NEW TO INSTALLING rotor and bearings

[LUVMY69FORD250RANGER]

but i got a question. if u dont tighten the main lug lut down hard, how does it not fly off, its disc brakes with a cotter pin type, i know a blond question...

[montana_hiboy]

The cotter pin that goes thru your spindle prevents the castellated nut from backing off, be sure to bend the end of the cotter pin so it doesn't pull out on you.

[LUVMY69FORD250RANGER]

The cotter pin that goes thru your spindle prevents the castellated nut from backing off, be sure to bend the end of the cotter pin so it doesn't pull out on you.

SOMEONE TOLD ME DONT TIGHTEN THE MAIN LUG NUT THAT HOLDS THE ROTOR,,

[basketcase0302]

luvmy,

The only "blond" question, is the one not asked. What I was always taught!

You can't "overtighten" the nut that holds the bearing assembly on too tight or it will heat-up the bearing and wipe-it-out.
Rule of thumb I've been taught was to spin the assembly while tightening the nut. If the bearings were properly greased, you'll stop tightening when the rotor stops spinning.
Then put the wheel on and check how tight by rocking the wheel from side to side and top to bottom.
Run it down the road a mile or so, feel the outside of the wheel assembly to make sure it's not hot.

Basketcase

[390Nut]

To add to what basketcase mentioned, it's always a good idea to double check your new wheel bearings in the front after 25-50 miles or so. Like piston rings or anything else that wears, they need to "run in" and seat themselves in place, and what you thought was tight before might loosen a little. Leaving them like that will make them wear out faster over time.

Myself, I pull the outer bearing and add a little more grease to it when I do this, but it's not really necessary if you used plenty to begin with.