brake booster leaking???? - Chevy and GMC Duramax Diesel Forum
01-04.5 LB7 Duramax Powertrain Discussion of components that are directly involved in the power production and all that is needed to get and keep the truck moving . Engine , Transmission, Etc.

 
LinkBack Thread Tools Display Modes
post #1 of 5 (permalink) Old 04-10-2012, 08:57 PM Thread Starter
Junior Member
 
Join Date: Oct 2008
Location: Moreno Valley, CA
Posts: 159
Send a message via AIM to jesselb7
brake booster leaking????

I just replaced my brake booster cuz I was leaking PS fluid from between the brake booster and MC. When I was putting the new booster back on, one of the o-rings from the pressure lines fell off and I couldn't find it. I replaced it and put it all back together but now I'm still leaking PS fluid from where the hard line goes into the booster, not as much as before but it's still pissing me off. Any ideas of what I can do to stop the leaking? I read somewhere that replacing PS fluid with synthetic ATF would help stop the leaking What do you guys think? Thanks.

- Jesse
02 Chevy CC SB 4x4 LB7
EFI Live tuned by Idaho Rob
Edge CTS Insight
EGR Blocked
MBRP 4" Turbo Back Exhaust
DDM HID 4500k lows/3000k fogs
Leveled on Bilstein 5100s
Rare Parts Xtreme Duty Tie Rods
285 BFG All Terrains
jesselb7 is offline  
Sponsored Links
Advertisement
 
post #2 of 5 (permalink) Old 04-10-2012, 09:07 PM
LHN...We ARE the Joneses
 
Hook'em_Horns!'s Avatar
 
Join Date: May 2008
Location: Awww-stin, TX
Posts: 16,222
Send a message via Yahoo to Hook'em_Horns! Send a message via Skype™ to Hook'em_Horns!
Dino or Syn, shouldn't matter. You sure you have the right replacement?

2007 LBZ 3500 LT3 DRW Crew Cab, Sulastics, Putnam XDR 15K, B&W 30K-Turnover GN+Companion, Ride-Rite Air...EFI'd by Rob
2008 LMM 3500WT DRW Crew Cab, 8 'Flat/GN, Workforce Alum Toolbox, Ride-Rite Air

Use-ta Haves 2006-6.0 3500 WT DRW ExCab Flatbed, 2005-LLY 3500 LS DRW Crew Cab, 2002-LB7 3500 LS DRW Crew Cab
I Live my life in such a way that when my feet hit the floor in the morning...Satan shudders & says "Oh shit, he's awake!"

Hook'em_Horns! is offline  
post #3 of 5 (permalink) Old 04-11-2012, 06:58 AM
Senior Member
 
RichieRich's Avatar
 
Join Date: Mar 2012
Location: Jurupa Valley, Ca
Posts: 274
Quote:
Originally Posted by jesselb7 View Post
I just replaced my brake booster cuz I was leaking PS fluid from between the brake booster and MC. When I was putting the new booster back on, one of the o-rings from the pressure lines fell off and I couldn't find it. I replaced it and put it all back together but now I'm still leaking PS fluid from where the hard line goes into the booster, not as much as before but it's still pissing me off. Any ideas of what I can do to stop the leaking? I read somewhere that replacing PS fluid with synthetic ATF would help stop the leaking What do you guys think? Thanks.

How hard was it to do? The 03 I just picked up has a slight leak between the hydro boost and the master cyl as well. Did you just buy a rebuild kit or replace the boost?

2003 Chevy Silverado 2500HD CC SB Duramax
Airaid Intake, 4" Cat Back Jardine Exhaust, '06 Tow Mirrors, Husky 24k Slider Hitch, Tekonsha Prodigy, Billet Grill, Injectors Done at Dealer at 125k...now has 157k, UltraGauge
Nicktane Adapter and Donaldson filter on its way
RichieRich is offline  
post #4 of 5 (permalink) Old 04-11-2012, 07:11 AM
Administrator
 
jc1843's Avatar
 
Join Date: Jun 2008
Location: So. Cal
Posts: 14,541
Send a message via AIM to jc1843
If it is still leaking, replace the hose. The hydro perates on high pressure-- changing to a different fluid will not help.

Chevy 04.5 LLY, 2X, shell, XDR, MikeL Heavy duty up-grade, 6spd, TransGo, deep pan, de-badged, 65 Gallon replacement Aero tank, LBZ-mp, Kennedy pump, shimmed, Pre-fuel filter, tow mirrors, BU cam, gauges, GPS, Sirius, bags, custom grille, fender vents, HD trans cooler- Curt front hitch, footwell lights, load lights, Studs, head gaskets.--- Jerry
jc1843 is offline  
post #5 of 5 (permalink) Old 04-11-2012, 04:05 PM Thread Starter
Junior Member
 
Join Date: Oct 2008
Location: Moreno Valley, CA
Posts: 159
Send a message via AIM to jesselb7
Quote:
Originally Posted by Hook'em_Horns! View Post
Dino or Syn, shouldn't matter. You sure you have the right replacement?
I'm pretty sure its the right part. Everything bolted right on and fit correctly, except for the stupid leak... haha.


Quote:
Originally Posted by RichieRich View Post
How hard was it to do? The 03 I just picked up has a slight leak between the hydro boost and the master cyl as well. Did you just buy a rebuild kit or replace the boost?
I just replaced the booster, it wasn't hard, just a PITA. The 4 four bolts going through the firewall and the brake pedal clip were annoying, but besides that its pretty easy.


Quote:
Originally Posted by jc1843 View Post
If it is still leaking, replace the hose. The hydro perates on high pressure-- changing to a different fluid will not help.
That makes sense. I figured I would have to do that. Do you happen to know the part # or anything cuz I was looking to see how much it would be but I couldn't find exactly what I was looking for.

- Jesse
02 Chevy CC SB 4x4 LB7
EFI Live tuned by Idaho Rob
Edge CTS Insight
EGR Blocked
MBRP 4" Turbo Back Exhaust
DDM HID 4500k lows/3000k fogs
Leveled on Bilstein 5100s
Rare Parts Xtreme Duty Tie Rods
285 BFG All Terrains
jesselb7 is offline  
Sponsored Links
Advertisement
 
Reply
Gear in this thread - Powered by O'Reilly Auto Parts

Quick Reply
Message:
Options

Register Now



In order to be able to post messages on the Chevy and GMC Duramax Diesel Forum forums, you must first register.
Please enter your desired user name, your email address and other required details in the form below.

User Name:
Password
Please enter a password for your user account. Note that passwords are case-sensitive.

Password:


Confirm Password:
Email Address
Please enter a valid email address for yourself.

Email Address:
OR

Log-in









Human Verification

In order to verify that you are a human and not a spam bot, please enter the answer into the following box below based on the instructions contained in the graphic.



Thread Tools
Show Printable Version Show Printable Version
Email this Page Email this Page
Display Modes
Linear Mode Linear Mode



Posting Rules  
You may post new threads
You may post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are On
Pingbacks are On
Refbacks are On

 
For the best viewing experience please update your browser to Google Chrome