1st Generation Specific (1979-1985) 1979-1985 Discussion including performance modifications and technical support sections

front brake caliper bolt

Thread Tools
 
Search this Thread
 
Old 05-24-11, 01:40 PM
  #1  
I need a cheaper hobby...

Thread Starter
iTrader: (14)
 
cshaw07's Avatar
 
Join Date: Aug 2010
Location: East Palestine, Oh
Posts: 1,416
Likes: 0
Received 3 Likes on 3 Posts
front brake caliper bolt

so whats the trick to getting the caliper bracket bolt off? i ground down and bent a wrench as well as ground the bracket plate a little and still cant get it off.
Old 05-24-11, 01:49 PM
  #2  
Spankin' the Wank

iTrader: (21)
 
highnitro12187's Avatar
 
Join Date: Dec 2007
Location: Dallas, Texas
Posts: 541
Received 2 Likes on 2 Posts
take off the bottom two bolts the hold the strut assembly onto the control arm, the rotate the hub til you can easily get to the bolt.
Old 05-24-11, 01:55 PM
  #3  
meh.
iTrader: (2)
 
deadphoenix52's Avatar
 
Join Date: Aug 2009
Location: fwb, fl
Posts: 459
Likes: 0
Received 0 Likes on 0 Posts
i just finished replacing every single part of my braking system. i tried the above but after one bolt was out decided not to continue. i was able to loosen the bolt from the bracket and easily slide it out because the rotors were so worn, when i put the new rotors in i had no such luck, so i loosened the rotor. removed the dust cap, cotter pin and nut. slid the rotor out just enough to be able to slide the caliper bracket out without removing the bolt
Old 05-24-11, 07:14 PM
  #4  
Moderator

iTrader: (3)
 
j9fd3s's Avatar
 
Join Date: Mar 2001
Location: https://www2.mazda.com/en/100th/
Posts: 30,805
Received 2,578 Likes on 1,831 Posts
Originally Posted by highnitro12187
take off the bottom two bolts the hold the strut assembly onto the control arm, the rotate the hub til you can easily get to the bolt.
+1.
Old 05-24-11, 09:26 PM
  #5  
Junior Member
 
8512a's Avatar
 
Join Date: May 2011
Location: washington, dc
Posts: 4
Likes: 0
Received 0 Likes on 0 Posts
one of these woked great for me, no grinding or taking off unnecessary parts
Old 05-24-11, 10:09 PM
  #6  
Have RX-7, will restore


iTrader: (91)
 
mazdaverx713b's Avatar
 
Join Date: Oct 2003
Location: Ohio
Posts: 21,705
Received 1,050 Likes on 890 Posts
all i do is grind the caliper bracket's lip that prevents a wrench from seating on the head of the bolt. its not structural and after its ground i heat the outer area around the bolt with map gas and it comes free with minimal effort. removing the two lower strut bolts can be impossible at times, especially when 7's have seen road salt and are corroded. mine were seized in so much that i had to weld another nut to the bolt head to expand it enough to even budge the bolt and the surrounding metal around the bolt was red hot.
Old 05-25-11, 06:20 AM
  #7  
I need a cheaper hobby...

Thread Starter
iTrader: (14)
 
cshaw07's Avatar
 
Join Date: Aug 2010
Location: East Palestine, Oh
Posts: 1,416
Likes: 0
Received 3 Likes on 3 Posts
i tried to remove the bottom two bolt first but it aint happenin' lol i guess ill just have to grind the bracket more, its just a pain to get my grinder in there good enough, i figured there was an easier way. after about 5 min of looking at it i just thought "wtf was mazda thinking" haha
Old 05-25-11, 09:06 AM
  #8  
Slave to the Rotor!

iTrader: (8)
 
81WideMariah's Avatar
 
Join Date: Jul 2006
Location: Orlando/Winter Park
Posts: 849
Likes: 0
Received 1 Like on 1 Post
Man.... sorry to put you through so much work Curtis. Makes me glad to be in Florida and not have to deal with road salt and the accompanying rust.
Old 05-25-11, 09:22 AM
  #9  
Total Rotary Domination!

iTrader: (17)
 
Rotaryhaven's Avatar
 
Join Date: Apr 2002
Location: Hampton, Virginia
Posts: 1,916
Likes: 0
Received 1 Like on 1 Post
Originally Posted by j9fd3s
+1.
+2. Good tools and a good breaker bar helps.
Old 05-25-11, 09:49 AM
  #10  
Lives on the Forum

 
Kentetsu's Avatar
 
Join Date: Jun 2004
Location: Grand Rapids Michigan
Posts: 11,359
Received 14 Likes on 11 Posts
I've never understood this problem. Maybe it's the wrench that I use (Craftsman) but I use the box end to break it loose, then the open end to remove it. Never takes more than a couple of minutes.
Old 05-25-11, 10:26 AM
  #11  
Rotary Freak

iTrader: (3)
 
mustanghammer's Avatar
 
Join Date: Nov 2006
Location: Parkville, Mo
Posts: 1,525
Received 230 Likes on 147 Posts
Not all offset box end wrenches are the same. The one that works for me is a 14mm/15mm off set box end wrench made by Cornwell tools. It has the right degree of offset and the tool is thin enough to fit.

If you install G-Force turn in spacers that have ackerman correction this bolt gets easier to get to.

When you reinstall the bolt – clean the threads and use an anti-seize compound so the bolt is easier to deal with next time.
Old 05-25-11, 11:23 AM
  #12  
Spankin' the Wank

iTrader: (21)
 
highnitro12187's Avatar
 
Join Date: Dec 2007
Location: Dallas, Texas
Posts: 541
Received 2 Likes on 2 Posts
Originally Posted by 81WideMariah
Makes me glad to be in Florida and not have to deal with road salt and the accompanying rust.
+1 on no road salt.
Old 05-25-11, 02:16 PM
  #13  
Moderator

iTrader: (3)
 
j9fd3s's Avatar
 
Join Date: Mar 2001
Location: https://www2.mazda.com/en/100th/
Posts: 30,805
Received 2,578 Likes on 1,831 Posts
Originally Posted by mustanghammer
N
When you reinstall the bolt – clean the threads and use an anti-seize compound so the bolt is easier to deal with next time.
this might be a good idea! i just did the brake and clutch masters on my Triumph, and what should have been a simple job turned into a pedalbox+ master cylinder bracket + master cylinder rebuild project. i had to clean the threads of EVERY fastener involved.
Old 05-25-11, 08:57 PM
  #14  
Full Member
iTrader: (1)
 
bob8153's Avatar
 
Join Date: Nov 2009
Location: chicago area
Posts: 60
Likes: 0
Received 0 Likes on 0 Posts
After alot of frustration i made this up, it works great.
Attached Thumbnails front brake caliper bolt-delete-001.jpg   front brake caliper bolt-delete-002.jpg  
Old 05-26-11, 06:57 AM
  #15  
Junior Member
 
8512a's Avatar
 
Join Date: May 2011
Location: washington, dc
Posts: 4
Likes: 0
Received 0 Likes on 0 Posts
Originally Posted by Kentetsu
I've never understood this problem. Maybe it's the wrench that I use (Craftsman) but I use the box end to break it loose, then the open end to remove it. Never takes more than a couple of minutes.


Was meaing to buy a set of 60 degree offset wrenchs, and this was a good opportunity, however i was broke the day i needed them, and ended up with a $20 set of autocraft (advance auto brand) wrenches. the 14/15 from that set fits in there just fine. I assumed a nicer,non ratcheting boxend would also fit, if an autocraft one would. But agreed, all it takes is a wrench.
Old 05-27-11, 01:05 PM
  #16  
Junior Member

 
CorgiSteve's Avatar
 
Join Date: Jul 2009
Location: Nova Scotia
Posts: 40
Likes: 0
Received 0 Likes on 0 Posts
Originally Posted by 8512a
one of these woked great for me, no grinding or taking off unnecessary parts
+1 - worked for me as well
Old 05-28-11, 01:10 AM
  #17  
Rotary Enthusiast

iTrader: (17)
 
Stevan's Avatar
 
Join Date: Sep 2003
Location: Jax, FL.
Posts: 1,041
Likes: 0
Received 1 Like on 1 Post
Removed both front brackets at the junkyard the other day. No special tools.
IIRC I had the wrench between 10 and 12 o'clock. The wrench didn't fit on as good as you would like, and grinding the spindle/plate would make it much better.
Old 05-28-11, 01:14 AM
  #18  
Rotary Enthusiast

iTrader: (17)
 
Stevan's Avatar
 
Join Date: Sep 2003
Location: Jax, FL.
Posts: 1,041
Likes: 0
Received 1 Like on 1 Post
Or make/buy a special wrench, if you're working on a lot of 7s, as opposed to grinding all the 7s
Related Topics
Thread
Thread Starter
Forum
Replies
Last Post
BNR34RB26DETT
Build Threads
42
02-28-18 11:27 AM
Frisky Arab
2nd Generation Specific (1986-1992)
13
08-18-15 05:30 PM



Quick Reply: front brake caliper bolt



All times are GMT -5. The time now is 05:24 PM.