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Old 11-20-2011, 05:43 PM   #1
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Re: How to release parking brake B700?

Uh-oh. You have the dreaded Lucas-Girling hydraulic brakes. That uses sspring brakes (like an air system) that are released by pressure from the PS pump. They won't release with the engine off, though there MUST be a way to disengage them for towing.

Short answer: I have no idea. I suggest calling a truck shop that knows these brakes or a heavy-haul towing company.
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Old 05-09-2015, 08:55 AM   #2
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How to release parking brake B700?

Are these the electric over hydraulic? ImageUploadedByTapatalk1431176098.023848.jpg. ImageUploadedByTapatalk1431176137.324428.jpg. Gurling the same thing?
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Old 05-09-2015, 10:05 AM   #3
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Quote:
Originally Posted by Jarlaxle View Post
Uh-oh. You have the dreaded Lucas-Girling hydraulic brakes. That uses sspring brakes (like an air system) that are released by pressure from the PS pump. They won't release with the engine off, though there MUST be a way to disengage them for towing.

Short answer: I have no idea. I suggest calling a truck shop that knows these brakes or a heavy-haul towing company.
Use a wrench and back off the rear brake pots just like air brakes.

It is the only hydraulic brake system that works this way.

Front is not engaged by the parking brake.

Nat
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Old 01-13-2016, 08:04 PM   #4
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Originally Posted by nat_ster View Post
Use a wrench and back off the rear brake pots just like air brakes.

It is the only hydraulic brake system that works this way.

Front is not engaged by the parking brake.

Nat

Please tell me where the pots are located?
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Old 01-13-2016, 08:57 PM   #5
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The pots are next to each set of wheels under the drive axle (if I'm remembering correctly). They are cylindrical and should be quite obvious.

Something like this:

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Old 01-15-2016, 11:51 AM   #6
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Thank you!
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