Need help in Identifying Dually Axel

[CrewCabDiesel]

Need help in Identifying Dually Axle

I bought a 1998 Freightliner chassis with a 24V Cummins in it and need to figure out what axel it has under it. Numbers on the tag are 080 AE125 1 S11-19444 3. The alxe has disk brakes and span between disk dust shields is 50 inches and span between spring perchs is 38 1/2 inches. The wheels are held on by 6 large lug nuts. I am hoping someone can tell me the gear ratio and who made it. I bought the frightliner for a Cummins conversion to install it in a motor home, but now the house is up for sale and I am out of time and have to part out the entire truck.

Thanks

Kyle

 

[Hoefler]

If you can ,post a picture of it. You can find the ration on the end of the pinion. You might have to wire brush it to get it to show up.

 

[CrewCabDiesel]

I found out the the rear axle is a 1 1/2 ton Dana 80. Now I need to figure out the gear ratio and I didn't want to pull the inspection cover, so I am going to see how many turns of the drive shaft it takes to turn the wheel one time. Anyone know how to figure out the ratio with that information.

One thing is for sure this is one heavy duty axle, you should see the size of the disk brake assy . Any idea what this axle would fit in besides a step van? I will try to post some photos of it later.

 

[SGibson]

how ever many times the yoke turns over for 1 rev. of the wheel is your ratio, the rear will fit whatever, cut the spring perches off, buy new ones and locate them wherever.

 

[CrewCabDiesel]

Well I just got done counting turns of the tire and pinion and here is the results. The pinion turns 2 time for every 1 1/4 turns of the hub, so what does that work out to for a gear ratio? I am not sure on the math to figure it out.

Thanks

Kyle

 

[RyanB]

Easy way to do this. Put a piece of tape on the hub or tire where it touches the ground. Put a piece of tape on the pinion. While turning the wheel/hub one full revolution count how many times the pinion turns. I have had problems doing this on open rear ends... if thats your case keep one wheel on the ground when doing this. You will find that when you do this on your axle its the pinion is probably going to turn at least 4 times... most of these axles are geared very low (high numericaly) Be carefull if trying to use this in a 4x4... if its a strange ratio you might have a problem finding a matching ratio for your front axle... just my thoughts anyway!



Ryan

 

[nps]

Your ratio as posted is 1. 6. Seems too low. Follow RyanB's advice.

 

[CrewCabDiesel]

I did it about the same way, I marked the wheel with chalk at top dead center and marked the pinion the same way, did it three times to be sure, same result. This truck has a huge spicer 5 speed trans (weights more than a small block 360ci ) model # ES43-5A with 19. 5" tires and of course a 24V 5. 9L Cummins. The truck around 2800 rpms was going 85 mph (wheels spining when it was stuck on the ice in my driveway ). I guess I will have to pull the cover once I cut the rear axle off the frame to see for sure if no one else has any suggestions.

 

[MPalachuk]

Call Freightliner with the truck serial number and ask them what rear end and ratio, They should be able to look it up and tell you.

 

[CrewCabDiesel]

Well I need to clean house, I have some parts left over from parting out the freightliner step van and they are FREE to good home.

1 very large solid front axle with springs, steering gear, disk brakes, swaybar assy. and 2 6 lug 19. 5 tires and wheels.

1 Saddle diesel fuel tank with mounting hardware and sending unit. I think it is between 30 to 50 gallon.

1 frame rail mount steel battery box with tie downs for 2 batteries.

On pair of head light assy. off a 1998 freightliner.

Conditions, you got to come get them by March 12th, after that they end up at the scrap yard.

Items located in Muskegon Michigan, PM me for contact phone #.

Thanks

Kyle

 

[CrewCabDiesel]

I finally got the inspection cover off the Axle and here are the numbers off the ring gear.

DON59 8 26 97 DANA A 44273 A4793 43 13. Also ring gear has 43 teeth.

Does any of this make sence to any one?

Thanks Kyle

 

[BCronk]

I would say the last few numbers are your ring & pinion tooth count. 43/13=3. 307... So a 3. 30 ratio?

 

[Nate]

Yup. Odd gear ratio.