Woody's 1984 Jeep CJ7
WARN HUB CONVERSIONS
The 1984 CJ7 started with five-bolt wheels and five-bolt OEM Warn 28751 Hubs

FRONT AXLE:
A Dana 30 was always used on the front axle

Used in later Jeeps the later and more robust Dana 44 used a 30-spline shaft.
The front axles on this 1984 CJ7 came equipped with five-bolt disk brake-hubs and 
OEM Warn 28751
series five-bolt manual locking hubs.

 

There is a good article about Hubs at http://www.jeeptech.com/axle/hubs.html 

According to the above web page basically:
What are Six Bolt Hubs?

The term "six bolt hubs" often causes a bit of confusion 
since all CJs, YJs, and TJs used wheels with 5 lugs. 
There are two styles of brake hubs, however, 
used on CJs between '72-'86. 

From '72-'80 Jeep used a brake hub (for a 5 lug wheel) 
that had 6-bolts to hold on the lock-out hub
but
from '81-'86 Jeep used brake hubs (for a 5 lug wheel) 
with 5-bolts to hold on the lock-out hub. 

There are limited selections of lock-out hubs available 
that work on the newer 5-bolt setups.
Another concern is that those OEM 5-bolt lock-outs are fairly weak. 
For this reason many people choose to swap out the 
less-desirable 5-bolt brake hubs 
for the more-preferred 6-bolt brake hubs 
and the upgrade to the 6-bolt lock-out hubs 
on their later 1981 through 1986 CJs.


Woody has purchased some used equipment with the interest of making this conversation.
Watch this page for updates on this issue.

Since Woody's newer 1984 CJ7 has disk brakes, we'll see how this unfolds.
If the conversion to a six-bolt lockout hub works this will be pretty cool.
Watch this page for updates on this issue.
Keeping our fingers crossed.

IF YOU HAVE ANY EXPERIENCE MAKING THIS CONVERSION 
WOODY WOULD LOVE TO HEAR FROM YOU.
Please email Woody by
Clicking Here



Also 
I have found good references and discussion at: 
http://www.jeepforum.com/forum/f8/5-bolt-6-bolt-hub-conversion-687922/ 
Which partially reads:
"All Dana 30s from 1972-1980 use a six bolt locking hub. 
From '72-'78 the factory had Warn Premium hubs as an option. 
From '79-'80 the factory used Warn non-premium hubs stock. 
From 1981-1986 they use a weak Warn five bolt locking hub stock. 

Outer parts (knuckles out) can be switched among to different versions of the CJ Dana 30. 
This means CJs with drum brakes can upgrade to disk and 
CJs with cheesy 5 bolt locking hubs can upgrade to 6 bolt locking hubs. 
Later (non-CJ) models use different knuckles and ball joints that are not compatible to the CJ Dana 30. "

A page telling step-by-step HOW TO replace the front axle parts was found at:
http://www.4x4wire.com/jeep/projects/pieces/front/


CLICK ON A PICTURE TO ENLARGE IT FOR A CLOSER VIEW

WARN LOCK-O-MATIC AUTOMATIC HUBS 
WARN apparently had problems with crazy Jeep'ers abusing and breaking the hubs.
As a consequence they unfortunately no longer build these.

In 2013, a brand-new in-the-box pair of Warn Lock-O-Matic hubs was found for sale on the Internet:



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WARN LOCK-O-MATIC AUTOMATIC HUBS
 
Although Woody would have loved to have just bought the new hubs,
they were too expensive for his discretionary budget.
Instead he has now started assembling parts from units found on the Internet.
Below is a collection of parts he purchased which proved to be incomplete.
To this end additional parts collections will have to be made.



CLICK ON A PICTURE TO ENLARGE IT FOR A CLOSER VIEW



WARN HUB SALES PAMPHLET
Here is a Warn Hub sales flyer  (no it's not for sale, don't even ask)
It comes in two parts - to open and read:
- CLICK to see both sides of the first sheet (708 kb) and 
-
CLICK to see both sides of the second sheet (776 kb)
(or click on the picture, below)



WARN LOCK-O-MATIC JEEP STICKER
On my 1972 CJ5 equipped with Lock-O-Matic's 
this sticker was on the inside of the glovebox door.






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WARN STANDARD MANUAL LOCKING HUBS 
These used parts bought had come from a 1975 CJ5 equipped with Drum Brakes (no disk brakes) on a Dana-30 front axle.
This is the style of Warn Hub now generically available from the manufacturer.


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FRONT AXLE SPINDLES 

BELOW:  These front axle components originally came from a 1975 CJ5.
Woody expects to try and set these up onto his 1984 CJ7.
Watch the expected intermittent profect results on this web page.
Since Woody is neither an axle or brake man,
any ideas or tips would be welcome.
IF YOU HAVE ANY EXPERIENCE MAKING THIS CONVERSION 
WOODY WOULD LOVE TO HEAR FROM YOU.
Please email Woody by
Clicking Here

 
 

CLICK ON A PICTURE TO ENLARGE IT FOR A CLOSER VIEW

The front axles originally came equipped with OEM Warn 28751 series manual locking hubs.
Below is the original configuration as was received on the day Woody acquired the CJ7
BELOW = Passenger (Right) side

 
BELOW = Driver (Left) side


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OTHER CJ7
LOCK OUT HUB RELATED LINKS:

Wikipedia 
 Automobile-Catalog.com 
Serial Numbers 
Jeep CJs and the Difference Between Them
.
.
.
.

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CLICK HERE FOR THE MAIN 4L RANCH WEB PAGE

Contact WOODY for questions or comments about this page via  email. 
All personal comments, pictures copyright 1996-2013 - R. Linwood (4L RANCH)
LAST MODIFIED:


Since 02 August 2013


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