Clean the brake master cylinder

[shueardm]

Does anyone else find it hard to see the brake fluid level?
How do I clean the cylinder so I can see the level ? ( I clean the outside of course )
And can anyone explain what exactly is that little round thing that bobs up and down when fluid is added? Is it a filter? Can I pull it out ?
Sorry for dumb questions, when you never seen one empty it's hard to know.

 

[stick3]

Does anyone else find it hard to see the brake fluid level?
How do I clean the cylinder so I can see the level ? ( I clean the outside of course )
And can anyone explain what exactly is that little round thing that bobs up and down when fluid is added? Is it a filter? Can I pull it out ?
Sorry for dumb questions, when you never seen one empty it's hard to know.

suck out as much as possible using a syringe than wipe using a clean rag or paper towel than refill with new fluid thats how i start when doing a brake flush
that little disc that floats on top of the fluid just push it down

 

[gossie]

If you don’t know what you are doing with BRAKES, touch nothing and go to your local brake specialist and pay for it.

 

[Skylarking]

And can anyone explain what exactly is that little round thing that bobs up and down when fluid is added?

It's a float switch/sensor.

If the brake fluid drops below a set level, the brake level sensor causes a little red lamp to light up within the dash to warn you that your brakes will soon be fubared.

The red lamp is a hint to go see a mechanic unless you 100% know what you are doing and able to fix the problem yourself

 

[Fu Manchu]

If it’s because the plastic is hard to see through, then you can replace the reservoir. Fairly straight forward to do until it needs refilling.

However, when you do that, you will need a high end diagnostic interface tool to bleed the ABS of air. That can only be done with one.

Best to get it done by a workshop.

 

[mechanic]

when you do that, you will need a high end diagnostic interface tool to bleed the ABS of air.

Not true.

The only way air can enter the abs modulator is if you operate the abs without sufficient fluid available. Otherwise, it is completely sealed from the normal braking circuit by valves.

You can flush the system in your driveway to bleed fluid or flush out air in the normal circuit. No need for a scan tool.

However, I agree with the earlier comment that people with little brake system knowledge should not attempt any brake repair on their own.

 

[shueardm]

If you don’t know what you are doing with BRAKES, touch nothing and go to your local brake specialist and pay for it.

Great advice for people who know nothing about what they are touching. That's why I haven't removed it. Thanks for the lecture.,

 

[vc commodore]

Not true.

The only way air can enter the abs modulator is if you operate the abs without sufficient fluid available. Otherwise, it is completely sealed from the normal braking circuit by valves.

You can flush the system in your driveway to bleed fluid or flush out air in the normal circuit. No need for a scan tool.

However, I agree with the earlier comment that people with little brake system knowledge should not attempt any brake repair on their own.

So what you're saying is, even if you remove the reservoir, there is no need to bleed the brakes.

Err, pass on your advise

 

[Lex]

there is no need to bleed the brakes.

Where did he say that?

 

[vc commodore]

Where did he say that?

What happens when you remove the reservoir? A little thing called air