what rear axle do I have, no rwal sensor dually

[GMichaels]

what rear axle do I have, see pics 13" drums 3.5 shoes

OK yet anther disappointment, the ABS and Brake lights are on, so I get code 9, rwal sensor bad. I go back to check resisitance and the harness is there but no sensor.



I look closer and see there is no place for a sensor. From the rear cover it looks like a dana 70, but i can see the axle has been changed as some mounts have been torched off. I also notice there is no place for the e-brake cables on the drum backing plate.



So now what. I have to have the E brake to pass inspection. This axle is sloppy as well, may change to an 80?



This axle may be from a SRW truck as there is no offset between the front and inside rear wheel.



No numbers or tags on the axle.



a dana 70 or 80 is the same for a ford or a dodge right????





Let me know how to ID this axle. Thanks

 

[1stgen4evr]

Dana 70

Well - - - -



The dana 70 has been in production for quite a number of years and is used on the Fords as well as the Chevys also some of the motor homes. But they are custon made as far as the mounting and brakes. The brakes are specified by the customer, Dodge or whatever. Any good shade tree mechanic can change one to the other but- - - -. The spring pads may not be in the same place and some mechanics are better than others at doing the exchange. As you noted, the older housings didn't have a place for a sensor nor is there a toothed wheel on the carrier to create the signal from the sensor.



Till you get the right thing under your truck you might as well unhook the module that is behind the glove box. You don't have ABS anyway. That will at least put the light out.



Because there are not a whole bunch of spares for these truck, the unscrupulous repair man will do such work. The proper axle can be secured however. Watch the classified here and you will find what you need. You might find that the brake backing plates can be changed from a broken Dodge of the correct model. Or not. I expect that you best bet is to find a complete Dodge axle from the correct year and go from there. There are some Ford one ton axles that to the uninformed look like a Dana. All you can know for sure is that you have a ride for now. Or do you?



1stgen4evr

James

 

[dpuckett]

GMichaels-



Set up your signature so we know what you have. There were a few major changes between the older 1st Gens and the later 1st Gens. Go to your user control panel and fill in the blanks.



IT is normal for the front and inside rear dually wheel to track together, unless you have a cab and chassis, in which case the front wheel tracks in the middle of the duals- narrow rear.



NO Park brake cables? Is there at least a place to put them in? I know where to get them for $35 for the two of them.



Consider your self lucky to have no RWAL. It is only good on semi- wet pavement. Any other time, it prevents you from having full effect of the brakes, adn they will skid on wet pavement, snow, ice, etc. The fronts lock up either way- you lose steering- so what flipping good is it to not have the rears lock, too? Then when something malfunctions, it puts the rear brakes in permanent anti-lock mode, cutting marginal brakes to dangerous levels.



I unhook the box behind the glove box as a matter of course with a new vehicle, along with the fluid changes and driveline inspection.



Daniel

 

[GMichaels]

There is no place to put a parking brake cable on these backing plates. I just did my ford dana 70 parking brakes. I will try and post a picture.



I have read that a swr from brake flange to brake flange is 55" and for a dually its 60", is this correct?



Or are both axles the same for a swr and a dwr?



greg

 

[Philip]

The SWR to DRW are different length. The SRW rear is the shortest of the three that were installed in our trucks.



The SRW measures around 51" from backing plate mounting flange to flange.



The cab and chassis measures around 56" from flange to flange.



The dually measures around 59" flange to flange.



Sounds like you axle came out of something with the emg brake on the trans. A box van most likely.



If you go to the junkyard to get backing plates. The SRW takes a different backing plate than a DRW does. So watch out for that little item. The DRW backing plate is off set to the inside of the axle about 2" father than a SRW backing plate is. The wrong backing plate would require new brake drums to get the drum in the correct poistion.

 

[GMichaels]

I just measured flange to flange, its 57". I think this is a chevy axle. I need the parking brake,, so either i modify the backing plate, or get a new axle.



Like to know whats in there now. which means the drive shaft might have changed as well. This could become costly.

 

[Philip]

It could get expensive.



I dought that you need to replace the driveshaft. Most 1 tons used the same size u-joints across the different mfg's. It was cheaper that way for spicer.



I would take one of your backing plates with you when you start looking. That way you can be sure that bolt centers are correct to bolt to your axle.



If I remember right the numbers should be located on the passenger side tube almost on top of it. About 6" or so away from the center section. You will need a wire brush to find them. They are not stamped very deep. Then finding someone that will have a cross reference for numbers will be a problem.

 

[Paychk]

If you get the # off of the tag or stamped in to the axle tube, you can go here to find the build specifications.



http://www2.dana.com/expert/wc.dll?cvsp~deabill~2~



and this will tell you, the rigs your axle was used in:



http://www2.dana.com/expert/wc.dll?cvsp~Debill~

 

[GMichaels]

pictures

Here are some pictures of the mystery axle

 

[GMichaels]

brake backing plate

I took the axle cover off, lots of side to side play but no metal in the fluid. Does napa caryy the shims?

 

[GMichaels]

brakes 3.5 drum 13"

Here is a pic of the brakes, I need to add the emergency brake cable hardware. anyone have a picture of that hardware.

 

[bgilbert]

GM, on your first pic, I'm guessing thats a shock absorber going to the cab side of the axle?? Thought our 70's go to the rear of the axle. Well if that is a shock, then its pointing towards what Philip was saying where the axle is id stamped, have to get some brake cleaner and wire brush to id it.

Also what gears are in it? I can see the gear ratio ID tag on top left of the cover bolt.

Do you have the large hubs sticking out of the rear axle?

 

[1stgen4evr]

shock tube

Bill that was my first thought but I am thinking it is the exhaust pipe over the axle. Chevy does that asymetrical shock mounting. Not sure I understand that. Those drum edges look like I remember on my chevy.



If that is the tag between the two bolts on the right top, isn' that where Ford puts it. I seem to remember that the Dodge data tag is vertical on the left side(from the rear).



Are there no boots on the wheel cylinder.



The backing plates can be drilled to accept a cable. The other stuff looks just like I remember from the last time I had mine open. I don't have one open as of now so no pics. The mechanism to spread the shoes is missing of course.



1stgen4evr

James

 

[GMichaels]

no tags

Thats not a tag, its a clamp holding the brake line to the axle.

also thats not a shock, it is the exhuast pipe, the shocks look normal, but mounts were cut on the front of this axle which may have been for shocks, also spring perches were moved.



I can't post a bigger pic



No dodge axle used 13 inch drums and 3. 5 inch shoes right?



the ring gear is 12 to 13 inches, hard to measure right now.



maybe I will check some chevy boards, I looked at a c30 dump at auction today, the backing plate is very close to the picture, and no ebrake on it as well

 

[1stgen4evr]

What is it?

If you still have the hub/s off, look and see if the outboard bearing outer race (also called the cup) is installed from the inside and held in with a snap ring. If it is then it is a chevy. That is a Chevy only feature.



The gears are the same. Don't know about the brakes.



James

 

[Philip]

Those are Chevy brake drums and backing plates. The slots at 5:00 and 7:00 positions are for checking brake shoe thickness. Dodge did not use this feature. ( To bad I liked this feature).



Give use the bolt center measurements both directions on the backing plate. One of use can measure ours and give you an idea if it is the same as the Dodge bolt pattern.

 

[GMichaels]

bolt pattern, is this a dana 80?

IO will get the bolt pattern, but I think I am stuck with this setup or replace the whole axle. The drums are 13 inch, all dodge drums as I understand it are 12 inch.



the ring gear is 12 - 13 inch which is bigger than a dana 70, is that correct?

 

[GMichaels]

the ring gear is 10. 5 makiing it a dana 70. The outer bearing on the drum is held in with a snap ring making this a chevy axle.



There are no shims. I assume the side to side play is the same spec for a ford, dodge, chevy for a dana 70. Do the shims go on the out side betwween the bearing and case or inside between the bearing and ring?



Now can I get hardware to make the emergency brake setup so I can pass inspection? any thoughtss

 

[Philip]

The shims go between the bearing and the carrier assy.



To install emg brakes.



You will need to cut a hole in the backing plate for the cable to lock into. You will need to find a backing plate for around the same year model and use it to find the location and size of hole.



Then you need to hit a junkyard and find the cross link and arm used in the emg setup. The arm is the piece that the cable hooks to.



The next thing you will need is the cable guide that is welded to the backing plate to keep the cable from bending outward and rubbing on the drum.



I noticed all the self adjuster gear is gone. The shoes are gone. Most likely the drums are oversize and junk also. Plus you stated excess play in pinion. It is not correct for the vehicle.



IMHO I think you are poring good money it a bad sitation.



Have you called around to find the correct axle?



What state are you in. Maybe someone here knows where an axle is close to you.



What is the truck. Year, make , model. Please fill out a sig so we do not have to guess.

 

[GMichaels]

I am looking for the proper axle, they are rare.



I am good at fabrication so I can do the e-brake, if I could see the required harware that would help.



Aren't 13" drums and 3. 5 inch shoes even better for braking, more area? The drums are good, the shoe and seal will need replacing. The adjuster is there.



I suspect I would need new rims as well, the offset on these rims are more than the dodge rims.



either way a big pitass. the slop in the R&P is due to the side to side play, i will put in new bearings and shim for proper backlash.



Still have to figure out what this axle is out of so I can get parts if required. will try and locate n axle but will fix this one if nothing comes up.



1993 get5 3:54