240z Drum Brakes - Nissan : Datsun ZCar forum :Nissan Z Forum: 240Z to 370Z
User Tag List

 
LinkBack Thread Tools
post #1 of 7 (permalink) Old 09-19-2019, 03:43 PM Thread Starter
Senior Member
 
Join Date: Oct 2015
Location: Denver, Colorado
Posts: 236
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 31 Post(s)
(Thread Starter)
240z Drum Brakes

I have a '71 and I'm redoing the brakes. In the rear, with the adjusters totally backed off, the drum barely fits over the shoes, and even then they scrape a little bit. Could I possibly have shoes from a 280z, or maybe the seller on eBay sent the wrong ones?

My first car was a '64 Beetle with drums all the way around, and Mom's 510 wagon also had rear drums, so I know how they work, but I've never seen any this tight.

Thanks!

Watch your weight or someone might steal it
Acemon is offline  
Sponsored Links
Advertisement
 
post #2 of 7 (permalink) Old 09-19-2019, 03:55 PM
Senior Member
 
Join Date: Sep 2006
Posts: 5,117
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 157 Post(s)
Maybe already done--have you opened the bleeder to relieve the fluid pressure in the cylinder?

zippityzda
dumbestone is offline  
post #3 of 7 (permalink) Old 09-19-2019, 06:57 PM Thread Starter
Senior Member
 
Join Date: Oct 2015
Location: Denver, Colorado
Posts: 236
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 31 Post(s)
(Thread Starter)
Quote:
Originally Posted by dumbestone View Post
Maybe already done--have you opened the bleeder to relieve the fluid pressure in the cylinder?
No fluid in the system. I can see the adjusters are as far back into the cylinders as possible,

Watch your weight or someone might steal it
Acemon is offline  
Sponsored Links
Advertisement
 
post #4 of 7 (permalink) Old 09-19-2019, 10:03 PM
Senior Member
 
dat240sun's Avatar
 
Join Date: Jan 2006
Posts: 232
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 21 Post(s)
Have you stepped on the brakes a couple of times since installing the shoes/drums? Doing so should center the shoes in the drums. Oh, I see you don't have fluid in the system - I think you will need to add it and bleed the system that should get them centered.

12/70 build 240Z
dat240sun is offline  
post #5 of 7 (permalink) Old 09-20-2019, 12:02 AM Thread Starter
Senior Member
 
Join Date: Oct 2015
Location: Denver, Colorado
Posts: 236
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 31 Post(s)
(Thread Starter)
Solved!

I tried a different pair and everything fits. I guess the other ones were just enough out of tolerance that they stuck out too far and blocked the drum. Now it's time for fluid and bleeding and another item checked off the list.
Acemon is offline  
post #6 of 7 (permalink) Old 09-20-2019, 03:30 AM
Senior Member
 
Join Date: Sep 2006
Posts: 5,117
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 157 Post(s)
Take a rubber mallet and hit on the shoe surface all "around". These aren't precision fit and a little tap might move the pins and springs around. .... unless you can now see rub marks on the shoes all around.

zippityzda
dumbestone is offline  
post #7 of 7 (permalink) Old 09-20-2019, 03:42 PM Thread Starter
Senior Member
 
Join Date: Oct 2015
Location: Denver, Colorado
Posts: 236
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 31 Post(s)
(Thread Starter)
Quote:
Originally Posted by dumbestone View Post
Take a rubber mallet and hit on the shoe surface all "around". These aren't precision fit and a little tap might move the pins and springs around. .... unless you can now see rub marks on the shoes all around.
No matter how I shifted the shoes and pins and springs, I needed a mallet to get the drums back on. I even called a friend who is an amazing mechanic and he couldn't make the drums fit and still be able to rotate.

The problem was the steel part of the shoes. The tab at top or bottom (or both) was about 1/16" longer than it should have been and thus pushed the shoes outward just enough to block the drum. The replacement shoes were the correct length and now the drums fit nicely. An alternate fix would have been to grind the tabs ever-so-slightly.

Watch your weight or someone might steal it
Acemon is offline  
Reply

Quick Reply
Message:
Options

Register Now



In order to be able to post messages on the Nissan : Datsun ZCar forum :Nissan Z Forum: 240Z to 370Z 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










Thread Tools
Show Printable Version Show Printable Version
Email this Page Email this Page



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
 


Content Relevant URLs by vBSEO 3.6.1