WRD Part Missing?

[Kevkeller]

A few months ago I took apart my WRD and I am putting it back together.  I think I might be missing a part.  Can anyone confirm?

I am thinking it is #3.  I don't know where the part might have gone though.

Thanks,  Kevin

[450sl]

yes you are missing the steel ring .

[ja17]

Was this engine running before you took it apart?  When you add the ring, the cold running mixture will be richer.

[Kevkeller]

Yes it was running but a couple of the plungers seized up after sitting so long so I had to remove the pump. 

[A Dalton]

 https://www.sls-hh-shop.de/main/en/mercedes-230-280sl-w113-/07-mech-injection-air-intake-/07-b-injection-pump

[Shvegel]

Looks like this.  Unfortunately I don’t have a spare.  If memory serves you have a lathe?

OD:  1.102”    28mm
ID:   0.472”.   12mm
Total thickness:  0.20”    5.1mm
ID of recess: 0.867”     22mm
Depth or recess:  0.119”   3mm

If you look closely there is a little 45 degree chamfer on the ID at the bottom of the recess.  All other edges deburred only.

[Kevkeller]

Thanks!  I do. Is it aluminum?

You the man.

[Dash808]

Hey Kevin, I'm not far from you if you need one for reference 

[Kevkeller]

Thanks Dash.  I almost hate to admit it but I recently bought a spare FIP. I just didn’t want to take it apart if I didn’t have to.

Where do you live anyway?  I’m in St Louis Heights on Oahu.

[hkollan]

Thanks!  I do. Is it aluminum?

Hi,

It's made out of steel, not aluminium.

Hans

[Shvegel]

Yes steel.  I ended up finding another parts pump I had forgotten about.  I sort of stocked up when I decided to rebuild my pump.  PM me your address and I will send the part to you. I will never use it.

[Kevkeller]

Thank you Hans.

[Dash808]

Thanks Dash.  I almost hate to admit it but I recently bought a spare FIP. I just didn’t want to take it apart if I didn’t have to.

Where do you live anyway?  I’m in St Louis Heights on Oahu.

I've been in Mililani for quite a few years but making the move to the Kailua side of Kaneohe in Sept.  Giving the Pagoda a nice view finally 

We might have to meet up for a cruise one day 

[Tyler S]

Authentic Classics carries the ring. There are 2 versions. The replacement thermostats require a modified ring in order to fit properly. Judging your photo you have an original type WRD thermostat. Link below:

https://www.authenticclassics.com/Seal-Ring-250SL-280SL-Injection-Pump-Thermostat-p/auth-006075.htm

[Kevkeller]

Thanks for the link.