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#1 |
Registered User
Join Date: Feb 2013
Location: GA
Posts: 1,313
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Bleeding new brake system without an engine- need to wait?
Ive finally completed the install and i wanted to test for leaks and thought to bleed the brakes. I may be premature, does the engine have to be running to do this? Just to test for leaks? I havent installed the engine and was hoping to test for leaks first in the brake system.
I bought the plug for the prop valve and replaced the sensor with it. Ive got a bleeder kit also ready to start, just wasnt sure what I should/shouldnt do next. |
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#2 |
Senior Member
![]() Join Date: Feb 2014
Location: new smyrna beach fl / 29 palms cal
Posts: 1,727
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Re: Bleeding new brake system without an engine- need to wait?
No bleed away if you have power brakes hook a shop vac up to test pedal
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Hand made A/C vent manifolds for 64-66 trucks adapts any aftermarket A/C to OEM vent |
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#3 |
Registered User
![]() Join Date: Apr 2011
Location: Ft. Worth, Tx
Posts: 536
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Re: Bleeding new brake system without an engine- need to wait?
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#4 |
Registered User
![]() Join Date: Apr 2011
Location: Ft. Worth, Tx
Posts: 536
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Re: Bleeding new brake system without an engine- need to wait?
Duplicate post
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#5 |
Moderator
![]() ![]() Join Date: Aug 2011
Location: China Spring, TX
Posts: 7,280
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Re: Bleeding new brake system without an engine- need to wait?
Bleed it.
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Master Chief, US Navy, Retired 1964 C10 Step-side Short Bed - In Progress 2009 2500HD Duramax LTZ 1948 GMC Panel 1956 Big Window Stepside 1953 5 Window Chevy Stepside 1932 Coupe New Seat Foam for Bench Seats? |
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#6 |
Registered User
Join Date: Feb 2013
Location: GA
Posts: 1,313
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Re: Bleeding new brake system without an engine- need to wait?
Thanks guys for the quick replies, I actually dont even have the brake pedal installed yet. I'll hook that up first, been putting it off since the interior hasnt been covered yet with noise reducer mat stuff.
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#7 |
Moderator
![]() Join Date: Dec 2012
Location: ON, Canada
Posts: 2,159
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Re: Bleeding new brake system without an engine- need to wait?
You don't even need a pedal, you can push in the back of the master. Even easier, gravity bleed it, it's full of air. Let the gravity do the work for you...
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#8 |
Moderator
![]() ![]() Join Date: Aug 2011
Location: China Spring, TX
Posts: 7,280
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Re: Bleeding new brake system without an engine- need to wait?
That's what I did first is gravity bleed. Then used the pedal to check everything after. Went much smoother that way.
__________________
Master Chief, US Navy, Retired 1964 C10 Step-side Short Bed - In Progress 2009 2500HD Duramax LTZ 1948 GMC Panel 1956 Big Window Stepside 1953 5 Window Chevy Stepside 1932 Coupe New Seat Foam for Bench Seats? |
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#9 |
Registered User
![]() Join Date: Oct 2006
Location: San Jose NOR*CAL
Posts: 3,080
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Re: Bleeding new brake system without an engine- need to wait?
X2 on gravity bleeding .
Make sure you bench bleed the master cylinder first before you bleed the rest if the system.
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1960 Apache long bed fleet L6 250 Clifford intake 2 bbl carb. Langdon cast headers with dual exhaust and bellflower tips. T-5 5 speed, power steering and power disc brakes. "Over, Around or through it... " |
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#10 | |
Who Changed This?
![]() Join Date: Jan 2013
Location: Simi Valley, CA
Posts: 10,440
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Re: Bleeding new brake system without an engine- need to wait?
Quote:
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~Steven '70 Chevy 3/4T Longhorn CST 402/400/3.56 Custom Camper Simi Valley, CA |
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#11 | |
Registered User
Join Date: Oct 2013
Location: Bonnerdale, AR
Posts: 697
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Re: Bleeding new brake system without an engine- need to wait?
Quote:
https://www.amazon.com/Bestauto-Pneu.../dp/B07TMYSSN7
__________________
1971 Bone Stock C10 project "Jake" 1997 Sierra SLT factory short bed "Silver Bullet" |
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#12 |
Registered User
Join Date: Feb 2013
Location: GA
Posts: 1,313
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Re: Bleeding new brake system without an engine- need to wait?
That will do way better that the tinker toy I used. I went cheap after having to buy the expensive flaring tool that did perfect by the way...no leaks!!
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#13 | |
Who Changed This?
![]() Join Date: Jan 2013
Location: Simi Valley, CA
Posts: 10,440
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Re: Bleeding new brake system without an engine- need to wait?
Quote:
__________________
~Steven '70 Chevy 3/4T Longhorn CST 402/400/3.56 Custom Camper Simi Valley, CA |
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#14 |
Registered User
Join Date: Oct 2014
Location: Brandon, Manitoba, Canada
Posts: 974
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Re: Bleeding new brake system without an engine- need to wait?
Bench bleeding with a syringe is the latest greatest way to do a master cylinder.
https://www.youtube.com/watch?v=USdtwqju4GY |
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#15 |
Registered User
Join Date: Sep 2011
Location: Ark City, Kansas
Posts: 3,339
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Re: Bleeding new brake system without an engine- need to wait?
Front disc, rear drum???
If you have all drum or just rear drum, make sure the shoes are adjusted, and can even be adjusted a little tight, before bleeding. I also gravity bleed to start. |
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