Duramax Diesels Forum Truck of the Week
  #1  
Old 05-06-2009, 12:29 PM
TrentNell's Avatar
TrentNell TrentNell is offline
Finally underway !!!!!
 
Join Date: Jul 2008
Location: slc tuah
Truck: 2001 duramax
Engine: 6.6 duramax lb7
Transmission: Automatic
Posts: 8,014

Default hydro boost ?

i am putting a new hydroboost in this weekend ....... anyone done one yet? my question is wether you had to bleed/purge the ABS acumulator( tech2 required ) or if a standard bleed was enough ? i havent done one yet on a dmax . any other tips
__________________
Trent Nell
01 DMAX 2500 HD = Extreme Prejudice -> EPR Triple turbo Kit, EPR Allison Transmission, Aria's Forded Pistons, Howards Xbeam Rods , Built Engine, Ported Heads , Stage 2 cam, and Gorilla Girdle all by Randy's Engine And Machine , PPE Dual CP3's with 120% stroker pump , DDP 47LMP Injectors , 2-BD Diesel 165 GPH lift pumps , Frozen Boost W/A Cooler , 4link with coil overs at every corner , and a bunch of stuff I am probably forgetting.

9.87 @ 143.56, DA=6550

www.extremeprejudiceracing.com

2001 GMC CC/LB "The tow rig" , EPR Triple Turbo's EPR Trans , EFI live , RDL Headers and mouth peice, 305/55 R20 Coopers , 5" exhaust .
Reply With Quote
  #2  
Old 05-06-2009, 12:36 PM
stacks04's Avatar
stacks04 stacks04 is offline
Hotrodder
 
Join Date: Nov 2007
Location: Terryville,Ct
Truck: 04 Chevy crew cab
Engine: duramax diesel 6.6
Transmission: Automatic
Posts: 800

Default

Quote:
Originally Posted by trentnell View Post
i am putting a new hydroboost in this weekend ....... anyone done one yet? my question is wether you had to bleed/purge the ABS acumulator( tech2 required ) or if a standard bleed was enough ? i havent done one yet on a dmax . any other tips
eta: you should not have to bleed anything brakes related. you never disconnect the master. just the power steering system. hope this helps.


Removal Procedure

  1. Apply the park brake and block the wheels.
  2. Disconnect the inlet hose, the steering gear, and the return hoses from the booster assembly.
  3. Remove the master cylinder. Refer to Master Cylinder Replacement .
  4. Remove the stop lamp switch and the pushrod.

  5. Remove the booster to bulkhead nuts.
  6. Remove the booster assembly.
  7. Remove the gasket.
Installation Procedure


  1. Install the gasket.
  2. Install the booster assembly.Notice: Use the correct fastener in the correct location. Replacement fasteners must be the correct part number for that application. Fasteners requiring replacement or fasteners requiring the use of thread locking compound or sealant are identified in the service procedure. Do not use paints, lubricants, or corrosion inhibitors on fasteners or fastener joint surfaces unless specified. These coatings affect fastener torque and joint clamping force and may damage the fastener. Use the correct tightening sequence and specifications when installing fasteners in order to avoid damage to parts and systems.
  3. Install the booster to bulkhead nuts.Tighten
    Tighten the nuts to 36 Nm (26 lb ft).
  4. Install the stop lamp switch and the pushrod.
  5. Install the master cylinder. Refer to Master Cylinder Replacement .
  6. Connect the return hose, the steering gear, and the inlet hoses.
  7. Bleed the hydraulic booster system. Refer to Power Steering System Bleeding in Power Steering System.
  8. Release the park brake and unblock the wheels.

2009 General Motors Corporation. All rights reserved.






Power Steering System Bleeding
  1. Important:
    Use clean, new power steering fluid type only. See the Maintenance and Lubrication subsection for fluid specifications. Refer to Fluid and Lubricant Recommendations .
    Hoses touching the frame, body or engine may cause system noise. Verify that the hoses do not touch any other part of the vehicle.
    Loose connections may not leak, but could allow air into the steering system. Verify that all hose connections are tight.

    Important: Power steering fluid level must be maintained throughout bleed procedure.
  2. Fill pump reservoir with fluid to minimum system level, FULL COLD level, or middle of hash mark on cap stick fluid level indicator.Important: With hydro-boost only, the oil level will appear falsely high if the hydro-boost accumulator is not fully charged. Do not apply the brake pedal with the engine OFF. This will discharge the hydro-boost accumulator.
  3. If equipped with hydro-boost, fully charge the hydro-boost accumulator using the following procedure:
    2.1. Start the engine.
    2.2. Firmly apply the brake pedal 10-15 times.
    2.3. Turn the engine OFF.
  4. Raise the vehicle until the front wheels are off the ground. Refer to Lifting and Jacking the Vehicle in General Information.
  5. Key on engine OFF, turn the steering wheel from stop to stop 12 times.Vehicles equipped with hydro-boost systems or longer length power steering hoses may require turns up to 15 to 20 stop to stops.
  6. Verify power steering fluid level per operating specification. Refer to Checking and Adding Power Steering Fluid .
  7. Start the engine. Rotate steering wheel from left to right. Check for sign of cavitation or fluid aeration (pump noise/whining).
  8. Verify the fluid level. Repeat the bleed procedure if necessary.

2009 General Motors Corporation. All rights reserved.
__________________
2004 CHEVY CREW CAB

Last edited by stacks04; 05-06-2009 at 12:37 PM.
Reply With Quote
  #3  
Old 05-06-2009, 12:49 PM
TrentNell's Avatar
TrentNell TrentNell is offline
Finally underway !!!!!
 
Join Date: Jul 2008
Location: slc tuah
Truck: 2001 duramax
Engine: 6.6 duramax lb7
Transmission: Automatic
Posts: 8,014

Default

thanks stacks i havent looked at it that close yet , just starting to not work too well anymore pedal pushes clear to the floor now with little resistance , much less than my buddies truck , wasnt shure if it was all 1 unit or not hope its the only problem , brakes still work ok so master cylinder seems ok still .
__________________
Trent Nell
01 DMAX 2500 HD = Extreme Prejudice -> EPR Triple turbo Kit, EPR Allison Transmission, Aria's Forded Pistons, Howards Xbeam Rods , Built Engine, Ported Heads , Stage 2 cam, and Gorilla Girdle all by Randy's Engine And Machine , PPE Dual CP3's with 120% stroker pump , DDP 47LMP Injectors , 2-BD Diesel 165 GPH lift pumps , Frozen Boost W/A Cooler , 4link with coil overs at every corner , and a bunch of stuff I am probably forgetting.

9.87 @ 143.56, DA=6550

www.extremeprejudiceracing.com

2001 GMC CC/LB "The tow rig" , EPR Triple Turbo's EPR Trans , EFI live , RDL Headers and mouth peice, 305/55 R20 Coopers , 5" exhaust .
Reply With Quote
  #4  
Old 05-06-2009, 01:45 PM
JakeGMCHD JakeGMCHD is offline
FNG
 
Join Date: May 2008
Posts: 56
Default

Done it in about 45 minutes with removing the clip on the pedal and reusing the clip. Didn't bleed anything just slide it forward a little bit carefully. Hardest part is taking the 4 nuts off the Hydro Boost unit inside the cab.
Reply With Quote
  #5  
Old 05-06-2009, 01:57 PM
TrentNell's Avatar
TrentNell TrentNell is offline
Finally underway !!!!!
 
Join Date: Jul 2008
Location: slc tuah
Truck: 2001 duramax
Engine: 6.6 duramax lb7
Transmission: Automatic
Posts: 8,014

Default

Quote:
Originally Posted by JakeGMCHD View Post
Done it in about 45 minutes with removing the clip on the pedal and reusing the clip. Didn't bleed anything just slide it forward a little bit carefully. Hardest part is taking the 4 nuts off the Hydro Boost unit inside the cab.
what were your symptoms prior to replacement ? thanks for the info
__________________
Trent Nell
01 DMAX 2500 HD = Extreme Prejudice -> EPR Triple turbo Kit, EPR Allison Transmission, Aria's Forded Pistons, Howards Xbeam Rods , Built Engine, Ported Heads , Stage 2 cam, and Gorilla Girdle all by Randy's Engine And Machine , PPE Dual CP3's with 120% stroker pump , DDP 47LMP Injectors , 2-BD Diesel 165 GPH lift pumps , Frozen Boost W/A Cooler , 4link with coil overs at every corner , and a bunch of stuff I am probably forgetting.

9.87 @ 143.56, DA=6550

www.extremeprejudiceracing.com

2001 GMC CC/LB "The tow rig" , EPR Triple Turbo's EPR Trans , EFI live , RDL Headers and mouth peice, 305/55 R20 Coopers , 5" exhaust .

Last edited by TrentNell; 05-06-2009 at 01:59 PM.
Reply With Quote
  #6  
Old 05-06-2009, 08:01 PM
S Phinney's Avatar
S Phinney S Phinney is offline
Hotrodder
 
Join Date: Aug 2008
Location: Quncy, Fl
Truck: 03 GMC 4x4 CCSB
Engine: 6.6litre
Transmission: Automatic
Posts: 2,685

Default

Trent its not hard at all. It will take you about an hour. I had hydraulic fluid that kept wetting my inner fender well. The seal between the booster and the master cylinder was by-passing the power steering fluid (leaking). No real bleeding to be done just turn lock to lock several times after pressing your brakes hard several times.
__________________
03 GMC 4x4 CC/SB Intake, 5" SS Exhaust, built motor by Me, Cognito Kryptonite Suspension upgrades, Custom Traction Bars by Me, Suncoast Trans, 1055 Convertor, AirDog II 200, Billet pick-up, Custom Tuned by Me, Custom Fabbed Fuel system, Flexlite Fans, 7.70/92.5 mph 1/8 with two cracked intake ports. HSP TRIPLES ARE HERE AND LOOKING FOR 10"S
Reply With Quote
  #7  
Old 05-07-2009, 02:02 PM
JakeGMCHD JakeGMCHD is offline
FNG
 
Join Date: May 2008
Posts: 56
Default

My pedal was getting weak then going to the floor. Now it's like a brand new truck stopping with almost no pedal.
Reply With Quote
  #8  
Old 05-07-2009, 02:51 PM
bullfrogjohnson's Avatar
bullfrogjohnson bullfrogjohnson is offline
Big Girl!
 
Join Date: Nov 2006
Location: Locust, NC
Truck: 03 white ccsb lb7
Engine: 6.6 duramax
Transmission: Automatic
Posts: 4,980

Default

Anyone ever have the gasket go out? Mine has been leaking since the day I got it. If its not hard I might just knock it out
__________________
Travis
03 CCSB lb7
06 2500hd ECLB 6.0 gasser

2010 Straight Diesel 2.8 Points Champion
special thanks:
B&B Pulling and Greene's Diesel Performance, Fully Spooled Motorsports, Johnboy, Simon, Ed, ProFab Performance, Hamilton Cams, Extreme Prejudice Racing, Ridge Runner Diesel
Reply With Quote
Reply


Currently Active Users Viewing This Thread: 1 (0 members and 1 guests)
 
Thread Tools
Display Modes

Posting Rules
You may not post new threads
You may not 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

Forum Jump


All times are GMT -7. The time now is 02:34 AM.


Powered by vBulletin® Version 3.8.4
Copyright ©2000 - 2014, Jelsoft Enterprises Ltd.
vB.Sponsors