Developed a leak into the cab from my clutch master cylinder. Assuming it was pitted up inside I picked up a new Aisin from one of the vendors here. (OEM clutch masters are NLA.) When I got it apart the inside of the bore was spotless because I changed out my fluid every two or three years. That's the only reason I'm posting this - to encourage frequent brake/clutch system fluid replacement as there's such a great benefit. My original has been installed for 25 years. All that I needed to do was replace the inner seal as it had taken a "set" from being in the bore so long and maybe a little wear had happened as well. I had a Toyota rebuild kit, which is still available, so I threw it in instead of waiting to find just the inner seal. Below is a pic of the exploded parts and the box from the rebuild kit for a 1/75 - 7/80 FJ40/45, BJ40/45, HJ45, and FJ55 clutch master cylinder. The bagged stuff is what you get in the kit.
Here's a second pic of the original Toyota master and the Aisin aftermarket version. You can see that they're the same part from the same casting. Aisin just has the Teq logo (highlighted in red on the EM) crudely ground off of each unit so that no one can actually say it's aToyota part. It's really obvious in person. Okay, the plastic reservoir has yellowed a bit but it's good for another few years.
Here's a second pic of the original Toyota master and the Aisin aftermarket version. You can see that they're the same part from the same casting. Aisin just has the Teq logo (highlighted in red on the EM) crudely ground off of each unit so that no one can actually say it's aToyota part. It's really obvious in person. Okay, the plastic reservoir has yellowed a bit but it's good for another few years.
- too bad the fix isn’t as cheap and simple.
