Topic: Need Help with Knuckle

[zukjunkie13]

I have an 85 front axle and im rebuilding it and i cant remember which shim goes to which part of the knuckle, top or bottom, i have 3 thick shims. shouldnt there be 4? Sorry for the noob question

[sabenson82]

I just finished rebuilding my front axle and the kit i had came with 4 thin shims and 4 thick shims... i ended up using one thick and one thin on each, top and bottom. i think the only thing that matters though is how much force it takes to turn the knuckle (12-15lbs. i think), the shims adjust that.

[zukjunkie13 [OP]]

alrighty thanks for the info

[79coyotefrg]

yes  start  with 1 thick and 1 thin on both top and bottom caps
if you are using Marlins  kit  i can almost garrantee that  will be perfect

if its too loose  remove a thin from the top,  if STILL  too loose  remove the thin from the bottom

[KDXSR5]

i think the only thing that matters though is how much force it takes to turn the knuckle (12-15lbs. i think), the shims adjust that.

Not true. I believe the bottom ones are used to center the knuckle, and the top ones are to set preload on the knuckle. I am pretty sure thats right... maybe not. I think OOPS explained it to me once. That being said, I did one thick and one thin on both the top and bottom, and it all worked out just fine.

[OOPS]

If you run Marlin's new Super Seals the centering of the knuckle is not as critical as with the stock seals. Pre-load on the bearings is critical, especially if you are running some big, wide meats.

[KDXSR5]

If you run Marlin's new Super Seals the centering of the knuckle is not as critical as with the stock seals. Pre-load on the bearings is critical, especially if you are running some big, wide meats.

I used the super seals

[sabenson82]

yeah, like i said....one thick and one thin on top and bottom

[Steve_925]

zuk if you need some i have a bunch. get my number from rocky