what is the primary reason the tires lean in at the top on a 1990 f-250 4x4 ? is it bushing replacement ?

 

How much camber does it have? On 2wd it is usually spring sag, but you are talking about a solid axle front, right? A little camber...couple degrees shouldn't hurt anything.

 

i dont know if you would call it a solid axle or not . it is not a one piece tube from one side to the other . is it still called a solid axle ?

 

No, that is not solid axle. Does it have twin I beams?. If so, it is the springs....it has coils, right?

 

it has no coils just leaf springs . it is a 1990 f-250 hd 4x4 with a 351w . it looks like a two piece front axle and you can see the axle shaft running through to the gear housing . sorry dont know what it is called. the passenger tire leans more than the driver side .

 

F250 4x would be leaf springs, take a lot of spring sag to cause that condition to any great amount, dang near need be sitting down on bump stops to lean in enough to notice it.

Check the TTB pivot bushings and the ball joints, make sure all are tight (no free play any direction).

This truck have a snow plow mounted/used on it? steering act funny at times? most the lean is on drivers side? If so check the drivers side TTB for cracks near/directly behind the inner u bolt on the front of the beam and the backside near the pig housing.

Check the two bolts at the back side of the beam that attract it to the bottom side of the pigs housing, make sure they are both intact and tight.

 

no snow plows here (texas) . what is the TTB pivot bushing ? is it the bushing that holds the two axle halves together .

 

Had the same problem with my 96, the reverse arch leafe spring are known for flattening out so its probably caused by leaf spring sagging check and see if your leafs are almost flat if they are thats probably the problem

 

i hate it to look like that . whats the fix ?

 

TTB axles will also squat down when backing up. The tow-in of the wheels causes the bottoms of the wheels to be pulled slightly apart when backing up. I can see the difference in mine depending on if I drove forward or backed into it's parking space...

 

Ah yes Texas (really should fill out your "Profile"), its really is need to know information least in some cases.

Anyway the TTB twin traction beam bushings, the front axle is independent suspension setup.

Both beams travel independently of each other crossing by one other center of the truck. The drivers sides pivot point is over near the passenger side frame rail, the passenger side over near the drivers side frame rail.

The bushing is at the inner end of each beam at its anchor point, it allows the beam to travel/swing up and down out at its knuckle/wheel end.

Make sure you can't move the beam in any direction at that point, should have no free play at that bolt. No In/out up/down off center line of the bolt, use a pry bar and try move it should be tight on the pivot bolt. It'd move some yea but very little as you mash the rubber bushing some in the attempt but not much. If you can move it, find free play it needs replaced.

Check the ball joints and look while your under there, is it sitting right on the bump stops?

 

True and yea I can see it in mine, can really look funny looking at the wheel if happen to turn just a Hair first then park! Looks worse then when didn't turn little bit, backed in straight line then parked.

Yup front ends on these trucks do weird stuff, normal if you understand it but weird looking at times none the less!

 

i will check it out . i know it is not sitting on the bump stops just got done doing the brakes and i noticed it then .yes it looks very bad when it is backed up and turned . but i will check for play in the joints .

 

never look at the front end after reversing. always pull forward at least 20 feet or so before looking at it.

 

if i wanted to swap front axles from the TTB to a solid front axle . which solid front axle would i look for to fit correctly in its place ? from what year to year ? kind of axle ?