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Genuine Toyota Aisin brake master cylinders made by Advics

4.9K views 7 replies 4 participants last post by  Bruder  
#1 · (Edited)
I tried to post this in parts for sale, but I couldn't put a price on it, and it would be buried there.

About the only things left on my 87 Turbo with ABS brakes that hasn't been rebuilt are the brake master cylinder and the vacuum booster. I performed the service manual tests and everything passed but still I'm a little concerned after 35 years that the brake master cylinder could go out in the future and where would I find parts. Turns out Toyota and Aisin produce a few parts under a company by the name of Advics. I was trolling eBay for a brake master cylinder and noticed that the part I was looking at had a Toyota Aisin embossed fluid tank. The ABS part number is BMT-360. The non-ABS part number is BMT-106 and costs a little less. The BMT-360 cost me $110 delivered including tax. (Rock Auto has better prices than what I paid, go there first.) The castings on the part are identical to the original one in the car. It's a made in Japan part. The only thing I need to get is the paper gasket from the dealer that fits between the master cylinder and the vacuum booster. That part number is 47275-24010 and costs about $2. Read the online manual for the installation procedure. The push rod has a zero clearance in the back of the master cylinder plunger. It wouldn't hurt to look at the clevis pin inside under the kick panel for wear and to grease it. It's is a good idea to bench bleed a new master cylinder to get the air bubbles out before installation. A flare nut wrench is the best tool to use on brake line nuts. I plan on doing a partial flush with fresh brake fluid in the old master cylinder to push any crud out of the lines before installing the new part so as to not contaminate it. I remove the old fluid from the old master cylinder with a syringe and hose to draw out the black settled crud first. I've had good experience with Valvoline Synthetic DOT 3 & 4 brake fluid. It has a higher boiling point than most. It's also good for clutch master cylinder fluid. Last year I got a dip type moisture tester on eBay to check the fluids. The brake fluid was ok but the clutch fluid was outside the limit and needed to be changed. Moisture can cause corrosion leading to brake failure or brake fade from boiling under high heat conditions.

Check out the pics! It's nice to find a Toyota made part at a reasonable price these days.

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#3 ·
I tried to post this in parts for sale but I couldn't put a price on it and it would be buried there.

About the only things left on my 87 Turbo with ABS that hasn't been rebuilt is the brake master cylinder and the vacuum booster. I performed the manual tests and everything passed but still I'm a little concerned after 35 years that the brake master cylinder could go out in the future and where would I find parts. Turns out Toyota and Aisin produce a few parts under a company by the name of Advics. I was trolling eBay for a master cylinder and noticed that the part I was looking at had a Toyota Aisin embossed fluid tank. The ABS part number is BMT-360. The non-ABS part number is BMT-106 and costs a little less. BMT-360 cost $110 delivered including tax. The castings on the part are identical to the one in the car. It's a made in Japan part. The only thing I need to get is a paper gasket from the dealer and that part number is 47275-24010. Cost is about $2. Read the online manual for the installation. The push rod has a zero clearance in the back of the master cylinder plunger. It wouldn't hurt to look at the clevis pin inside under the kick panel for wear and to grease it. It's is a good idea to bench bleed a new master cylinder to get the air bubbles out before installation. I plan on doing a partial flush with fresh brake fluid on the old system to push any crud out the system before installing the new part so as to not contaminate it. I remove the old fluid from the old master cylinder with a turkey baster to suck out the black settled crud first. I've had good experience with Valvoline Synthetic DOT 3 & 4 brake fluid. It has a higher boiling point than most. It's also good for clutch fluid.

Check out the pics! It's nice to find a Toyota made part at a reasonable price these days.

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Ohh, good find.
 
#5 ·
Just ordered this same master as my larger one kind of sucks with my Lexus setup and pretty much forces me to stomp on the pedal. I figured with adding 8 additional pots to my brake system that a larger master would be in order, but after doing more research, the 95-00 LS400's (my front calipers) use a 25.4mm master and the 01-06 LS430's, which have even bigger brakes (my rear calipers), use an even smaller 23.81mm master; so perhaps 'upgrading' to the larger Centric 130.44724 26.988mm master has done more harm than good. Hoping this 25.4mm OEM master fixes my pedal issues, will update after it's installed.
 
#6 ·
Changing the master cylinder requires using one of those brake booster pushrod tools as shown in the manual to set zero clearance. You can pick up a inexpensive printed one on eBay, or cook up something yourself. It looks like the letter H with a movable centerpiece that is the same height as the 2 sides. Here's a link to the manual showing its use. Click here to go there.