I don't have a 3/4 ton, but unless its like any other drum brakes,
this is how to approach it (from my exerience):
1. Work at it. Make sure the parking brake isn't on, make sure you can
turn the drum freely (may have to jack up the other side).
2. Rock it back and forth while tugging at it. (You should probably
remove the wheel before step one. Ha ha)
3. Tap at the edge, towards yourself, as you turn it. This sometimes
pops them off.
4. At the bottom of the backing plate (on the axle side), look for a
small metal knock out or rubber plug. Remove it. Using a special tool
(looks like a cross between a spoon and a lever), back the star-wheel
adjuster up while holding the spring loaded lever back (sometimes I
have to use a second tool for this, so it gets crowded!).
5. The more you back off that auto-adjuster, the easier it should be
6. Once upon a time I had a drum brake so far gone that the shoes were
jammed inside the drums and backing the star adjust made no difference
(thanks mom). We had to use pry bars and wound up breaking the spings
and the ears on the wheel cylinder. This should NOT be neccessary for
Let me know if you need further clarification, and remember, I've
never done a 3/4 ton, so I don't know if its different.
A Different Jeff
Motorsforum.com is a website by car enthusiasts for car enthusiasts. It is not affiliated with any of the car or spare part manufacturers or car dealers discussed here.
All logos and trade names are the property of their respective owners.