Clean any rust or dirt out of the tapered holes (eyes) of the knuckle. Degrease the knuckle eyes and the upper and lower ball joint tapers with brake cleaner.
Do not try to reinstall the old brake hose support bracket on the upper ball joint. There will not be enough room to install the cotter pin if you use the bracket.
Get some help with installing the knuckle if at all possible. It's heavy and hard to do by yourself. Also, when I got the kit the wheel spacer was already bolted to the hub. If yours isn't, I'd wait to install the spacer until after the knuckle is installed. It's heavy enough as is.
Guide the knuckle assembly onto the lower ball joint stud. Attach the new ball joint nut and hand tighten. Lower the knuckle so it's hanging from the ball joint. Tighten the lower ball joint nut, but do not torque.
Note: Do not try to re-use the old nut on the new ball joint; it does not have the correct thread. Use the new nut provided with the kit.
Guide the end of the axle shaft into the back of the hub, being careful not to damage the rubber boots or over-bend the CV joint.
Place the big washer on the axle shaft. Install and securely tighten the new axle nut, but do not torque. It's easier to torque later when the weight of the coach is on the wheels.
If it's not already installed, align the holes in the wheel spacer over the studs on the rotor and guide it into place. Use the 8 nuts provided in the kit to hold it on. Torque the nuts to 120 ft-lbs. If the spacer was installed previously, check the torque of the nuts. Remove the crowbar.
Torque the new upper ball joint nut to 40 ft-lbs. You'll need a really short socket to get between the nut and the CV boot. Do not try to re-use the old nut on the new ball joint.
Note: I couldn't find any way to move the CV joint enough to make this any easier and couldn't fit a 1/2" torque wrench and regular socket. I ended up using a regular 3/8" socket wrench. Since the tie rod end nuts require about the same torque, I used them as a reference to feel the force needed on the 3/8" wrench.
Install the cotter pin in the upper ball joint stud and bend the ends of the pin so that it can't damage the outer CV boot. It may be difficult to insert the pin due to the thickness of the knuckle eye. Try curving the cotter pin to get it through the hole. Do not back off the nut to install the cotter pin.
Torque the lower ball joint nut to 100 ft lbs. Install the new cotter pin and fold back the ends. Do not back off the nut to install pin.
Use a grease gun to lubricate the upper and lower ball joints through their grease fittings.
Note: If you have trouble getting grease into them, remove and inspect the grease fitting. It may be too long and running into the interior joint or just installed too tightly. Back it off and try again.© Copyright 2011,2012,2013,2014,2015,2016 K. Bradley