Kraton High speed front wheel wobble

[Gjflores77]

Hello I hope can someone help me. When running high speed my front end wobbles and loses control unless I let off the power. The truck is new I changed the diff oil to 100 front 150 center and 80 in rear. Could this be the problem?

 

[2fast4u]

It's not the diff oil. Have you vented your tires thru the rubber ? If not one or more of them probably has dirt or water in it making it way off balance.

 

[Gjflores77]

The tires run fine on my et48.3. So I don’t think that’s the problem.

 

[AwwCrap]

Drive shafts?

 

[Gjflores77]

They look nice and straight

 

[AwwCrap]

What about the steering assembly?
Check all the screws make sure they're tight. Servo saver. Servo arm, bellcrank, etc.

And if your tires aren't vented. Give them a squeeze so air comes out through the rim ole. Does dirt or anything come out?

 

[Gjflores77]

It’s both front wheels if that makes a difference

 

[Gjflores77]

What about the steering assembly?
Check all the screws make sure they're tight. Servo saver. Servo arm, bellcrank, etc.

And if your tires aren't vented. Give them a squeeze so air comes out through the rim ole. Does dirt or anything come out?

All is good there.

Did notice my wheels have play at the bearings

 

[Soppy]

Hello I hope can someone help me. When running high speed my front end wobbles and loses control unless I let off the power. The truck is new I changed the diff oil to 100 front 150 center and 80 in rear. Could this be the problem?

Try adjusting the toe. Go toe-in or toe-out a little and see if that helps.

 

[Gjflores77]

Try adjusting the toe. Go toe-in or toe-out a little and see if that helps.

I had it straight then and now it’s toe out. Is toe in better?
My back wheels are toe in also

 

[2fast4u]

I had it straight then and now it’s toe out. Is toe in better?
My back wheels are toe in also

1-2mm toe out is the norm. Too much either way can cause issues. Measure it with the truck at ride height, not setting on a stand. If you are trying to eyeball it, that can be very misleading.

 

[Gjflores77]

I just checked my hubs and I have about 2-3 mm of play behind the pin.

 

[Soppy]

I had it straight then and now it’s toe out. Is toe in better?
My back wheels are toe in also

Toe-in will make the vehicle stay in a straight line better. Toe-out will make it turn better , faster. Too much either way will cause problems.

 

[AwwCrap]

Check hub nuts as well make sure they're snug but still allow some movement