new brake master cylinder fail

[Matt1260]

Anyone have ones of these fail before?
Brake Master Cylinder Toyota Land Cruiser 81-3/85 40 60 - JTOutfitters

Not a few hundred miles of use and the brake pedal sunk all of a sudden while driving. No leaks anywhere.

Initially after installing it the secondary cylinder was frozen and I had to press really freaking hard to get it unstuck, and then it worked. What garbage.

 

[Matt1260]

Btw I give a thumbs down for JT Outfitters. The dude doesn't reply to any emails.

 

[SW20]

Any chance it needs to be bleed again, or the bleeding nipple was loose?

 

[ginmtb]

Says Aisin which is good quality Japanese made... maybe you just got a dud. Happens unfortunately. You will find that people prefer supporting vendors that support MUD.

 

[Mr Cimarron]

I had a dud when doing my brakes. It was a typical rock auto one, can’t remember brand. Aisin after that and had no issues.
I have also dealt with JT Outfitters once and will never do it again. The lady on the phone was nice but no one replied to emails before I called.

 

[bikersmurf]

X10 on supporting mud vendors.

If it's something cruiser specific, I'd buy it from them... or another mudder (if used).

 

[oregon fj]

A big problem I have seen over my years of doing brakes, is that if a new master cylinder is going to fail, it does it fairly soon after putting it in service.

Also, I often these days disassemble a new master cylinder for inspection prior to installation. I have found metal shards from machining inside that would have ruined the piston seal in short order.

 

[4x4veteran]

A big problem I have seen over my years of doing brakes, is that if a new master cylinder is going to fail, it does it fairly soon after putting it in service.

Also, I often these days disassemble a new master cylinder for inspection prior to installation. I have found metal shards from machining inside that would have ruined the piston seal in short order.

"I often these days disassemble a new master cylinder for inspection prior to installation". Good thing to do before installing.

Over the years I have found potential problems with not only automotive products I have purchased but other items too.

With something like brakes where yourass in on the line close scrutiny is essential.