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I've got a 1989 F350 IDI 7.3 4x4 dump, and I just noticed the axle shaft on the right side leaking. How do I tell what kind of axle it is? My Chilton's book talks about 3 or 4 diff axles, is there a way to tell which is which so I can start ordering parts?
Definition of Twin Traction Beam (TTB) Tee Tee Bee ~
A Twin Traction Beam (TTB) front axle is found in 83-96 Rangers/Explorers 80-96 F150s and 80-98 F250s. Its like a independent and solid axle had a late night drunken stupor sex-o-thon and had a basturd child. The only beneficial worthwile or nice thing I can say about them is they ride good on road while stock and absorb hard bumps offroad in like prerunner trucks. In all other applications they suck. It works very similar to the twin I beam suspensions of 2wd trucks. The axle is hinged on a crossmember that allows each tire to move independently of the other. They are expensive to lift even slightly over stock. The higher the lift the more stress it compounds on to the frame and TTB crossmember and it leads to stress cracks that drastically weakens the frame and is extremely dangerous. Common TTB sizes are D35 (rangers/explorers) D44 (F150s) and D50 (F250s). TTBs are much weaker than their solid axle counterparts. Anyone wanting tires larger than 35" and plan to wheel their truck with any amount of confidence MUST switch over to a solid front axle swap (SAS).
Your front axle would be a dana 60. (F350 4x4 has a solid axle) The F250's and a couple older f350's have either a dana 50 TTB or a dana 44hd, also TTB. Most people are familiar with the term twin I beam, but thats the 2wd ones, the 4x4's are called twin traction beam... they dont suck THAT bad on a stock truck.
Your manual might not tell you how to tackle this one. My haynes manual said it was "beyond the scope of this manual and should be serviced by a specialized shop". It's not too hard but you do need to remove the carrier assy.
Your manual might not tell you how to tackle this one. My haynes manual said it was "beyond the scope of this manual and should be serviced by a specialized shop". It's not too hard but you do need to remove the carrier assy.
Yup, I have a Haynes manual too and that's what it said. Unfortunately My ford dealer will not touch any truck more than 10 years old so I have not choice but to do it myself.
Will the axle shafts pull right out of the diff housing or are there some kind of circlip holding them in?
Once you get the wheels, hubs, brake calibers,and spindles off the axel will pull right out. While you have it all dismantled, it would be a good time to inspect the needle bearings in the inner side of the spindle.
yea those damn inner axle seals will make you swear...alot its not too difficult to tear the front axle apart. just go ahead and replace those needle bearings. there not real expensive and itll save you the headache of them tieing up on you. youll need a slide hammer to pull them from the spindle though
so once I've got the axles out, just loosen the two carrier bearings caps off and the ring gear will pop right out? Do I have to remove the pinion as well? I'm hoping no....