News: Putting FUN and FRIENDLINESS, FIRST into owning and learning about AMC small bodied cars, primarily Eagles, Spirits and Concords as well as vehicles built in AMC's Mexican subsidiary, VAM.

The AMC Eaglepedia can now be accessed using the buttons found below  This is a comprehensive ever growing archive of information, tips, diagrams, manuals, etc. for the AMC Eagle and other small bodied AMC cars. 

Also a button is now available for our Face Book Group page.

Welcome to the AMC Eagles Nest.  A new site under "old" management -- so welcome to your new home for everything related to AMC Eagles, Spirits and Concords along with opportunities to interact with other AMC'ers.  This site will soon be evolving to look different than it has and we will be incorporating new features we hope you will find useful, entertaining and expand your AMC horizons.

You can now promote your topics at your favorite social media site by clicking on the appropriate icon (top upper right of the page) while viewing the topic you wish to promote.


  • November 22, 2024, 02:42:53 AM

Login with username, password and session length

« previous next »
Pages: [1]   Go Down

Author Topic: Hopping rear tire  (Read 3835 times)

0 Members and 1 Guest are viewing this topic.

Offline 82 amc eagle xchp

  • Eagle
  • **
  • Posts: 50
  • Thumbs Up 6
Hopping rear tire
« on: March 24, 2014, 04:44:18 AM »
My 82 Eagle  has a bad  right rear wheel hop when the brakes applied hard. I have turned the drums and it  has new kyb shocks. Around 20 years ago a drive shaft builder guy was looking at the car. and said "see how that spring is flatter than the other its bad"  I don't drive the car much any more.  I take it to car shows. Any one else think its the springs?
Logged

Offline mudkicker715

  • Administrator
  • AMC Eagles Den Addicted
  • ******
  • Posts: 3037
  • Thumbs Up 167
Re: Hopping rear tire
« Reply #1 on: March 24, 2014, 08:30:04 AM »
Shocks stop the bounce. Not the spring. Recheck the bad shock
Logged



Manitowoc WI

Offline BenM

  • AMC Eagles Den Addicted
  • ********
  • Posts: 1512
  • Thumbs Up 74
  • Pittsburgh, PA
Re: Hopping rear tire
« Reply #2 on: March 24, 2014, 02:11:45 PM »
It sounds less like a spring issue and more like a sticky brake.

The easiest things to check are the hard line and the brake cylinder. If it's pinched one wheel will get more pressure than the other, and since the lines are unequal it's easy for it to affect one side. Even a misaligned exhaust can begin to flatten a hard line. A weeping cylinder will cause the same symptoms and just a few drops of fluid can cause problems, it doesn't have to be noticeable with the drums on.

It could also be a partially collapsed soft line from the body to the axle, again the uneven lines and a bit of wear could make one wheel more sensitive to the effects of the collapsed line. They can act as check valves preventing fluid from flowing back as quickly as it enters.

Next I'd suspect a ridge or dirt in the wheel cylinder. Wheel cylinders are very cheap, and if there's dirt in it you may as well replace rather than clean them for the peace of mind.

Brakes are important enough that I wouldn't hesitate to replace original soft lines and cylinders just due to age.
Logged
NSS#47184

1987 AMC Eagle Sedan -- 1976 Pacer Coupe -- 1968 Pontiac Tempest Custom S -- 1940 Mercury (& a 2002 Jetta Turbodiesel, 5 spd., the Wife's Daily Driver)

Offline IowaEagle

  • AMC Eagle Archivist
  • Administrator
  • AMC Eagles Den Addicted
  • ******
  • Posts: 31968
  • Thumbs Up 477
Re: Hopping rear tire
« Reply #3 on: March 24, 2014, 02:16:10 PM »
If the shoes are glazed that could happen.  Happened to me.
Logged
Click for Toledo, IA Forecast" border="0" height="100" width="150   


Not a Jeep.  Not a Car.  Its an AMC Eagle!

1982 Eagle SX/4 Sport;
1980 Concord DL;
1970 Ambassador 2 Dr HT, SST
2002 Hyundai Santa Fe;
2008 Jeep Patriot Sport - Freedom Drive II

Offline carnuck

  • Having a 727 means never re-doing the trans again
  • AMC Eagles Den Addicted
  • ********
  • Posts: 3451
  • Thumbs Up 89
  • Near Seattle
    • Virtual Jeep
Re: Hopping rear tire
« Reply #4 on: March 24, 2014, 03:52:57 PM »
Switch the drum to the other side and see if it goes away. If the main leaf is cracked, it WILL hop badly.
Logged
AMC/Jeep gauges are for amusement only. Any correlation between them and reality is purely coincidental!

Offline mudkicker715

  • Administrator
  • AMC Eagles Den Addicted
  • ******
  • Posts: 3037
  • Thumbs Up 167
Re: Hopping rear tire
« Reply #5 on: March 24, 2014, 04:17:33 PM »
Quote from: carnuck on March 24, 2014, 03:52:57 PM
Switch the drum to the other side and see if it goes away. If the main leaf is cracked, it WILL hop badly.

True that about the main leaf.
Logged



Manitowoc WI

Offline 82 amc eagle xchp

  • Eagle
  • **
  • Posts: 50
  • Thumbs Up 6
Re: Hopping rear tire
« Reply #6 on: March 25, 2014, 04:27:16 AM »
Ok , I haven't checked the wheel cyls for years . I have replaced one hard line. I will check it out and get some new wheel cyls and change them out. The spring doesn't look cracked . I babied the car since I had it . Just trying to get ready for summer season . Thanks for the  advice
Logged
Pages: [1]   Go Up
« previous next »
 

SMF spam blocked by CleanTalk