27 Nov. 2018 at 12:42am
Currently building my final F-134 powered 3B .
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Mark W. View Drop Down
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Points: 7986 		Post Options Post Options   Thanks (0) Thanks(0)   Quote Mark W. Quote  Post ReplyReply Direct Link To This Post Posted: 27 Nov. 2018 at 1:25am
Where does this OO grease come into the discussion? My Service manual specifies O grade for winter and 1 grade for summer  Bendix joints

I chose to use O grade (cornhead grease) year round as Oregon for the most part is not a HOT place.

Once I retire and can do something between April and November besides drive a dump truck I might venture into warmer temps.
Chug A Lug
1948 2A Body Customized
1949 3A W/S
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Late 50's 134L 9.25"clutch T90A D18 (1.25") D44/30 flanged E-Locker D25 5.38 Since 1962
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Points: 2579 		Post Options Post Options   Thanks (0) Thanks(0)   Quote jeeper50 Quote  Post ReplyReply Direct Link To This Post Posted: 27 Nov. 2018 at 1:44pm
I disassembled the axle while apart and greased up the spicer cardan cross type ujoints. Never had any luck keeping the 140 wt oil in the knuckle, hence the 00 grease 

Belleview ol skool winch soon.
'48 CJ2A 283 V8 sm 420 granny low, tera low D18, overdrive,lockers

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oldtime View Drop Down
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Points: 4186 		Post Options Post Options   Thanks (0) Thanks(0)   Quote oldtime Quote  Post ReplyReply Direct Link To This Post Posted: 27 Nov. 2018 at 3:22pm
I'm really not familiar with OO grease but looking at your pic I see its comes in a bottle.
As long as it can flow into the Cardan cross it should work for the Spicer type axles.

The 140 wt lube will not work well on old jeeps with with worn out hemisphere's.
The hemisphere must be smooth and not gouged for the split seal to do its job.


Edited by oldtime - 27 Nov. 2018 at 3:25pm
Currently building my final F-134 powered 3B .
T98-A Rock Crawler using exclusive factory parts and Approved Special Equipment from the Willys Motors era (1953-1963)
Zero aftermarket parts

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Points: 2579 		Post Options Post Options   Thanks (0) Thanks(0)   Quote jeeper50 Quote  Post ReplyReply Direct Link To This Post Posted: 27 Nov. 2018 at 3:31pm
I wonder if a conventional ujoint could be substituded for the non sealed units? 

Belleview ol skool winch soon.
'48 CJ2A 283 V8 sm 420 granny low, tera low D18, overdrive,lockers

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My current build has the Spicer type shafts in it and it holds the 140 lube in very well.
Does the 00 lube flow in warm weather ?
I also wondered if perhaps a grease-able joint might fit the Spicer shafts.
Could possibly access the zerk  through the fill plug ???

Before now I have always preferred the Rzeppa shafts and internally packed them with Synthetic grease.
Those joints will go a very long time before re-greasing service is required.
Especially true if you run freewheeling /lockouts.

At any rate the king pins should always be packed full of  high quality EP grease when rebuilding.
Currently building my final F-134 powered 3B .
T98-A Rock Crawler using exclusive factory parts and Approved Special Equipment from the Willys Motors era (1953-1963)
Zero aftermarket parts

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Points: 2579 		Post Options Post Options   Thanks (0) Thanks(0)   Quote jeeper50 Quote  Post ReplyReply Direct Link To This Post Posted: 27 Nov. 2018 at 4:11pm
Ken
 Here's the spec of the 00 grease






I did pack the knuckle bearing with wheel bearing grease too


Edited by jeeper50 - 27 Nov. 2018 at 4:16pm

Belleview ol skool winch soon.
'48 CJ2A 283 V8 sm 420 granny low, tera low D18, overdrive,lockers

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 If you can't run 140 wt without leakage. 
I would certainly give it a try.
The Lithium base should work well.
Seems like it could be thin enough to sling up to the top kingpin when traveling at higher speeds.
Currently building my final F-134 powered 3B .
T98-A Rock Crawler using exclusive factory parts and Approved Special Equipment from the Willys Motors era (1953-1963)
Zero aftermarket parts

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Points: 1395 		Post Options Post Options   Thanks (0) Thanks(0)   Quote windyhill Quote  Post ReplyReply Direct Link To This Post Posted: 27 Nov. 2018 at 7:29pm
CORN HEAD CORN HEAD CORN HEAD! it's easy it works.  Pre-made Knuckle pudding.
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Here is a video on Cornhead grease.  Its what I used in mine.

 
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My jeep currently has sealed spicer u-joints in it with a bone dry housing. I haven't had any trouble from them, but I am a little concerned for the king pins as they were only greased when first assembled 6 years and 13,000 miles ago.
Kyle
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1950 Chevrolet Styleline Deluxe
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Originally posted by Clone421 Clone421 wrote:

My jeep currently has sealed spicer u-joints in it with a bone dry housing. I haven't had any trouble from them, but I am a little concerned for the king pins as they were only greased when first assembled 6 years and 13,000 miles ago.
Do you have the part number for the ujoints you installed? 

Belleview ol skool winch soon.
'48 CJ2A 283 V8 sm 420 granny low, tera low D18, overdrive,lockers

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Points: 410 		Post Options Post Options   Thanks (0) Thanks(0)   Quote Clone421 Quote  Post ReplyReply Direct Link To This Post Posted: 11 Dec. 2018 at 3:49am
Sorry for the late reply. I don't remember the part number, but if you're willing to take a chance there are several vendors selling them. With a quick search it appears Kaiser Willys sells the u-joint with a grease fitting. Walck's 4WD does as well i think.


According to this forum topic, Precision 365 super strength u-joints fit his CJ-5 Dana 25 axle.

http://www.earlycj5.com/xf_cj5/index.php?threads/dana-25-spicer-u-joint-where-to-get-one.112335/


Edited by Clone421 - 11 Dec. 2018 at 4:04am
Kyle
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1950 Chevrolet Styleline Deluxe
1984 Honda VF750F
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Points: 2579 		Post Options Post Options   Thanks (0) Thanks(0)   Quote jeeper50 Quote  Post ReplyReply Direct Link To This Post Posted: 11 Dec. 2018 at 1:52pm
Good info!! Thanks for the Walcks part number for the ujoints!



MOOG/PRECISION  365 ujoint  $10.35 ea on amazon




Edited by jeeper50 - 11 Dec. 2018 at 2:09pm

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Points: 850 		Post Options Post Options   Thanks (0) Thanks(0)   Quote Greaser007 Quote  Post ReplyReply Direct Link To This Post Posted: 11 Dec. 2018 at 3:15pm
   As an upgrade to the stub-axles on my model 30 front axle in my CJ-7, I installed the "Spicer-X" u-joints after 14-trips into and back out of the Rubicon Trail.

   The Spicer-X joint is not greaseable, but is supposed to be the strongest of the Spicer u-joints. Therefore it is the strongest because it is not cross-drilled for additional strength.

   Today, we will find that most auto mfr's have u-joints in the drive lines and such that are Non-greaseable units, and they go trouble free for hundreds of thousands of miles. Now, this can be disqualified if you charge-up the highway in 112 degree temps, and then plunge them into the lake while launching your boat. The quick change in temps will suck water into them.

   Are the "Spicer-X" joints offered for the early mod-25 front axles ?

   I am kind of brand-loyal and have had very good luck with Spicer.

   When I tear-down the mod-25 front axle on my '46, I suppose I will consider the Cornhead lube, or equal.

   Len
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