Powermaster Troubleshooting?

[t-topflyer]

Brakes seem to work fine, but if I pump the brake pedal the brake light will come on on the dash for a few seconds. Stop pumping light goes out. Driving with regular stopping/single routine pedal application and the brake light doesn't come on. If I drive along and do a hard application/stop it will sometimes come on. I'm thinking the accumulator ball is the culprit. Any way to be sure? Would like to pinpoint the problem before I replace unnecessary parts. I've never replaced an accumulator ball so any tips would be great. Also would like any leads on the best place to purchase the part(s) I need. Thanks

 

[John Wilde]

Brakes seem to work fine, but if I pump the brake pedal the brake light will come on on the dash for a few seconds. Stop pumping light goes out. Driving with regular stopping/single routine pedal application and the brake light doesn't come on. If I drive along and do a hard application/stop it will sometimes come on. I'm thinking the accumulator ball is the culprit. Any way to be sure? Would like to pinpoint the problem before I replace unnecessary parts. I've never replaced an accumulator ball so any tips would be great. Also would like any leads on the best place to purchase the part(s) I need. Thanks

Start here, I either lost a switch or pump this morning...

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