Extreme Terrain
4x4Wire Trail Talk Forums: Jeep, Toyota, Mitsubishi, Pajero, Isuzu, Kia, 4WD, 4x4, SUV, Off-Road and OutdoorWire Forums

Search 4x4Wire



Recent Posts on TrailTalk
Past Mitsu owners who are currently MIA...
by 4x4Wire
Today at 03:45 PM
Toyota Recalls 978,000 vehicles
by robertw
Yesterday at 08:30 PM
Mystery Coolant Leak....
by pcc
02/19/17 11:17 PM
Sportage suspension lift kit
by 4runnernomore
02/19/17 11:03 AM
Rugged Routes Off-Road Satellite Maps Offer Conven
by 4x4Wire
02/17/17 06:51 PM
Montero 9.5 in a Jeep?
by rxinhed
02/17/17 04:21 AM
'93 Sidetrack has me sidetracked!!
by Lha1988
02/16/17 08:42 PM
Support 4x4Wire
New Topics on TrailTalk
Help finding aftermarket Rodeo parts; suggestions?
by Richard
02/18/17 08:31 PM
Rugged Routes Off-Road Satellite Maps Offer Conven
by 4x4Wire
02/17/17 06:51 PM
Montero 9.5 in a Jeep?
by JC93YJ
02/15/17 10:06 AM
How to Add Ground Clearance to Your F-150
by 4x4Wire
02/14/17 12:54 AM
Cleaning out Gen II parts bin
by nvmonty
02/11/17 10:03 PM
Timing Cover Bolts
by Stevie
02/09/17 02:31 AM
4x4 Gallery
Flex test after suspension mods
Clearance check!
Testing the new Kenda Klever 31x10.50x15
My '88
4x4Wire YJ
More News on the 'Wire
4x4Voice
4x4Wire
MUIRNet-News
OutdoorWire
Who's Online
0 registered (), 144 Guests and 9 Spiders online.
Key: Admin, Global Mod, Mod
Forum Stats
14,641 Registered Members
37 Forums
137,034 Topics
1,078,160 Posts

Most users ever online: 368 @ 02/10/17 05:27 AM
Topic Options
Rate This Topic
#499488 - 09/09/04 06:04 AM CJ7 BRAKE PROBLEM
Anonymous
Unregistered

I HAVE A 77 CJ7 4 WHEEL DRUM BRAKES. I PUT NEW SHOES FRONT AND REAR, THEY ARE ADJUSTED CORRECTLY. IT HAD NON POWER BRAKES. I ADDED A POWER BRAKE BOOSTER, NEW, AND A NEW MASTER CYLENDER. I ALSO BLEED THE BRAKES SEVERAL TIMES.
I CAN NOT GET A FIRM PEDAL. ITGOES ABOUT A 1 INCH FROM THE FLOOR BEFORE THE BRAKES ENGAGE AND THEY WILL NOT LOCK UP.
IT FEELS LIKE THE BRAKES ARE WAY OUT OF ADJUSTMENT, BUT I KNOW THEY ARE NOT. PUMPING THE BRAKES DOES NOT MAKE A DIFFERENCE AND IT DOES NOT LOOSE PREASURE WHEN YOU HOLD THE PEDAL DOWN. CAN ANY BODY HELP ME ?
CJ7 BRAKES
Multiple choices allowed


Votes accepted starting: 09/09/04 05:00 AM
View the results of this poll.
Top
From the Off-Road World
#499489 - 09/09/04 06:28 AM Re: CJ7 BRAKE PROBLEM
BigJim Offline
Web Wheeler
Registered: 10/07/03
Posts: 7768
Loc: Central Texas
I'd pick up the wheels one at a time and READJUST them then I would spemd the 4 bucks or so and buy a simple brake vacuum pump and I'd vacuum them till there was frost in hell. With everything you have written you should have a good pedal. It goes to the floor because it is spreading the shoes too much or you have air in the system and the air is compressing allowing to much pedal movement.
Big Jim
Top
#499490 - 09/09/04 07:11 AM Re: CJ7 BRAKE PROBLEM [Re: BigJim]
Anonymous
Unregistered

make sure you adjsut the brakes with the drums on. if you have a lip on the drum you may be under adjsuting. when proporly adjusted there should be a light drag as you turn the hub.
Top
#499491 - 09/09/04 06:22 PM Re: CJ7 BRAKE PROBLEM
valleycat Offline
Body Damage is Cool
Registered: 12/07/03
Posts: 1056
Loc: Phoenix, AZ
this has nothing to do with your question but read this.

http://www.chtopping.com/CustomRod4/
Top
#499492 - 09/10/04 08:19 AM Re: CJ7 BRAKE PROBLEM
Anonymous
Unregistered

after you check the stuff these guys are telling you
make sure you do not have a master cyl. for disc brakes
the one for drum brakes has check valves. if you have
cyl. for front disc you will never get it adjusted.
Top
#499493 - 09/10/04 09:06 AM Re: CJ7 BRAKE PROBLEM
carnuck Offline
Getting the Wheeling Fever
Registered: 12/26/03
Posts: 72
Loc: Seattle, WA
One more thing. You need to readjust the brakes after a short drive and be sure the the Ebrake cables aren't too tight. They will hold the shoes part way off the cylinder and when you hit the brake, the stretch of the cables will act like springs and make them feel mushy. (been there, done that!) Any wear in the backing plates will cock the shoes so they don't seat right too while adjusting.


Oh! A faulty master or one with too small of a bore will affect your brakes too!
_________________________
Build your truck the head men say, but it must be built in such a way...
Top
#499494 - 09/10/04 03:46 PM Re: CJ7 BRAKE PROBLEM
atavuss Offline
Mudrunner
Registered: 02/24/04
Posts: 291
I also have a 77 CJ7, but mine has factory disk brakes on the front, anyone know if that was an option or was it standard on later production 77?
did you bench bleed the master cylinder before you installed it in the vehicle? where did you get the booster and master cylinder at? sure it is the proper application? have you adjusted the rod in the booster (not all boosters have an adjustable rod)?
FWIW, my Jeep never has had a really high and firm pedal........but it does stop good (factory disk on front and factory 11" drums on rear)! I believe there was a recall or TSB when this model was fairly new, something about the booster rod needed adjusting. also, I have been running dot 5 silicone brake fluid for many years.


Edited by atavuss (09/10/04 03:57 PM)
_________________________
04 4x4 Double Cab Tacoma v6 TRD, all stock

77 Jeep CJ7, 304 v8, 33x12.50x15 bfg, 4.10 gears, 44 rear end, ford bronco low range gear mod, warn 6k winch, rubicon tested

1969 M274a5 Military Mechanical Mule

46 Bantam Civilian trailer
Top
#499495 - 09/10/04 06:18 PM Re: CJ7 BRAKE PROBLEM [Re: atavuss]
Anonymous
Unregistered

I have factory discs on my 77. I thought that is the year they switched but, i re did the brakes the guy said it depended on the time of year... ie first 6 months or last 6 months... just a rumour.
Top
#499496 - 09/11/04 05:32 AM Re: CJ7 BRAKE PROBLEM
Anonymous
Unregistered

You have to make sure you have pumped the master cylinder full of brake fluid before you install it or you will pump lots and lots of air into the lines.
Top

Moderator:  4x4Wire 

OutdoorWire Websites

OutdoorWire

OutdoorWire

Portal page for OutdoorWire Access and Landuse Central Read More
4x4Voice

4x4Voice

California off road recreation news and information Read More
MUIRNet News

MUIRNet News

News and information about issues affecting outdoor recreation Read More
4x4Wire

4x4Wire

Off road recreation and 4x4 Technical news and information Read More
TrailTalk

TrailTalk

4x4Wire TrailTalk Forums for a variety of 4x4 tech information Read More
  • 1

4x4Wire Tech Section

Jeep 4x4 Tech

Jeep 4x4 Tech

Jeep Tech from JeepWire Read More
Toyota 4x4 Tech

Toyota 4x4 Tech

Toyota Tech from 4x4Wire Read More
Mitsubishi 4x4 Tech

Mitsubishi 4x4 Tech

Mitsubishi Tech from 4x4Wire Read More
Isuzu 4x4 Tech

Isuzu 4x4 Tech

Isuzu Tech from 4x4Wire Read More
  • 1

Search the 4x4Wire site:




4x4Wire Social: | 4x4Wire on FaceBook | Google+4x4Wire on Google+

OutdoorWire, 4x4Wire, JeepWire, TrailTalk, MUIRNet-News, and 4x4Voice are all trademarks and publications of OutdoorWire, Inc. and MUIRNet Consulting
Copyright (c) 2000-2016 OutdoorWire, Inc and MUIRNet Consulting - All Rights Reserved, no part of this publication may be reproduced in any form without express written permission
You may link freely to this site, but no further use is allowed without the express written permission of the owner of this material.
All corporate trademarks are the property of their respective owners.