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Old 11-10-2019, 09:35 PM
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Dar Dar is offline
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Default 1970 T/A Brake Hold Off Valve Function and Service?

If I remember correctly this valve is unique to the 70 Firebird with power disc brakes.

Unfortunately my Detroit Iron factory Pontiac service manuals on CD will not function on my new computer due to software incompatibility (I'm going to have to find a fix for that). Anyway can somebody explain what this valve does exactly? In addition is there anything I need to do with this valve during the bleeding phase, I will be draining everything and replacing all the brake fluid?

Thanks.

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Old 11-10-2019, 10:41 PM
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johnta1 johnta1 is offline
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Default

Try these pics from service manual
The plunger has to be held in when bleeding brakes.


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Old 11-11-2019, 12:53 PM
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Quote:
Originally Posted by johnta1 View Post
Try these pics from service manual
The plunger has to be held in when bleeding brakes.


Perfect! Thanks again.

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1970 GTO Judge - Pepper Green w/Dark Green Interior, RAIII Auto
1970 1/2 Trans Am - Lucy Blue w/Black Custom Interior, RAIII 4-Speed
1970 Buick GS 455 Stage 1 - Fire Red w/Pearl White Interior, 30+ Options
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