Rear Wheel seal replacement help?

[stingus]

Need to replace my rear wheel seal and can't figure out my axle lb. Looked on drivers side and the numbers were Front: 2260 Rear:2546
Neither of these match up with the seals i find available.
What am i missing?
Also, any step by step help on replacing this rear wheel seal would be appreciated since I'm learning as i go.
Thanks!

 

[Bronco_69]

pull the wheel off. pull the brake hub off, remove the 4 bolts holding the axle flange on. pull the axle out, replace seal, put it back together.

i would replace the axle bearing at the same time.

 

[Viperwolf1]

Could be light duty or medium duty ('74-'75) axle. Medium duty uses the heavy duty bearing and seal.

 

[stingus]

Could be light duty or medium duty ('74-'75) axle. Medium duty uses the heavy duty bearing and seal.

Thank you!