The Stovebolt Site Forums The Shop Area Driveline Rebuilding my Dana 45 differential

I have begun the process of rebuilding (or having it rebuilt) my Dana 45 3.92 traction lok differential that's under our '58 Apache (shortbed Fleetside, big window, 4 speed).

Here's a photo of the differential:
www.stovebolt.com

So far, I've contacted Randy's Ring & Pinion, but they do not have a line on the components to rebuild the posi unit.
I'm not giving up so easy! I will keep looking for parts; I will also begin looking for a shop with a lot of history that may be able to rebuild the unit if I can't find the parts.

I will keep you posted.

Tim

Tim,

Do you think your ring and pinion is bad?
Bearing, races and seals are available. (Rockauto and Autozone)

I'm not sure about clutch packs but I'm hoping that 19 spline dana 44 parts will work.

Spring will see me doing the same thing I'm hoping.

Randy

Randy --

Fortunately, my gear set is good, with no chipped teeth. The wear pattern looks good, too. (I will try to upload a photo of the inside of opened up case tomorrow.)

Thanks for the info on the bearings, races & seals! I'm trying to find info on the clutch pack; I hesitate to crack open the traction lok unit, not knowing how it's put together...

Tim

Service Manual supplement is at:
http://chevy.oldcarmanualproject.com/shop/1959trucksup/59ctsms0506.html

I'm hopping the clutch packs are the same as a 44 powr loc.
I've got one to open up and compare.

One thing to think about that I learned the hard way.
Some powr loc's have reverse threaded bolts on the carrier halfs, some don't. The reverse threaded ones are expensive if you can find them.

Did a little googling. Seems as though the Dana 45 is a tough one to find parts for. I did find some good info here: http://www.chevytalk.org/fusionbb/showtopic.php?tid/293945/pid/2322730/post/last/m/1/ http://www.chevytalk.org/fusionbb/showtopic.php?tid/270714/

Heres the parts: http://www.drivetrainsuperstore.com...r-Lok-clutches-Model-20-also-POSI-22719/ http://www.alljeep.com/oscommerce/product_info.php?cPath=32_699&products_id=167266

Bulletin from Dana: http://spicerparts.com/sites/default/files/literaturelibrary/axl-pni-48.pdf

Interesting finds Whitedog. Using the part number from your Spicer bulletin I found.
http://www.4wheelparts.com/Drivetrain-Differentials/Dana-44-Power-Loc-Clutches.aspx?t_c=12&t_s=237&t_pt=101189&t_pn=D%2fS22233X

I hadn't thought that the 55p (passengers) would use the same parts but I guess when they finally came out with factory posi for the 55t (chevy truck) in 61/62 time frame it was probably similar.

You may want to check www.rockauto.com. Looks like depending on your motor CID, they have some of the bearings/cones/seals needed for your Spicer 45. Decent pricing, too.

Thanks to everybody for all the info on the 45! I need to take it all in!

Here is a photo of my posi unit:

photobucket.com

The ring gear's born on date is 6 13 58

copy on the gear is as follows:
6 13 58 DANA 30164 G1B62 47-12

Tim

This guy seems to think that 44 and 45 use the same clutches.
http://www.ebay.com/itm/gm-spicer-4...ries&hash=item3cc8fb5717&vxp=mtr

Any luck finding the E brake cables for it? I was told by my parts outfit that they maybe able to send out my old froze up one and have some made. Not cheap. How about different gear ratios ie ring and pinion?

Truckrolet -- Brothers (BrothersTrucks.com) now offers parking brake cables -- front cables from '55 to '70 models, and rear cables for '47 to '70 models (also intermediate cables for '66 to '72 models.

All the parts places do the same. Problem is its not for the Dana 45 axle.

photobucket.com

Here's a photo of the cable offered by Brothers.

I think it looks like the one from my Dana 45; I will have a chance to check it out this weekend to be sure.

Hope it helps.

Tim

Tim, if you tear it apart yourself, get a reading on the gap between the ring and pinion teeth. You'll want to set up the distance as it is now, not back to factory specs. If you do, you'll have noise and probable future gear wear.

Jeff

The 2 larger rubbers?, my local parts joint pulled one similar to that photo it was for an older truck don't remember the year. A photo is a photo, the parts listing is not for the posi rear, the guy at my parts place searched and couldn't find a match.