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No Fluid going to back Brakes


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Hey Bob,

One of the major differences with the brakes on the TC and other cars is the bleeding especially the rear brakes. Our special brake system is run by a pressurizeing pump. We work with about 2900 lbs pressure. There is a complete different procedure for bleeding the rear brakes.

1.. Pump the brake pedal at least 25 times to release all pressure in the system. check brake fluid, open cap & add if not full, reclose cap tightly..

2.. Remove right rear (passenger side) tire, clean dirt from around bleeder screw, open and reclose bleeder..

3.. Turn on key, listen for pumping noise near brake valve (Master cylinder) to stop, have someone push on brake pedal, & hold it down, (you can use a stick between the seat & pedal or steering wheel & pedal, open bleeder, when satisfied that fluid is clear close bleeder, reinstall wheel..

4.. repeat for left rear wheel..

~ REMEMBER ~ before removing cap to add fluid ALWAYS pump pedal 25 times to release pressure in system..

Good Luck, lou

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  • 11 months later...
Guest My TC Toy

After you push the brake pedal 20 times, all pressure should be out of the system. If you then turn on the key, the pump should run about 15 seconds- if it runs shorter and you have no break, sounds like the pump is gone. Normally when the accumulator is defective the pump will run much much longer.

Sounds to me like the pump is gone. You will have to do some more checking.

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Before you condemn the pump, check the pump relay box to verify that the fuse connections have not melted away.

There is an absolute certainty that the accumulator is bad if it is the original one with white label around the top of the unit. If there is a yellow label around the middle of your accumulator, it is a replacement (OE) unit and may or may not be bad.

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