I own a 1974 Amc Javelin Amx. I have recently replaced all of the hardware,hoses, cylinders and the resivior for the brakes on all four corners ( Power drum all around ) The problem I am having is that the rear brakes continue to lock up . When I release the presure on the bleed valve then they unlock until you apply the brakes again. Any thoughts ?

5

Asked by Sep 16, 2014 at 12:42 PM about the 1974 AMC Javelin

Question type: Maintenance & Repair

As noted above, all new brake parts on every corner. I have even disconected the e-brake and they still lock up.The old resevoir was the type that would be found on a car with disc brakes in the front ( mine has drum brakes all around ) . I replaced it with a unit that has equal brake fluid amounts in both sides of the resevoir for the front and back.

5 Answers

33,545

Have you replaced your master cylinder or brake booster? Were your brakes working before your replaced the reservoir?

1 out of 1 people think this is helpful.
Best Answer
5

The entire brake system was non-funtional. Not sure about the brake booster since the brake system was not working. The master cylinder is what I was refering to as the " resevoir ",so yes it was replaced but as noted above, the new unit is for a non-disc system. The car was built with a power brake system but had drums installed on all four corners.

33,545

I'm pretty sure that they had all four drums from the factory. When you say a "power brake system was installed", it sounds like the previous owner had converted it over to disc, then before he sold it, he put the old drums back on. If this is the case, you would have to convert entire system back over to drums in order for them to work correctly. If you have a mishmash of brakes systems they will never work properly. Is that the case, or is the brake system all original factory?

5

Thanks for the input. What I have found out is that this car was built during one of the only year end extentions that the goverment has ever allowed (built in Sept "74 ) . During this period AMC was building thier cars with whatever was left on the shelf. My car has a disc brake power booster and disc brake master cylinder with an external porportioning fitting on the output of the master cylinder rear brake line, with drums on all 4 corners....POWER DRUMS. ( very strange ) I have also learned that the Kelsey- Hayes porportioning valve that came from the factory is bad and will need to be replaced. I will also be checking the length of the booster rod and adjust as needed.

33,545

Wow....now there's something different! Hopefully after you change out the valve, all will be well again! Good luck!

Your Answer

Add photo

Related Questions

  • Car wont stay running 4 answers

    Starts then acts like not getting gas and dies. Only idles right a couple seconds and only if it sets for about a day. Fuel pressure to carb is good and has clean gas and good air flow no vapor l...

    1974 AMC Javelin

    -

    Maintenance & Repair

  • AMC 10 answers

    Who bought out AMC? Or did they just go bankrupt?

    AMC

    -

    General

  • Rear brake calipers will not release after driving and applying brakes and my brakes are dragging. 6 answers

    All of the brakes were dragging (4 wheel disk brakes) so I replaced all of the calipers and brake lines .The rear brakes are still dragging so I adjusted the Ebrake. The rear brakes are still draggin...

    Maintenance & Repair

  • brakes 1 answer

    what brakes system this your jeep has, my has the same wheels and lift but does not stop right.

    1986 Jeep CJ7

    -

    Maintenance & Repair

  • front disk brakes dragging? 6 answers

    2005 Silverado front disc brakes, back drum brakes. I replaced the master cylinder several months back after the front brakes all but locked up one day, we could bleed the lines and drive it 5 min a...

    2005 Chevrolet Silverado 1500

    -

    Maintenance & Repair

Javelin

Looking for a Used Javelin in your area?

CarGurus has 11 nationwide Javelin listings and the tools to find you a great deal.

ZIP:

Search AMC Javelin Questions

AMC Javelin Experts

#1 ryanpiercycr
ryanpiercycr
Reputation 60
#2 Jarvis_Javelin
Jarvis_Javelin
Reputation 40
#3 Reelin68
Reelin68
Reputation 30
View All

Related Models For Sale

Used Ford Mustang
682 Great Deals out of 38,438 listings starting at $1,963
Used Chevrolet Impala
927 Great Deals out of 36,363 listings starting at $1,800
Used Chevrolet Nova
197 listings
Used Buick Regal
212 Great Deals out of 11,108 listings starting at $2,195