Menu
Home
Forums
New posts
Search forums
What's new
New posts
Latest activity
Members
Current visitors
Log in
Register
What's new
Search
Search
Search titles only
By:
New posts
Search forums
Menu
Log in
Register
Reply to thread
Click here to become an Official Member of BMW Club Malaysia
Download Form
Home
Forums
The BMW Range
5 Series
E34
bigger brakes option for E34
JavaScript is disabled. For a better experience, please enable JavaScript in your browser before proceeding.
You are using an out of date browser. It may not display this or other websites correctly.
You should upgrade or use an
alternative browser
.
Message
<blockquote data-quote="Roberto" data-source="post: 708195" data-attributes="member: 8160"><p>I agree with you if the internal bladder for the brake bomb is punctured, or even if the internal valving is somehow screwed, your brakes will feel heavy. You're not getting much brake assist, which is the purpose of the brake bomb (i.e. brake booster). You can still lock the wheels but your foot will get tired.</p><p></p><p>How do you know your brake bomb is ok ? I found a simple test somewhere on the net. You probably already know about it. </p><p></p><p>a. Drive at high speed.</p><p>b. Toes and top half of the foot on the brake, and heel on the floorboard. i.e. Normal position. Brakes not applied.</p><p>c. Apply brakes hard by PIVOTING your foot on the heel. The front of your foot pushes down the brake pedal. The heel remains on the floorboard. You are not using your hamstrings, your upper leg, or your body. You are not stamping on the brakes. You are only using your calf muscles.</p><p>d. The brakes do NOT feel hard to push. The pedal moves down normally. And if the rest of your braking system is ok, the wheels lock up quickly and easily. A passenger sitting there and unable to see your braking will still feel that the car stops quickly.</p><p></p><p><span style="color: rgb(255,0,0)"><strong>In other words, calf muscles should be enough to brake the car well.</strong></span> If not BMW can't sell the car to chicks and will lose money. <img src="data:image/gif;base64,R0lGODlhAQABAIAAAAAAAP///yH5BAEAAAAALAAAAAABAAEAAAIBRAA7" class="smilie smilie--sprite smilie--sprite1" alt=":)" title="Smile :)" loading="lazy" data-shortname=":)" />) If it is not enough then yes you gotta check that brake booster.</p><p></p><p>-------------------</p><p> </p><p>Another tidbit I found on google while reading through this intensively some time ago (had a brake problem and diagnosis was not clear). A bad brake booster could be caused by a bad master cylinder. The master cylinder has a seal at the back...the portion that fits into the booster. If that seal goes, brake fluid will leak past the seal into the booster. The fluid accumulates, comes into contact with the diaphragm in the booster, and causes it to degrade and eventually rupture. </p><p> </p><p>So if you have a bad brake booster, please check your mc as well before just replacing the booster. You need to replace both at the same time. If you don't check, and it turns out that the mc is the real problem, the new brake booster will eventually be screwed by the mc as well. Big waste of time and money and alot of heartache.</p><p> </p><p>Many workshops do not know about this. In fact many workshops don't know many important things. That is why I hang out on forums. Lots of sifus who are usually forced to learn the hard way (due to problems that remain persistently unfixed by workshops) around, and also people who bump into gold nuggets of information here and there and share it, and instantly everybody benefits.</p></blockquote><p></p>
[QUOTE="Roberto, post: 708195, member: 8160"] I agree with you if the internal bladder for the brake bomb is punctured, or even if the internal valving is somehow screwed, your brakes will feel heavy. You're not getting much brake assist, which is the purpose of the brake bomb (i.e. brake booster). You can still lock the wheels but your foot will get tired. How do you know your brake bomb is ok ? I found a simple test somewhere on the net. You probably already know about it. a. Drive at high speed. b. Toes and top half of the foot on the brake, and heel on the floorboard. i.e. Normal position. Brakes not applied. c. Apply brakes hard by PIVOTING your foot on the heel. The front of your foot pushes down the brake pedal. The heel remains on the floorboard. You are not using your hamstrings, your upper leg, or your body. You are not stamping on the brakes. You are only using your calf muscles. d. The brakes do NOT feel hard to push. The pedal moves down normally. And if the rest of your braking system is ok, the wheels lock up quickly and easily. A passenger sitting there and unable to see your braking will still feel that the car stops quickly. [COLOR=rgb(255,0,0)][B]In other words, calf muscles should be enough to brake the car well.[/B][/COLOR] If not BMW can't sell the car to chicks and will lose money. :)) If it is not enough then yes you gotta check that brake booster. ------------------- Another tidbit I found on google while reading through this intensively some time ago (had a brake problem and diagnosis was not clear). A bad brake booster could be caused by a bad master cylinder. The master cylinder has a seal at the back...the portion that fits into the booster. If that seal goes, brake fluid will leak past the seal into the booster. The fluid accumulates, comes into contact with the diaphragm in the booster, and causes it to degrade and eventually rupture. So if you have a bad brake booster, please check your mc as well before just replacing the booster. You need to replace both at the same time. If you don't check, and it turns out that the mc is the real problem, the new brake booster will eventually be screwed by the mc as well. Big waste of time and money and alot of heartache. Many workshops do not know about this. In fact many workshops don't know many important things. That is why I hang out on forums. Lots of sifus who are usually forced to learn the hard way (due to problems that remain persistently unfixed by workshops) around, and also people who bump into gold nuggets of information here and there and share it, and instantly everybody benefits. [/QUOTE]
Verification
Post reply
Home
Forums
The BMW Range
5 Series
E34
bigger brakes option for E34
Top
Bottom
