Drum Brake Service Flashcards
Hub-less drums slide off the ______
Drum Flange
Most Asian vehicles have 2 threaded holes on the drum, why?
To assist in removing the drum - install two 8mm bolts
True or False: some drums are held on with two screws
True
What is a common reason a drum is difficult to remove?
A small ridge is created as a result of the shoe not contacting the edges of the drum
Is there an alternative to removing a drum by hand? And what will need replacing if so.
Yes, you can use a drum puller.
New hold down pins will need to be replaced.
What are some of the reasons one might choose to replace wheel cylinders?
-has the brake fluid been flushed every 2 years?
-is it leaking brake fluid?
-how old is the vehicle?
Best practice is to replace if unsure as they are inexpensive
What type of wrench is used to loosen brake lines?
A flare nut wrench
True or false: Often old brake line fasteners will be seized onto the brake lines and will spin when you attempt to loosen them
True!
On new brake lines the nut will spin freely
What can be done to reduce or eliminate brake squeal?
Apply anti-seize compound to all 6 SHOE SUPPORT PADS
What are 2 options if shoe support pads are worn or grooved from shoe wear?
Install new backing plate
-OR-
You can MIG weld over the area and grind smooth
What is the brake shoe setting gauge used for?
It is used to measure the drum and shoe for the initial adjustment of the brake shoe-to-drum clearance
What is the last adjustment to be made in a drum brake service after the initial brake shoe-to-drum clearance adjustment?
Park Brake Cables - only if they are too loose
