I have a 1999 dodge ram 1500 1/2 ton truck . I need to replace the front wheel hub assembly. Is there anywhere I can get a diagram or exploded view of the assembly ?

Wheel Bearing and Hub Assembly - Front (MPA WH515006)

Wheel Hub Assembly Axle Nut Torque Spec: 180 ft-lbs / 244Nm, tighten further to align cotter pin with hole. .

Here are the specs you're looking for:
• Font axle to hub nut torque 185 ft-lbs
• Front hub bearing bolts 60 ft-lbs
• Caliper housing bolts 125 ft-lbs
• Caliper guide bolts 26 ft-lbs
• front spindle hub nut 97 ft-lbs
• lug nuts 100 ft-lbs.

buy an older truck to answer question all newer model vehicles have gone to a hub/flange bearing assembly these bearing setups handle loads without or very minimum variance, when you go into a cornering situation these bearing setups give you a steady and consistent track thus a better handling vehicle now instead of cleaning and repacing tose old cone and race style bearings you just unbolt hub assembly and any related abs sensors and bolt on new

You take off the right tire. You have take all the bolts out from underneath the

8–Stud Rotor

1. Raise and support the vehicle.
   
2. Remove the wheel.
   
3. Remove the hub extension.
   
4. Remove the brake caliper assembly.
   
5. Remove the axle nut cotter pin. Remove the axle nut.
   
6. Disconnect the ABS wheel speed sensor wire from under the hood. Remove the sensor wire from the frame and steering knuckle, if equipped.
   
7. Back off the hub/bearing mounting bolts 1/4 inch each. Then tap the bolts with a hammer to loosen the hub/bearing mounting bolts.
   
8. Remove the bolts and remove the hub/bearing assembly.
   

go to (autozone.com) and sign up for free to get access to parts prices & repair manuals with pictures for what you need.

go bye a hany repair manual at your auto parts store that will show every thing you need to know

the ansew i found is replacing the seal around the joint and from both end removing it and cleaning it out i had rocks in mine from going threw water and mud ita a all day deal but a twenty doller fix axle shaft oil seal is all i had to replace

Hub & bearing should be one assy, is that what your looking at?
3 bolts behind hub, to remove, done?

Sounds like either your hub assembly or front axel universals.