Delivery Valve Crush Washers - PeachParts Mercedes-Benz Forum

theo3000 · #1 11-23-2008, 11:25 PM

I went to 2 hardware and 2 auto supply stores today, and none of them had the correct size. I asked for 10x14x1.0. Does that sound right? Any suggestions as to where I might find them? I know Phil can get them, but I'd like to avoid the shipping charge on such a small item, and I don't want to pay 4 bucks each from the dealer.

Thanks

compress ignite · #2 11-23-2008, 11:41 PM

Bosch Diesel Service Station

Performance Turbochargers, LLC
8482 Cherry Avenue
Fontana, CA 92335-3028
Phone: (909) 429-7200
Fax: (909) 429-7204
Email: garyhetrick@dieselusa.com
Web Addr: http://www.dieselusa.com
Factory Trained For : DM, CR, VR, J/S

If they can't help you, ask for a referral.

theo3000 · #3 11-23-2008, 11:46 PM

Quote:

Originally Posted by compress ignite

Bosch Diesel Service Station
...
Web Addr: http://www.dieselusa.com
....

Thanks!

I saw a link to "Diesel Radio" on the above site. Looks like I'll have something to listen to at work tomorrow.

jfowler · #4 11-24-2008, 06:14 PM

I found my 1985 300TD still leaked a little around the delivery valve after I replaced the crush washer. I had to torque down on the valve a little harder to make it stop. You may want to look into the proper torque spec on it.

-Jeb
Austin, TX

bob_98sr5 · #5 11-25-2008, 03:04 AM

Quote:

Originally Posted by jfowler

I found my 1985 300TD still leaked a little around the delivery valve after I replaced the crush washer. I had to torque down on the valve a little harder to make it stop. You may want to look into the proper torque spec on it.

-Jeb
Austin, TX

Jeb,

did you also replace the rubber o-ring on the delivery valve itself? 2 out of the 6 of mine had square sided o-rings which caused my leaking.

bob

Diesel911 · #6 11-25-2008, 11:54 AM

Quote:

Originally Posted by bob_98sr5

Jeb,

did you also replace the rubber o-ring on the delivery valve itself? 2 out of the 6 of mine had square sided o-rings which caused my leaking.

bob

The IPs are different on some Models. In the IP on my 84 300D there are no O-rings that seal in the Delivery Valve area and the Crush Washer is located in a different positon.

Look at the first 2 diagrams at the belolw site. In the 1st diagram upper left corner you see item #47; that is the Crush Washer and where it is located on my 84 300D and notice no O-ring.

Diagram 2 the upper left corner you see item #44 the Crush Washer (in adifferent position then on mine) and the O-ring item #35.

http://www.detali.ru/cat/oem_mb2.asp?TP=1&F=123130&M=617%2E912&GA=722%2E118405&GM=716%2E005++++++++++++++717%2E400&CT=M&cat=143&SID=07&SGR=045&SGN=01

TchTchr · #7 11-30-2008, 05:45 PM

Quote:

Originally Posted by compress ignite

Bosch Diesel Service Station

Performance Turbochargers, LLC
8482 Cherry Avenue
Fontana, CA 92335-3028
Phone: (909) 429-7200
Fax: (909) 429-7204
Email: garyhetrick@dieselusa.com
Web Addr: http://www.dieselusa.com
Factory Trained For : DM, CR, VR, J/S

If they can't help you, ask for a referral.

Thanks for the link! They have the fuel filter for my 7.3 F250 for $19.95! I'm going to call Monday for the manufacturer (the page says Racor/Fleetguard) - Ford wants around $50 for the filter.

Diesel911 · #8 11-24-2008, 06:21 PM

The Alloy of the Crush Washers for the Delivery Valves is I believe not as soft as a regular Copper Crush Washer meaning that I would buy the ones that are made for the job.
Does anyone have experience using Generic Crush Washers for the Delivery Valves?

Stevo · #9 11-24-2008, 08:19 PM

I wouldn't use anything but the "official MB" ones, it'll be interesting if someone comes up with a generic one and has run them for a while.

theo3000 · #10 11-24-2008, 10:12 PM

I went to the Bosch service center, and told them I needed the washers. The guy wanted the pump's part number. I told him the the size is 10x14x1, and he said "I need the pump number or an example."

I was puzzled, to say the least, and asked if there were different alloys or something.

He said, "No. There are just too many sizes."

Now, where I come from, a size is a size, and I couldn't figure out what the difficulty was. He went to the back, and brought out a tray of crush washers, took one out of one bag, and another out of a different bag, and asked me which one I needed. They looked identical to the naked eye, but were slightly different sizes. I then realized what he was talking about.

I went to the parking lot and tried to read the pump number, but there was a fuel line in the way, the light wasn't too good, and my eyes aren't the best; so I told the guy I'll get the number and come back. It's like 2 miles from work, so that's pretty handy.

Bottom line - if you go to Bosch, make sure you have your pump number!

Beagle · #11 11-24-2008, 11:46 PM

Quote:

Originally Posted by theo3000

I went to 2 hardware and 2 auto supply stores today, and none of them had the correct size. I asked for 10x14x1.0. Does that sound right?

D-valve seal rings on 123 series MW pumps are made from a 0.50mm precision annealed copper shim and may only be used once. The correct size is 14Ø x 10 x 0.50mm only available from a Bosch agency. Only by using the correct part will the lapped faces between the D-valve and pipe connection be kept parralel to seal at 40-50nm in a single step. Overtightening can distort the pump body and cause rack to stick. NEVER re-use or use a substitute.

theo3000 · #12 11-25-2008, 12:03 AM

Quote:

Originally Posted by Beagle

D-valve seal rings on 123 series MW pumps are made from a 0.50mm precision annealed copper shim and may only be used once. The correct size is 14Ø x 10 x 0.50mm only available from a Bosch agency. Only by using the correct part will the lapped faces between the D-valve and pipe connection be kept parralel to seal at 40-50nm in a single step. Overtightening can distort the pump body and cause rack to stick. NEVER re-use or use a substitute.

Now there's a post that has the sound of au-thor-i-tay!

Thanks for the good info - my car would be a TOTAL waste by now if it wasn't for you guys!

Brian Carlton · #13 11-25-2008, 12:11 AM

Quote:

Originally Posted by Beagle

D-valve seal rings on 123 series MW pumps are made from a 0.50mm precision annealed copper shim and may only be used once. The correct size is 14Ø x 10 x 0.50mm only available from a Bosch agency. Only by using the correct part will the lapped faces between the D-valve and pipe connection be kept parralel to seal at 40-50nm in a single step. Overtightening can distort the pump body and cause rack to stick. NEVER re-use or use a substitute.

.........always a pleasure to see you again.........

shingleback · #14 11-27-2008, 12:16 AM

Quote:

Originally Posted by theo3000

Bottom line - if you go to Bosch, make sure you have your pump number!

And it really helps if you give them the Bosch number; on my 190D it begins with 0400; yours may be the same.

theo3000 · #15 11-27-2008, 12:42 AM

Quote:

Originally Posted by shingleback

And it really helps if you give them the Bosch number; on my 190D it begins with 0400; yours may be the same.

True, that's the number they want. 10 digits.

I got the washers today, and while I was waiting for the guy to find them, I checked out the shop's "lobby". The place has been in San Bernardino since 1951, and is like a diesel museum. Really neat stuff, and everything is soaked with the smell of aged diesel.

They had an IP from a 1925 Cummins, and it probably weighed 700-800 pounds. Sadly, they also had the obituary of the original owner, who ran the shop until he died in 2007. 56 years in the business - I bet that guy had some stories.

Anyways, the washers were 90 cents each. Since the place had a minimum charge of 5 bucks - I got 6. Probably a good idea in case I adjust the IP timing in the future.