quick question about motive power bleeder

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Mar 9, 2007 | 02:59 PM

69 Vette

Thread Starter

Drifting

Joined: Dec 2006

Posts: 1,769

Likes: 246

From: Morgan City Louisiana

quick question about motive power bleeder

When using the power bleeder and installing a new master cylinder do i have to bench bleed the master first?

Mar 9, 2007 | 03:29 PM

pws69

Melting Slicks

Joined: Nov 2001

Posts: 2,668

Likes: 43

From: Eastern US XX

Quote:

Originally Posted by 69 Vette

When using the power bleeder and installing a new master cylinder do i have to bench bleed the master first?

It is definitely best to do that. Otherwise, you'll have to push any bubbles in the M/C all the way through the system - you want to minimize having to do that.

Mar 9, 2007 | 03:58 PM

bobs77vet

Race Director

Joined: Sep 2004

Posts: 11,874

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From: Arlington Va Current ride 04 vert, previous vettes: 69 vert, 77 resto mod

i guess you don't have to but like pws69 said the idea is to push only fluid through the system not air or it will just make your job that much harder. i would definitely do it

Mar 9, 2007 | 04:44 PM

yellow 72

Le Mans Master

Joined: Apr 2000

Posts: 5,202

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From: cincinnati ohio

St. Jude Donor '09

Yes....

Mar 9, 2007 | 05:31 PM

GTR1999

Tech Contributor

Joined: Aug 1999

Posts: 15,176

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From: Connecticut, USA

bench bled it first, go to NAPA or AutoZone etc and get 2 of the metric conversion lines- they fit the port sizes. Cut the end off the non used side and curl them into the M/C sections to bleed. Works great and won't leak at the cylinder connection. Use a c clamp with the motive and lose the J clamps they come with. Pump it up to about 10 psi and see if the gauge goes down- if so you have a leak to find.