Brake master cylinder - YotaTech Forums

Notices
86-95 Trucks & 4Runners 2nd/3rd gen pickups, and 1st/2nd gen 4Runners with IFS

Brake master cylinder

Reply

Old 07-13-2018, 08:26 AM
  #1  
Registered User
Thread Starter
 
Join Date: Jun 2015
Posts: 148
Thanked 0 Times in 0 Posts
Brake master cylinder

Recently had squishy brake pedal, Bleed system and good for a couple miles and back to squishy. Inspected system and no leaks visible, so with no further testing bought MC and replaced. The MC I am replacing is an Aisin and does not appear old, it is older then the 3 years I have owned the vehicle, but of unknow age.

Replaced MC, bleed and everything seems ok. But out of curiosity I pulled the old MC apart. The first piston came out with no issue, the 2nd one would not budge. I drilled a hole in the end of the MC and had to beat the 2nd piston out with a rod and hammer, did not come easy.

I don't think that the MC just froze up, that it was good one day and not the next, could be wrong?

My question is if the MC was frozen for some time, why did I not notice anything and is there anyway to check for this condition? Expiring minds need to know.

This is a 93 V6 Cab and Chassis, automatic with a Sea Breeze RV attached to it.
jjrbus is offline  
Reply With Quote
Old 07-13-2018, 08:53 AM
  #2  
Registered User
Thread Starter
 
Join Date: Jun 2015
Posts: 148
Thanked 0 Times in 0 Posts
93 Toyota replacement fuel tank issues.

Ended up in wrong place and do not see how to cancel?

Last edited by jjrbus; 07-13-2018 at 08:55 AM.
jjrbus is offline  
Reply With Quote
Old 07-13-2018, 07:50 PM
  #3  
Registered User
 
mholme's Avatar
 
Join Date: Jun 2015
Posts: 134
Thanks: 0
Thanked 1 Time in 1 Post
Did you remove the set bolt on the side or bottom of the master cylinder? Thatís how you get the 2nd piston out. That and a little light tapping.
Attached Thumbnails Brake master cylinder-83e07684-f7e7-493c-b30e-a7bbc90dea4e.jpeg  
mholme is offline  
Reply With Quote
Old 07-14-2018, 03:31 AM
  #4  
Registered User
Thread Starter
 
Join Date: Jun 2015
Posts: 148
Thanked 0 Times in 0 Posts
Yes, thank you. Did not look like it interfered with piston?
jjrbus is offline  
Reply With Quote
Related Topics
Thread
Thread Starter
Forum
Replies
Last Post
Jloffermann
Items Wanted
2
09-17-2015 11:41 AM
ohio
86-95 Trucks & 4Runners
4
06-30-2010 07:33 PM
Shock5
86-95 Trucks & 4Runners
0
08-11-2006 05:20 AM
drpdmazda
The Classifieds GraveYard
1
07-17-2006 07:56 AM
mackdss
Pre 84 Trucks
2
02-23-2006 02:06 PM


Thread Tools
Search this Thread
Quick Reply: Brake master cylinder


Contact Us Archive Advertising Cookie Policy Privacy Statement Terms of Service

We are a participant in the Amazon Services LLC Associates Program, an affiliate advertising program designed to provide a means for us to earn fees by linking to Amazon.com and affiliated sites.
 
  • Ask a Question
    Get answers from community experts
Question Title:
Description:
Your question will be posted in: