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You don't want the reservoir to overflow in the engine bay. Brake fluid will eat the paint. If you dont have a baster, use a clean bottle cap to scoop out fluid.
I have found the flavor injector (looks like a hypodermic needle for horses) ...left over from fried turkey (from thanksgiving) a very useful tool.
I agree that brake fluid will eat paint like nothing else. My point was that, if you have not added any brake fluid to your reservoir, then the fluid level will return to the normal level. As the pad wears, the fluid flows down and displaces the area where the pad used to be. Thus, when you put new pads on and use a clamp to compress the piston, you are merely displacing the fluid back to its original level. If you have added brake fluid, then the turkey baster is what I prefer. Just don't tell my wife!
Don't forget that brake fluid has a short term life and most auto manufacturers recommend replacing it every two years. It absorbs microscopic levels of water and starts to turn brown. Notice how new fluid is light tan whereas old brake fluid turns brown and eventually black. That is the reason for changing it out.
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Did you really have to remove both pins on the rear calipers? My RX300 rear also was pivot up once the bottom pin was removed. Also, is the RX330 rear caliper also a push piston, or rotating piston that you have to rotate to get back into the caliper? Great job, and nice pics.
'10 MDX blk/blk
'04 LS430 CL blk/blk (I'm on cloud 9)
'99 RX green/beige - (still smashing, but it's the beater)
The rear's 2 pins must be taken out. The design is different from the front. The pins actually are bolted to the caliper. Unlike the front where the pins are bolted to a floating nut. When you take it apart, you'll see.