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Rick
Dodge Dakota
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3/11/2007
15:33:58
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 Subject: rear drum brakes - weird problem
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The wheel cylinder on one of my rear wheels was bad, so I replaced the wheel cylinders and brake shoes on the whole rear. (While I was at it, I installed new shocks, too.) I bled the new installs. While the rear end was still up on jack stands (with the front wheels chocked, of course), I put the truck in gear and let the wheels idle so I could test the brakes. About one out of every 20 times, the brakes wouldn't work. The pedal would go stiff on me and the wheels would keep spinning. I redid the whole job two more times (including re-bleeding the system) trying to figure out the problem, to no avail. When I finally put it on the ground and drove it up and down the neighborhood street,* I couldn't recreate the problem. So was that weird locking-up a side effect of having the front wheel stationary and the rear jacked up? Or is there a serious problem that I need to have a professional mechanic look at?
Thanks.
*Just want you all to know I did this very gingerly. I live down a dead-end road; there was no one else out; I never exceeded idle speed; and since 70-80% of the braking power is in the front, I didn't worry so much that I wouldn't be able to stop once I did recreate the problem.
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OBIO3
Dodge Dakota
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3/11/2007
16:41:00
|  RE: rear drum brakes - weird problem
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How did you jack it up. Axle or frame. Do you have anti-lock. You never said what truck at all . But just in case does it have load compensate. Are you sure you got the primary and secondary shoes installed in correct location. Were the shoes way out of adjustment and now that your driving it, they adjusted properly. Requires reverse to adjust. Any springs left over lol. Just asking.
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Rick
Dodge Dakota
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3/11/2007
17:28:17
| RE: rear drum brakes - weird problem
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99 Dakota ext cab 4x4 with the 318, 9" drum brakes in the rear
I jacked it up by the axle. That's what the manual recommends, so that's the way I've always done it.
I'm sure I got the shoes installed in the correct locations. I only did one side at a time so I could look at the other for reference; plus the back shoes have that peg on them that the front ones don't. I reversed several times to adjust the brakes, both while on the jack stands and when I got it on the ground. No parts left over! :-)
Also, I may note that I put some high temp grease on the contact points where the brake shoes meet the backing plates. The Haynes book recommended that. I was very sparing with it.
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OBIO3
Dodge Dakota
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3/11/2007
19:03:38
| RE: rear drum brakes - weird problem
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Message:
Rick. I believe you fixed it already. trying to adjust the brakes in reverse is none productive far As I know on all automatic adjusters while in the air. Once you got it down and did the reverse thing, they adjusted as required. This is why there now working correct. These are my opinions only. But I think there pretty solid. Just in case, be prepared for evasive actions (EMERGENCY BRAKE)If you discover the need. You just never know but I doubt it will reaccure.
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shatto
Dodge Dakota
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3/11/2007
21:14:43
| RE: rear drum brakes - weird problem
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Message:
I recently discovered why my shoes lasted over 500,000 miles
You have to PUMP the brakes as you back up.
There was an immediate improvement.
Apparently they don't adjust well with normal backing and stopping.
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Bob Lincoln
Dodge Dakota
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3/12/2007
08:07:44
| RE: rear drum brakes - weird problem
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Pumping is not normally required. It can, however, free up something that is stuck.
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