Jump to content
Stinky

Brake clunk

Recommended Posts

On my '86 720....I'm not sure that I have enough data, but here goes.  When I step on the brakes, there is a clunk.  It sounds like the shoes are grabbing the drum and turning till they hit something thay stops them.

 

That said, I took both drums off and didnt find anything wrong.

 

So, maybe it is in the front.  I will continue to watch it.

 

Also, I think, that the 1st time that I put on the brakes, that the pedal is lower...not much, .5-1" and that it only seems like it does it the 1st tme that I step on the brakes after they havent been used in 10 minutes or more.

 

I do not notice anything else about the brakes....they appear to work just fine.

Share this post


Link to post

Fronts.

Are the lug nuts on tight?

When the brakes are applied everything on the hub and connected to the hub wants to move to the rear as the truck moves forward. I would raise the front and wiggle everything suspension related. Don't be shy, lean into it. Visually look for worn bushings and anything on one side that doesn't match it's counterpart on the opposite side.

 

Rears.

Are the lug nuts on tight?

Take the drums off and look for broken hardware like a return or anti rattle spring.

Again the entire rear axle wants to move to the rear when the brakes are applied. Are the U bolts secure and tight?

 

Share this post


Link to post

if you have it off again check the adjusters are too loose. mounted to the back plate.  they are designed to move but have tention on there and not loose where it moves backing up then going Fwd moving and then binding

Share this post


Link to post

Good point. Half way through the '81 model year self adjusters were introduced but they can seize up because "self adjusting' and no one checks them. 

Share this post


Link to post

Join the conversation

You can post now and register later. If you have an account, sign in now to post with your account.
Note: Your post will require moderator approval before it will be visible.

Guest
Reply to this topic...

×   Pasted as rich text.   Paste as plain text instead

  Only 75 emoji are allowed.

×   Your link has been automatically embedded.   Display as a link instead

×   Your previous content has been restored.   Clear editor

×   You cannot paste images directly. Upload or insert images from URL.

Loading...

×
×
  • Create New...

Important Information

By using this site, you agree to our Terms of Use.