Help WithTrailer Brake Maintenance

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LJR

.
Jun 22, 2004
80
Macgregor 26S Dallas, TX
May be a silly question

Chuck, I can only admire your meticulous preparations for sailing season, but I have a question that is probably simplistic and may be out of line. I read with fasination all the thread and the technical knowledge of the participants. Being a simple guy, it almost overloaded me, and I jumped back to the beginning. I'm curious as to why you want to "replace" the brake fluid. Is it dirty, low, missing, etc.? Brake fluid doesn't wear out. It only gets dirty. If that's the problem, I certainly understand. Is it an issue of simply needing to bleed the cylinders? If it's only air bubbles and not dirt, the bled fluid can be captured and reused. Some years ago, as a surrogate father figure for a young lady leaving for college, I instructed her to get everything on her car checked. I further encouraged her, as she got the oil changed, to make sure and get the air in the tires changed. She asked, "WHAT?". I explained that the heat and friction of the tire flex necessitated periodic change of the air to ensure proper action from fresh molecules. She bought it for a while. Before she left, I let her off the hook and we hugged and laughed at our usual silliness. It was that moment of silliness that made me just wonder what causes you are seeing that necessitates "replacing" the brake fluid.
 

LJR

.
Jun 22, 2004
80
Macgregor 26S Dallas, TX
May be a silly question

Chuck, I can only admire your meticulous preparations for sailing season, but I have a question that is probably simplistic and may be out of line. I read with fasination all the thread and the technical knowledge of the participants. Being a simple guy, it almost overloaded me, and I jumped back to the beginning. I'm curious as to why you want to "replace" the brake fluid. Is it dirty, low, missing, etc.? Brake fluid doesn't wear out. It only gets dirty. If that's the problem, I certainly understand. Is it an issue of simply needing to bleed the cylinders? If it's only air bubbles and not dirt, the bled fluid can be captured and reused. Some years ago, as a surrogate father figure for a young lady leaving for college, I instructed her to get everything on her car checked. I further encouraged her, as she got the oil changed, to make sure and get the air in the tires changed. She asked, "WHAT?". I explained that the heat and friction of the tire flex necessitated periodic change of the air to ensure proper action from fresh molecules. She bought it for a while. Before she left, I let her off the hook and we hugged and laughed at our usual silliness. It was that moment of silliness that made me just wonder what causes you are seeing that necessitates "replacing" the brake fluid.
 
C

Chuck

Closure

Closure, I talked with the MacGregor Family today, and they indeed said to use Dot 3, 4, or 5.1. They said manual was old and listed an old spec. Sooo, I will use eather DOT 4 or 5.1, have not made up my mind. mrBob, I did find the web page that said SAE J1703 superseded SAE 70 R1 or R3. Thanks for input. Larry, It has been recomended by Honda motorcycle Co. that you replace ALL fluids every 2 years, clutch, brake, and coolant. The clutch and brakes both use brake fluid on Goldwings. The brake fluid also collects water, that is why the wet boiling point is listed. Race cars are not as concerned with the wet boiling point, but they are with the dry boiling point, because they change their brake fluid on a regular bases. If you ever do brake jobs and rebuild the brake cylinder, I am sure you have found rust in the cylinders. Also the water compresses more than the brake fluid. I hope this helps answer your question, and it was not a silly question. I change the fluid every 2 years on my Goldwing. Braking is very impotant to me. Thanks all for your inputs, Chuck
 
C

Chuck

Closure

Closure, I talked with the MacGregor Family today, and they indeed said to use Dot 3, 4, or 5.1. They said manual was old and listed an old spec. Sooo, I will use eather DOT 4 or 5.1, have not made up my mind. mrBob, I did find the web page that said SAE J1703 superseded SAE 70 R1 or R3. Thanks for input. Larry, It has been recomended by Honda motorcycle Co. that you replace ALL fluids every 2 years, clutch, brake, and coolant. The clutch and brakes both use brake fluid on Goldwings. The brake fluid also collects water, that is why the wet boiling point is listed. Race cars are not as concerned with the wet boiling point, but they are with the dry boiling point, because they change their brake fluid on a regular bases. If you ever do brake jobs and rebuild the brake cylinder, I am sure you have found rust in the cylinders. Also the water compresses more than the brake fluid. I hope this helps answer your question, and it was not a silly question. I change the fluid every 2 years on my Goldwing. Braking is very impotant to me. Thanks all for your inputs, Chuck
 
May 4, 2005
4,062
Macgregor 26d Ft Lauderdale, Fl
Thank you Chuck!

nice wrap up! living in humid south Florida, I change the brake fluid every 4-6 years (on everything with brakes) YES, Brake fluid absorb water (hydroscopic). with ABS brakes today, its so much cheaper that replacing them... But if you don't keep your cars over 5 years, you probably don't need to worry about it. the ATE stuff is popular at the race track, and is cheap enough.. (compared to other parts) and you can use the gold one time, then blue the next to verify full change... and the blue is nice for leak detection. I'll be looking for the 5.1 never seen any yet....
 
May 4, 2005
4,062
Macgregor 26d Ft Lauderdale, Fl
Thank you Chuck!

nice wrap up! living in humid south Florida, I change the brake fluid every 4-6 years (on everything with brakes) YES, Brake fluid absorb water (hydroscopic). with ABS brakes today, its so much cheaper that replacing them... But if you don't keep your cars over 5 years, you probably don't need to worry about it. the ATE stuff is popular at the race track, and is cheap enough.. (compared to other parts) and you can use the gold one time, then blue the next to verify full change... and the blue is nice for leak detection. I'll be looking for the 5.1 never seen any yet....
 
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