Mercedes Fuel Leak - W123 Diesel Injection Pump Delivery Valve O-Ring and Copper Washer Replacement

Рет қаралды 20,673

2 жыл бұрын

I was experiencing leaking fuel from my delivery valve and this video is me repairing it. However, the parts listed below, are for my pump, and my recommendation is you go to a Bosch service center with your pump part number and get the o-ring and copper crush washer from Bosch directly unless you find an online source for your pump.
I ordered a seal kit for my pump from Europe and used the o-rings and crush washer from the kit.
I have an imported Mercedes-Benz, and therefore your pump model may be a little different; but it also might be the same. Here is my diesel injection pump part number for comparison PES5M55C320RS108-1 (Mercedes part number 6170704301).
So i got a great question today asking if the socket was a 33 point as not a 32 point and it is a 33 point. Here is a link to the exact socket I ordered and used:
www.ebay.com/itm/224653250658
Here is a link to the washer and o-ring (it is a kit with a bunch of parts for the pump in it) from the UK (that is where I ordered my kit).
injectionpumps.co.uk/product/...
Mercedes Source had this link for a pack of 10; however he has a video, and it doesn't look like the same delivery valves as my pump (but it probably is the same copper crush washer). You can check it out though here:
mercedessource.com/store/1977...
I also found this on EBAY which should work on this pump:
www.ebay.com/itm/323917702908
www.ebay.com/sch/i.html?_from... (This is a search term that returned two kits that would work)
And then last, but definitely not least, there is a great video by Diesel Mercedes that shows the o-ring and washer replacement on a different pump, but it is the same procedure. You should definitely watch my video and the other video before doing this job.
From Diesel Mercedes KZfaq Channel: ( / @dieselmercedes7507 )
• Mercedes Diesel Inject...
Also, Diesel Mercedes' KZfaq Channel is great, so please check it out. You will be glad you did.
CAUTION: Make sure everything is super clean. Any contamination that you get into the fuel delivery system can be problematic, and accidentally disassembling or unseating the delivery valve beyond the copper wash could require a very costly repair by a Bosch certified diesel injection pump shop.
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Пікірлер: 22

@lorenaswift 8 ай бұрын

Are you sure it is a 32point? I have been looking for the tool but almost all sellers say it is 33 point

@DangerDIY 8 ай бұрын

It is a 33 point. I am very sorry. www.ebay.com/itm/224653250658?mkcid=16&mkevt=1&mkrid=711-127632-2357-0&ssspo=JOZCj3ICQ4y&sssrc=4429486&ssuid=6O4--MuLQza&var=&widget_ver=artemis&media=COPY Here is the exact one I purchase and used. Thank you so much for asking. I’ve updated the description in the video as well.

@glenrichards7175 11 ай бұрын

Very good video, well made, greetings from Australia

@DangerDIY 11 ай бұрын

Thank you! Hope you are having a great week!

@jhakepacatang1225 2 жыл бұрын

Real great hands blessed with skills for that.

@DangerDIY 2 жыл бұрын

Thank you. I was a little worried when I started this job. There are a lot of little things you can mess up on that cause fuel delivery problems. Fortunately I didn’t have any of them occur!!

@gunner678 Жыл бұрын

Good video, greetings from SW France!

@DangerDIY Жыл бұрын

Thank you. Greetings back from Texas. I am glad the video was helpful. Good luck with your W123!

@gunner678 Жыл бұрын

@@DangerDIY actually i have a later W163, but it was helpful none the less. I also have a classic jaguar xj6, which is a whole other animal, the same age as your Mercedes. Thanks for your reply!

@wyattnixonlloyd8570 7 ай бұрын

thanks for a great video!

@DangerDIY 7 ай бұрын

You’re welcome. Thanks for the comment.

@vintage76vipergreenBeetle 2 жыл бұрын

Nice job. 👍

@DangerDIY 2 жыл бұрын

Thank you. I wish my GoPro would have captured my work area. It was so bad when I reviewed the video it was on the air filter for all but a few minutes!! But at least I know to fix it for the next one. Hope you have a good day and thanks for the nice comment!!