How do you change wheel cylinders?

[71400lb]

Hey everyone,
I was just wondering how difficult it is to change the rear wheel cylinders and brake shoes, on my 1971 3/4 Ton Cheyenne Longbed? It has the H052 10-bolt rear.

Reason I asked is because I brought it in to Pepboys to have the leak checked(from the rear right wheel)...and they said it would be a HUGE deal to take the rear hub off...that they'd have to remove the axels and so forth!

So is it a big involved job to change both sides wheel cylinders?

Thanks,
Rick
1971 3/4 Ton LB 2 whl drv
400/400
3.73:1 Open