Service Help 12GSA

[hintzir09]

A few service questions for a

1) I just bleed the front and back brakes from only the front and rear master cylinder. I did not touch the ABS control circuit.

Will a proper flushing of just the front and rear cyclinders put enough new fluid in the system where I don't need to bleed the ABS control circuit or are the lines running from the ABS control circuit to the brake a whole different set of fluids? If I do need to also do bleed the ABS control circuit what is the recommended interval?

2) What is a torque spec for the final drive drain.

3) What type of cluth fluid is everyone using? The dealership told me only their "Mineral Oil" (clutch fluid) will work.

4) I just bought a Twinmax throttle body synchronizer and wanted to know when it is recommended to use this? Everytime the valves are adjusted?

I am currently on the road and will be 'til Christmas, so I may not respond right away since I am only using Library computers. Thanks!

[marcopolo]

The BMW maintenance schedules are available online at A&S BMW's website. Just click on "Service Schedules" (crossed tools icon) on the left side of the Home page.

http://www.ascycles.com/

The intervals are: every two years for the front and rear wheel circuits, and every four years for the entire ABS control circuit. You'll find this in the BMW Annual Inspection for the 1200GSA.

As for the clutch, it is indeed mineral oil in the hexheads, but it is not a maintenance item and is not mentioned anywhere in the maintenance schedules as far as I'm aware.

[Semper_Fi]

A few service questions for a

1) I just bleed the front and back brakes from only the front and rear master cylinder. I did not touch the ABS control circuit.


You should also bleed at the caliper and flush the out the lines

Here are two DYI's for you to check out

This is for an R1200RT R1200RT Flush Link (http://www.bmwmoa.org/forum/showthread.php?t=36364)

This is for an R1200R R1200R Flush Link (http://www.bmwmoa.org/forum/showthread.php?t=38825)

Noted they are no GSA, but fundementally you should be able to apply them to your bike.

Will a proper flushing of just the front and rear cyclinders put enough new fluid in the system where I don't need to bleed the ABS control circuit or are the lines running from the ABS control circuit to the brake a whole different set of fluids? If I do need to also do bleed the ABS control circuit what is the recommended interval?

Don't know the year of your bike but the newer hex's do not have a formal ABS flush protocol that I am aware of.



2) What is a torque spec for the final drive drain.

20 Nm or 14.75 ft/lbs

3) What type of cluth fluid is everyone using? The dealership told me only their "Mineral Oil" (clutch fluid) will work.

USE ONLY MINERAL OIL AS STATED BY THE DEALER Anything else will damage the orings in the clutch mastercylinder and other areas.

Also if it is not leaking you really do not have to replace it as it is not hydroscopic as brake fluid. If you do not have a leak in the clutch line - leave it alone

4) I just bought a Twinmax throttle body synchronizer and wanted to know when it is recommended to use this?

Check this excellent DIY by Don Eilenberger - he does a great job explaining everything in understandable detail Throttle Body Sync DIY Link (http://www.bmwmoa.org/forum/showthread.php?t=35446)

Everytime the valves are adjusted? - to make things simple YES

I am currently on the road and will be 'til Christmas, so I may not respond right away since I am only using Library computers. Thanks!

Have a blast out there - if you have more questions just ask. :thumb

Luis

[marcopolo]

Don't know the year of your bike but the newer hex's do not have a formal ABS flush protocol that I am aware of.

Luis

Yes they do; see my first post above (every two years for wheel circuits and every four years for entire ABS control circuit -- as per BMW maintenance schedule).

[hintzir09]

Hey thanks for the help.

Not having to do the ABS control circuit until four years means I don't have to worry about it this trip.

[marchyman]

Yes they do; see my first post above (every two years for wheel circuits and every four years for entire ABS control circuit -- as per BMW maintenance schedule).

There is new and there is newer. iABS II bikes do not have separate wheel and control circuits. The link you posted brings you to the service schedule for iABS I bikes. You can tell by looking at the date at the lower left; 6/2006 for the hexhead schedule I just looked at. iABS II came out in model year 2007, I believe.

The service schedule for the iABS II bikes states:

19369

[marcopolo]

There is new and there is newer. iABS II bikes do not have separate wheel and control circuits. The link you posted brings you to the service schedule for iABS I bikes. You can tell by looking at the date at the lower left; 6/2006 for the hexhead schedule I just looked at. iABS II came out in model year 2007, I believe.

The service schedule for the iABS II bikes states:

19369

Good catch. Thanks for that. Obviously it depends on the model year of bike the OP has. I don't think he said, but it's a 1200 GSA (first came out in 2007 if I recall). The lesson here is that the owner should check the appropriate service schedule for his/her bike.

[deilenberger]

Mark,

The actual lesson might be - if the poster wants accurate info - they should tell us the year/model of their bike. As can be shown by the responses above - while good answers were given, they didn't apply to his bike. The first thing I mumbled to myself when I saw his posting - what year?

The more info people give - the more accurate the answers are likely to be. :hug

HINT: As an easy way to do this without having to remember to do it - include it in your "sig".. then it's aways there.

[hintzir09]

So I am still not clear whether the ABS wheel circuit needs to be flushed or not or whether there is even one.

In A&S Cycle under service schedules there are only listings for a BMW R1200GSAdventure. It does indicate any difference in years.

Under the 12k + Annual it states that there is a wheel circuit front/rear to be flushed.

So do I have an ABSII or ABSI bike?

[marchyman]

Since you have an '07 you don't have a separate wheel circuit to flush/bleed. The A&S schedules are for bike with the "power" or "servo" brakes.

You bled/flushed the brakes. Using the front brake as an example, I assume you removed fluid from the calipers and added new fluid to the reservoir on the handlebar. That worked, no?

If you had a wheel circuit to bleed that would not have worked. Removing fluid from the calipers would not have effected the amount of fluid in the handlebar reservoir. Bikes with a wheel circuit have a second reservoir in the ABS unit under the tank.

[deilenberger]

In A&S Cycle under service schedules there are only listings for a BMW R1200GSAdventure. It does indicate any difference in years.

Under the 12k + Annual it states that there is a wheel circuit front/rear to be flushed.
Look at the date on the service schedule they have posted - IIRC it's dated 2006.

[hintzir09]

You bled/flushed the brakes. Using the front brake as an example, I assume you removed fluid from the calipers and added new fluid to the reservoir on the handlebar. That worked, no?

This is exactly what I did and it worked great!

The A&S schedules are for bike with the "power" or "servo" brakes.


Is there any place where I can get a service schedule for bikes w/o "servo" brakes?

[marchyman]

Is there any place where I can get a service schedule for bikes w/o "servo" brakes?

Buy a copy of the RepROM and print them out. Some dealer or other BMW web presence might have them on line, don't know. You could spend lots of time in google to find out.

If you have a good relationship with your dealer you can ask them for a copy, too.