Depends on what width the brake shoes are....
1/2 ton units use a large bolt thru the wheel cylinder to locate the wheel cylinder...shoes on these units are 11"in diameter and 2" in width
The 3/4 ton units use 11 5/32" diameter brake drums with shoes that are 2 3/4" wide and use cylinders with two small locator bolts thru the backing plate...
Remove the brake hose from the back of the wheel cylinder
Remove the brake drum
Remove the brake shoes...(note their width!)
Remove the large bolt at top of backing plate and any other thru bolts securing the backing plate to the spindle.
Once the backing plate is off, remove the small bolts securing the wheel cylinder in place.
Reverse for installation ...
BTW...Always best to do both sides front cylinders at same time...
Also, consider replacing those old rubber hoses while you have them out.
Note ! Make sure the bleeder nipple is long enough in the new cylinder to permit easy bleeding...so many new cylinders nowadays have short bleeders making the job more difficult.
Hope this helps
