The proper way to adjust your clutch master cylinder.

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wolf0573
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The proper way to adjust your clutch master cylinder.

Post by wolf0573 » Fri Oct 08, 2010 4:58 am

It seems there are some members on here that are misinformed about how to adjust a clutch. :) So here we go!

Is your clutch dragging? Is the engagement on the floor? Does your transmission not want to shift smooth at high rpms? If any or all of these issues sound familiar, here is what you need to do.

Step 1- Check for leaks in the hydraulic system. The areas to look at would be the following:
-Under the dash where the rod coming from the master cylinder goes through the firewall.
-Line fittings at the master cylinder and slave cylinder.
-Slave cylinder itself. The slave cylinder is located on the top of the transmission angled towards the back of the car. To get to it, I would suggest removing some piping such as intake, intercooler, etc. depending on the model you are working on.
Rusty lines are suspect as well. If all of those areas are dry, life is good and proceed to the next step. If you find a leak, replace the leaky part and then proceed to the next step.

Step 2- Bleed the system. Even if you didn't find any leaks, this would be worth while to ensure that you don't have any moisture or air in the system. This process is very similar to bleeding brakes. Do the following in order:
1. Check the reservoir on the clutch master cylinder to make sure it is full.
2. Locate a piece of hose. Vacuum line works well. Slip one end of the hose over the head of the bleeder screw located on the slave cylinder. Submerge the other end of the hose in a container partially filled with brake fluid.
3. Have someone pump the clutch pedal up and down a few times and then hold it down.
4. While the clutch pedal is depressed, crack the bleeder screw open for a second and then close it.
5. If there are bubbles coming out of the end of the hose, repeat 1, 3, and 4 until there are no more bubbles.

Step 3- Adjust the master cylinder. To do this properly, watch the detailed video linked below and follow the steps. The demonstration is geared towards dsm clutch systems but the process is the same for most hydraulic clutch systems including that of a 3/S.

Proper Clutch Adjustment

If you have completed all of this step by step and you are still having dragging issues, unfortunately, it would be time to remove to transmission for further troubleshooting.
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curt_gendron
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Re: The proper way to adjust your clutch master cylinder.

Post by curt_gendron » Fri Oct 08, 2010 12:16 pm

I've moved this write up to the Good Stuff area. And even though you are poking a little fun at the "MN 3/S member of the year" you still can't have his title. :silly:

Thanks for taking the time to do the write up.

later,
Curt
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