Go Back   Jeep Garage - Jeep Forum > Jeep Platform Discussion > Grand Cherokee - WK

Join Jeep Garage Today
Reply
 
Thread Tools Display Modes
 
  #1  
Old 02-21-2010, 11:02 AM
brent's Avatar
Member
 
Join Date: Sep 2009
Posts: 182
Thanks: 0
Thanked 0 Times in 0 Posts
Rep Power: 1990
brent is on a distinguished road
Front brake job questions.

I'm going to be replacing my front disc brakes/rotors today. They're warped and rather than resurfacing the rotors, I'm just going to replace them. I picked up the OEM Mopar "make it new" brake kit (PN VWKXK868AA)

So I got some packets of Permatex ultra disc brake caliper lube, antiseize, and some disc brake quiet for the job. I feel like I've done my homework and am ready to go.

My questions are:

1. Is it necessary to bleed the brake lines for the procedure? I noticed the other forumites haven't and the service manual doesn't call for it. However, generic instructions on the internets typically recommend bleeding and topping off the master cylinder. http://www.moparmagazine.com/2009/ja..._mistakes.html

2. I think I got the inboard and outboard pads figured out but I wanted to ask. On the mopar set, there are no indicators other than red and yellow paint and an extra set of pins on the outside.

Top outboard (red paint, 4 pins pins)
Bottom inboard (yellow paint, 2 pins)



Can someone verify my thinking here?

Thanks!!!
__________________

__________________
2007 Jeep Grand Cherokee Overland. Airaid CAI. Magnaflow catback exhaust system. Billet style antenna. Michelin Latitude Tour tires.
Reply With Quote
  #2  
Old 02-21-2010, 11:27 AM
mon_21's Avatar
Senior Member
 
Join Date: Jun 2009
Location: Chantilly, Virginia
Posts: 1,165
Thanks: 1
Thanked 11 Times in 8 Posts
Rep Power: 69065
mon_21 has a reputation beyond reputemon_21 has a reputation beyond reputemon_21 has a reputation beyond reputemon_21 has a reputation beyond reputemon_21 has a reputation beyond reputemon_21 has a reputation beyond reputemon_21 has a reputation beyond reputemon_21 has a reputation beyond reputemon_21 has a reputation beyond reputemon_21 has a reputation beyond reputemon_21 has a reputation beyond repute
Re: Front brake job questions.

I replaced all four brakes and all four rotors on my jeep without bleeding it. Topping off the master cyclinder prevents air from going inside the line while in the process of bleeding it.

Its not really necessary but it wont hurt you either if you do. As to your brake pads, I have a WJ so I couldnt really comment on it.
__________________

__________________
[SIGPIC][/SIGPIC]
Reply With Quote
  #3  
Old 02-21-2010, 11:52 AM
06HemiLtd's Avatar
Member
 
Join Date: Sep 2009
Location: NW Ohio
Posts: 372
Thanks: 0
Thanked 2 Times in 2 Posts
Rep Power: 2230
06HemiLtd has a reputation beyond repute06HemiLtd has a reputation beyond repute06HemiLtd has a reputation beyond repute
Re: Front brake job questions.

you don't need to bleed the brakes unless you're disconnecting the brake lines or changing calipers. you should still siphon a small amount of brake fluid out of the master cylinder and leave the cap off the reservoir. you'll have to push the pistons back into the caliper which forces the fluid back into the master cylinder.
__________________
Steve-2006 Grand Cherokee Limited-5.7L Hemi-Brute Force CAI-Magnaflow 22" Muffler-Diablosport Predator-SRT8 Rear Sway Bar-Bilsteins-Shorty Billet Antenna-Chrome Turn Signals-Chrome Tow Hooks-Roof Rack-SS Ultras Highs/Lows/Fogs-REC Nav-Commander Shift Knob-20% Tint
Reply With Quote
  #4  
Old 02-21-2010, 11:58 AM
Long Live the Graphite Ghost

 
Join Date: May 2009
Posts: 13,417
Thanks: 55
Thanked 132 Times in 114 Posts
Rep Power: 542602
robpp has disabled reputation
Re: Front brake job questions.

and dont sweat the inner outer stuff, you can figure it out when you take out the old pads by comparing........

and for the master, as stated above, NO Bleeding, but you will push fluid up to the master when you squeeze the pistons so what I do is open the master, and put a substantial rag under it so if it does overfill, it goes on the rag.
__________________
Reply With Quote
  #5  
Old 02-21-2010, 09:26 PM
brent's Avatar
Member
 
Join Date: Sep 2009
Posts: 182
Thanks: 0
Thanked 0 Times in 0 Posts
Rep Power: 1990
brent is on a distinguished road
Re: Front brake job questions.

Thanks! Got the fronts and the rears done today! Nice!
__________________
2007 Jeep Grand Cherokee Overland. Airaid CAI. Magnaflow catback exhaust system. Billet style antenna. Michelin Latitude Tour tires.
Reply With Quote
  #6  
Old 02-21-2010, 10:44 PM
Scottina06's Avatar
JeepGarage Founder
My Jeep: 2014 6.4L SRT8 WK2
 
Join Date: May 2009
Location: Berea, Kentucky
Posts: 48,970
Thanks: 854
Thanked 870 Times in 645 Posts
Rep Power: 7717574
Scottina06 has a reputation beyond reputeScottina06 has a reputation beyond reputeScottina06 has a reputation beyond reputeScottina06 has a reputation beyond reputeScottina06 has a reputation beyond reputeScottina06 has a reputation beyond reputeScottina06 has a reputation beyond reputeScottina06 has a reputation beyond reputeScottina06 has a reputation beyond reputeScottina06 has a reputation beyond reputeScottina06 has a reputation beyond repute
Garage
Re: Front brake job questions.

cool
__________________
SCOTT
The HARDER you work...the LUCKIER you are!
2014 REDLINE red Jeep SRT "BLOODIED Edition" 1 of 1
Previous JEEP rides-
2013 Jeep Grand Cherokee SRT-deep cherry
2013 JKU 10th anniversary-white
2006 Jeep Grand Cherokee Laredo-inferno red



Twitter-The_Jeep_Guy
Instagram-thejeep_guy

Reply With Quote
  #7  
Old 02-22-2010, 10:59 AM
brent's Avatar
Member
 
Join Date: Sep 2009
Posts: 182
Thanks: 0
Thanked 0 Times in 0 Posts
Rep Power: 1990
brent is on a distinguished road
Re: Front brake job questions.

ya, threw some wagner thermoquiets on the back but didn't replace the back rotors. Used some brake clean and a scrubber to (hopefully) remove the existing glaze.

So far, I've been happy with my work. Need to put some miles on them to get them fully broken in but I did go through the bedding procedure possibly erroring on the side of caution.
__________________
2007 Jeep Grand Cherokee Overland. Airaid CAI. Magnaflow catback exhaust system. Billet style antenna. Michelin Latitude Tour tires.
Reply With Quote
  #8  
Old 02-22-2010, 12:37 PM
Rich's Avatar
Member
My Jeep: 2005 5.7L WK
 
Join Date: Dec 2009
Location: CT
Posts: 180
Thanks: 0
Thanked 0 Times in 0 Posts
Rep Power: 1907
Rich is on a distinguished road
Re: Front brake job questions.

I know your done now, nice!
I had similar questions prior to doing my front & rears. I though it was a standard rule of thumb to never push brake fluid back through an abs system? So the advised method would be to crack the bleeder when pushing the pistons back. I did not do this for ease of the job, but is this really not necessary with our setups?
__________________
~Rich
White 05 WK 5.7 Limited

Added: REC Nav w/ In Motion Hack, Sirius, iPod | Mopar CAI | Hardwired V1
Reply With Quote
  #9  
Old 02-22-2010, 12:45 PM
Long Live the Graphite Ghost

 
Join Date: May 2009
Posts: 13,417
Thanks: 55
Thanked 132 Times in 114 Posts
Rep Power: 542602
robpp has disabled reputation
Re: Front brake job questions.

never heard of that, but i am old school. have done dozens of brakes on abs systems. i always just open the master and put a rag under it if it overflows......use a c clamp to compress the pads against the pistons.
__________________
Reply With Quote
  #10  
Old 02-22-2010, 02:11 PM
Rich's Avatar
Member
My Jeep: 2005 5.7L WK
 
Join Date: Dec 2009
Location: CT
Posts: 180
Thanks: 0
Thanked 0 Times in 0 Posts
Rep Power: 1907
Rich is on a distinguished road
Re: Front brake job questions.

Quote:
Originally Posted by robpp View Post
never heard of that, but i am old school. have done dozens of brakes on abs systems. i always just open the master and put a rag under it if it overflows......use a c clamp to compress the pads against the pistons.
Same here, except I "try" to remove excess before it overflows. But just a quick search turns up stuff like this:

http://autorepair.about.com/library/a/1i/bl836i.htm
__________________
~Rich
White 05 WK 5.7 Limited

Added: REC Nav w/ In Motion Hack, Sirius, iPod | Mopar CAI | Hardwired V1
Reply With Quote
  #11  
Old 02-22-2010, 03:30 PM
Member
 
Join Date: Jul 2009
Location: Danville, CA
Posts: 58
Thanks: 0
Thanked 0 Times in 0 Posts
Rep Power: 1973
scottydog has a reputation beyond reputescottydog has a reputation beyond reputescottydog has a reputation beyond repute
Re: Front brake job questions.

I bleed the brakes when I do the pads/rotors. The old fluid collects water and starts looking pretty grim. It's an easy thing to do while the wheel is off. Be sure and use a turkey baster to take out the old fluid from the BMC, then fill with new. You can use a bleeder, or just open the valve and take a break while it gravity drains.

If you squeeze the caliper piston too much the excess pressure can break the ABS. Just do it slowly, or you can open the valve.

Make sure you torque the caliper bolts to 125 ft-lb, slide pins 18.
__________________
Reply With Quote
  #12  
Old 02-23-2010, 12:13 AM
brent's Avatar
Member
 
Join Date: Sep 2009
Posts: 182
Thanks: 0
Thanked 0 Times in 0 Posts
Rep Power: 1990
brent is on a distinguished road
Re: Front brake job questions.

Ya, torqued the caliper bolts to 125 and slide pins to 18.

I may bleed my brake lines this weekend. Sounds like fluid vapor (water) can build up in there and bleeding them should be done when replacing pads. Good article. http://www.stoptech.com/tech_info/wp...edbrakes.shtml

I'll follow this recommendation instead of compressing the calipers since the pads have already been replaced.

Use Mopar brake fluid, or an equivalent quality fluid meeting SAE J1703-F and DOT 3 standards only. Use fresh, clean fluid from a sealed container at all times.

Do not pump the brake pedal at any time while bleeding. Air in the system will be compressed into small bubbles that are distributed throughout the hydraulic system. This will make additional bleeding operations necessary.

Do not allow the master cylinder to run out of fluid during bleed operations. An empty cylinder will allow additional air to be drawn into the system. Check the cylinder fluid level frequently and add fluid as needed.

Bleed only one brake component at a time in the following sequence:

1. Fill the master cylinder reservoir with brake fluid.
2. If calipers are overhauled, open all caliper bleed screws. Then close each bleed screw as fluid starts to drip from it. Top off master cylinder reservoir once more before proceeding.
3. Attach one end of bleed hose to bleed screw and insert opposite end in glass container partially filled with brake fluid . Be sure end of bleed hose is immersed in fluid.




4. Open up bleeder, then have a helper press down the brake pedal. Once the pedal is down close the bleeder. Repeat bleeding until fluid stream is clear and free of bubbles. Then move to the next wheel.

More fun! At least it looks doable without having to jack up the vehicle. Just need a good helper monkey.
__________________

__________________
2007 Jeep Grand Cherokee Overland. Airaid CAI. Magnaflow catback exhaust system. Billet style antenna. Michelin Latitude Tour tires.
Reply With Quote
Reply

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
Trackbacks are Off
Pingbacks are Off
Refbacks are Off


Similar Threads
Thread Thread Starter Forum Replies Last Post
How-To: Rear Brake Pad Job for WK Jeeps JTK1130 Technical Tips/DIY/How-To 55 08-19-2013 01:11 PM
How-To: Change Front Brake Pads (WK) Matt Technical Tips/DIY/How-To 45 06-26-2012 05:27 PM
Got a PT job detailing NHWK05 Detailing 17 08-04-2009 08:15 PM

Powered by vBadvanced CMPS v3.2.3

All times are GMT -5. The time now is 06:16 AM.


Powered by vBulletin® Version 3.8.8 Beta 4
Copyright ©2000 - 2014, vBulletin Solutions, Inc.
Copyright 2012 - JeepGarage.Org
The Jeep Grand Cherokee Owners Community