Well, I am glad I was outbid on the auction for the Phoenix, I think I am going to go for the Motive, pending the answer to my question.
Thanks, guys!
Thanks, guys!
Camry Brake Hydraulics Woes
- Thread starter Lumberg
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You don't need to hold the pedal down with a pressure bleeder.
It is often a lot easier, and just a little bit more expensive, to get a rebuilt caliper as it is to build one yourself. If you have a plastic/phenolic piston involved, it is usually better to go with a rebuilt as costs narrow. If you want to rebuild a caliper yourself, silicone grease works wonderfully as assembly lube, much better than using brake fluid as lube to get things together.
Just a word of caution: Pressure bleeders work great. The problem is some ABS systems are a notorious pain in the *** to bleed successfully. You can get air/garbage stuck in the valve block and it will not dislodge unless you find a way to cycle the valves, and sometimes the pump motor, during the bleed procedure to flush the block. Not saying yout Toyota is one of these, but it might be a good idea to get some more info about bleed procedures.
Have fun, this is a learning experience.
It is often a lot easier, and just a little bit more expensive, to get a rebuilt caliper as it is to build one yourself. If you have a plastic/phenolic piston involved, it is usually better to go with a rebuilt as costs narrow. If you want to rebuild a caliper yourself, silicone grease works wonderfully as assembly lube, much better than using brake fluid as lube to get things together.
Just a word of caution: Pressure bleeders work great. The problem is some ABS systems are a notorious pain in the *** to bleed successfully. You can get air/garbage stuck in the valve block and it will not dislodge unless you find a way to cycle the valves, and sometimes the pump motor, during the bleed procedure to flush the block. Not saying yout Toyota is one of these, but it might be a good idea to get some more info about bleed procedures.
Have fun, this is a learning experience.
Good point. One of the advantages of rebuilding the caliper yourself is that you KNOW it was reassembled using a silicone grease, Sil-Glyde or such. A rebuild caliper may be assembled using brake fluid or a hygroscopic cellulose based grease. Thus the outer part of the piston is vulnerable to moisture that inevitably makes it past the boot. The outer part of the piston is stuck with whatever was used to assemble it, never having it refreshed by new, dry brake fluid. Of course a plastic piston will need to be replaced next rebuild anyhow, maybe even next pad change.
Plastic pistons may not be durable, but reduce usprung weight. Alumninium ones corrode.
Plastic pistons may not be durable, but reduce usprung weight. Alumninium ones corrode.
If the piston can be made of plastic, why can't the whole caliper?
Good question. Well maybe epoxy graphite composites. I think almost all the engine internals have been made of plastic, well maybe a ceramic layer on the top of the piston. The best plastics have a higher heat distortion temperature than aluminum. Aluminum goes to pot little above the boiling point of the fluid.
Am I hearing this correctly? The same reasoning for why plastic could be used for brake calipers also says aluminum couldn't be used for an engine?
Aluminum is used for engines. Cooling is very critical, and over heating problems often cause engine damage.
Quote:
"With all these automatic things to suck out/pump through brake fluid, is there included some kind of adapter that holds the brake pedal down?"
No, not included, but available. It is very expensive though. By the time you pay for it, it has taken years, and many thousands of dollars. Even then it may not work when you need it to. The device will require constant maintenance including bottled water, unlimited pairs of shoes, and exotic vacations and handbags. You won't NEED the device with the Motive, so it's value is practically priceless.
"With all these automatic things to suck out/pump through brake fluid, is there included some kind of adapter that holds the brake pedal down?"
No, not included, but available. It is very expensive though. By the time you pay for it, it has taken years, and many thousands of dollars. Even then it may not work when you need it to. The device will require constant maintenance including bottled water, unlimited pairs of shoes, and exotic vacations and handbags. You won't NEED the device with the Motive, so it's value is practically priceless.
beanoil, LMAO!
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