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D60 castor help

Magikal

1/2 ton status
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Nov 25, 2007
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North Idaho
Trying to figure out my castor angle on my d60. Does anyone know the seperation angle between the pinion and castor angle for a stock d60? Or a better way to check it?
 
just put your angle finder on the flat top of the king pin cap.

It can be done the way you're asking but the pinion is an added factor for possibly making a mistake.
 
Caster is the steer axis angle relative to a straight up and down line through the center of the tube. The spring perch to kingpin inclination is a good measurement to know but arbitrary for an on vehicle caster measurement.
Just throw an angle finder on the kingpin cap and that will get you really close.
 
Remember that you need to compensate for driveway/garage pitch. If your entire truck is pitched due to ground angle then you need to factor that in for a more accurate caster angle...
 
I should be looking for around 6-8 degrees, correct? 5" lift sitting on 40's.
 
Remember that you need to compensate for driveway/garage pitch. If your entire truck is pitched due to ground angle then you need to factor that in for a more accurate caster angle...
this is why i got a digital angle finder . i can zero it on any surface and then check stuff . when i use it in the shop i zero it directly under the spot i am checking on the floor and then read the spot i am checking works super great this way.
 
Ok, i just got back to my shop after work all day. Checked the floor and it was surprisingly level. Checked top of kingpin on my steering arm and am reading somewhere around 5-6 degrees. Better then i was expecting but still seems a little low. What do you guys think?
 
dana 60 and death wobble most times is worn saggy king pin springs . even 1/8" sag will give them problems . i have had good luck with crane offroad eliminator kit for them . also bronze bushing upgrade fits a lot tighter in the knuckle bore over the stock nylon bushings .
 
Yeah, already running springless and bronze bushings. Sure is nice being able to just tighten up the slack as needed. Also running high/xover steering and one ton tie rods. Bearings recently new also. Everything is in order, hence checking castor angle now....
 
5-6 degree should be good as long as it’s negative (top toward the rear).

Get the tire off the ground and try to move it in & out with one hand on top & one on the bottom.
If it moves it’s the kingpin.

Now try to move it in & out with your hand on the sides like you are steering it.and you should be able to feel if there excessive movement in the steering & links.
If you have a buddy they could help you find whichever link if may be by putting their hand on it to feel for a clunk.

Make sure there isn’t excessive play down the steering column, shaft, and gearbox.

Make sure the bearing preload is good just for reassurance.

Check the bolts and cones on the high steer arms make sure they haven’t come loose. It’s happened to me before.

I’m sure you’ll finger it out.
 
Checked all the above. This has been an ongoing battle for years now. I can every everything tight and just about eliminate the death wobble but never quite all the way. Frustrating. Looking at hydraulic steering this coming winter along with linking the front.
 
Checked all the above. This has been an ongoing battle for years now. I can every everything tight and just about eliminate the death wobble but never quite all the way. Frustrating. Looking at hydraulic steering this coming winter along with linking the front.

I thought you were already linked, that’s why I haven’t said anything. But my rig death wobbled on me when I first put the 52’s on front. Put a new stabilizer on it and that has kept it at bay but it still feels like it wants to. I’m pretty sure its your leafs wobbling side to side and you already know what needs to be done....
 
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