Review on Aisin CMT 030 Clutch Master Cylinder by Erick Hernandez

I purchased this and an Aisin CRT-014 slave cylinder to replace original parts on my 1996 Toyota T100. They fit perfectly and work well. I reused an old hydraulic line. I just drained the fluid, removed and replaced parts, added DOT3 brake fluid and bled the line. When reconnecting the hydraulic line, I made sure the nuts fit snugly into the internal threads without using excessive force. Bleeding the line was also fairly easy, it was a one man job and took about 5 minutes with no special tools other than a clear hose (I bought it at a hardware store). Here's how I did the bleed: Connect a 2 foot length of clear hose to the bleed nipple (you can wrap a metal wire around the hose next to the nipple and pull it tight against the nipple; the hose will tend to slip out); Make sure the hose forms a U-shape (it rises about 1 inch above the body of the slave cylinder before dropping into the fluid collection reservoir. Do not let its other end touch the used fluid in the reservoir). Make sure the master cylinder reservoir is always filled with fresh brake fluid from a freshly opened container. When you loosen the bleed valve, gravity drains fluid from the slave cylinder (make sure the pedal is in the up position, inactive position. A pedal in the down position prevents fluid from the reservoir from entering the master cylinder) . If the liquid doesn't drain right away, you may need to pump the pedal several times and leave it in the up position. After 10-20 seconds, a clear liquid without air bubbles will appear at the exit of the nipple. In this case the line was vented. At this point, simply tighten the drain nipple; The pedal should now be firm and functional. That's all! No second person is needed to pump the pedal, no special tool like a vacuum pump. Fluid back pressure in the hose section just behind the nipple prevents air from returning to the slave cylinder. When I was doing a brake line bleed a few years ago, I needed the help of a woman or kids to bleed the brake/clutch pedal with lots of screaming (me) and whining (kids); this is currently a one man job.