Im going to try to replace my rear driverside drum brake cylinder on my 1979 f600 dump, the brake system is a vacume over hydro, does anyone have any instructions or tips it sure would help alot.

the rear end is a eaton unit,

 

anyone got any ideas?

 

Depending if it has dayton or bud wheels

If they are dayton it's optional if you want to remove the wheels and tires,it is lighter to get off without tires on it

If Budd wheels I don't recall if '79s had outboard drums
If it does have outboard drums remove wheels and tires and slide drum off

If it does not have outboard drums it's the same process as the dayton hubs
Remove axle shafts and remove bearing nuts
Loosen brake adjusters and slide the hub and drum off the spindle

When you remove the nuts on the axle there are cone locks that hold the axle in that can be pretty trying
I always hit the axle in the center with an 8 or 12 pound sledge hammer and it will viberate the cones loose and you can wedge a small screwdriver in the crack and pull it off the stud


Once the drums are off the you can take the lines off of the cylinders, remove the bolts and pull the cylinders out

 

Thank you for the help, did the job sunday everything went good, But when i was bleeding the brakes with the engine running, smoke started to blow out of the exhaust, alot of smoke,


NOW WHAT

 

Check the vacuum lines to the boosters for brake fluid. I'm assuming this is a gas engine?