ABC Valve Block Removal - Mercedes-Benz Forum
 
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post #1 of 5 (permalink) Old 01-21-2019, 12:51 PM Thread Starter
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ABC Valve Block Removal

I have read all the ABC valve block threads and do not see if anyone has been able to use the Mercedes disconnect tools on the quick snap connectors for the hydraulic lines to the valve blocks?

Tool part numbers are W 230 589 01 33 00 and W 221 589 01 33 00

I did the rear valve block rebuild on my 2005 SL500 last year and believe disconnecting these lines would help a lot.
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post #2 of 5 (permalink) Old 01-21-2019, 12:56 PM Thread Starter
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post #3 of 5 (permalink) Old 07-21-2019, 02:12 PM
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Quick Connect Tool

Quote:
Originally Posted by Pat_Opsahl View Post
I have read all the ABC valve block threads and do not see if anyone has been able to use the Mercedes disconnect tools on the quick snap connectors for the hydraulic lines to the valve blocks?

Tool part numbers are W 230 589 01 33 00 and W 221 589 01 33 00

I did the rear valve block rebuild on my 2005 SL500 last year and believe disconnecting these lines would help a lot.
Considering the date that you sent this, I am sure that you must have figured this out. I found this thread after I had followed the instructions posted on this site for removing the rear valve block and rebuilding it while replacing both accumulators. I learned a lot but I have you to thank for turning my head to the job of a smarter method of reinstalling it.

This lead me to your post. I started life as a Heavy Duty Mechanic who did a lot of work on Caterpillar equipment and hydraulics. As soon as I read your post, I looked carefully at the quick connects, swore at myself for not identifying them sooner before walking into my shop and taking an old 14 mm open ended wrench and grinding it down to 4 mm in thickness so it would work just like the tool that you pictured. I then slipped it into the slot and gripped the black fitting on the steel line and the wrench pulling them towards each other until the collar ring that the wrench was pulling up on moved and released the fitting - very similar to connecting and disconnecting an air tool. I was then able to pull the hose away from the steel line. I was able to assemble all the steel lines on the valve block on the bench and then install it easily by sliding it into place and reconnecting the hoses with the quick connects, I will post this process with better pictures in the appropriate thread.

Thank you for making me think before I did the rest of the ABC system overhaul.
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post #4 of 5 (permalink) Old 07-22-2019, 07:35 AM Thread Starter
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Re: ABC Valve Block Removal

Glad to hear the job was made easier.

After I bought the rebuild kit and tools, I did not rebuild the Valve Block because my care stopped sinking down overnight. I am not sure why?
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post #5 of 5 (permalink) Old 07-23-2019, 04:10 AM
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A piece of dirt or debris was probably lodged in the valve block. It must have dislodged and by all rights is now residing in your ABC filter . Check your fluid. If it is getting brown in color, it is time to do a flush and filter change.
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