Ok...I can't seem to find a definitive answer to which direction the heat shield should go in on the 617's injectors. I went to a pick and pull this morning and found several different 617 engines with several different heat shields. Some had the concave side pointing up...some had it down...

so...which side should go towards the injector....

Picture #1 (left) or Picture #2 (right)

Thanks!

Attached Thumbnails

   

If the drawings in the 617.95 engine manual are accurate, the side depicted in Photo #1 should face the injector.

picture #1, if you put it the other way round you may end up having leaks at the base of the injector......

__________________
Current Garage
2008 Mercedes GL320 CDI 188k mi Repair/Work in progress
1994 S350 160k mi Garage Queen & prepping for repairs
2005 E320 CDI 203k mi Healthy & Daily Driver
1994 S350 357k mi Retried as parts car
1984 300TD 214k mi Blown OM617 Poss OM603 Swap??

Sold
1987 300SDL 200K+
1994 S320 181K mi
2008 E320 Bluetec 127k mi
1999 S420 130K mi
1980 240D 360k mi
15+ Others that has come, stay and gone

GONE, BUT NOT FORGOTTEN
1995 E320 SE 220k mi
1984 300SD 350k mi

Also, if you drop them in they want to flip over. Slide them on a Phillips Screwdriver and stick it into the hole and let it guide the Heat Shield down.
Afterwhich get a Flashlight and take a look down the hole to make sure they are positioned correctly.

__________________
84 300D, 82 Volvo 244Gl Diesel

the concave side goes against the injector. if you hold it up to the tip of the nozzle you can see how it seals. keep a flashlight handy so that after you drop them in you can verify that they are right side up. Did you replace your injector nozzles?

__________________

• 1993 Mercedes-Benz 400E *146,000 Miles*
• 1985 Mercedes-Benz 300SD Turbo Diesel Biodiesel *SOLD @ 346,000 Miles*
• 1984 Mercedes-Benz 300D Turbo Diesel Biodiesel *SOLD @ 284,000 Miles*

The flat side goes against the injector. Look at the prechamber, they sit in them, you should be able to tell.

__________________
2016 Corvette Stingray 2LT
1969 280SE
2023 Ram 1500
2007 Tiara 3200

Apparently, the OP's well thought out plan to avoid descriptive ambiguity has fallen short of expectations!!!

tango.. and Actros... have it correct.

__________________
83 SD

84 CD

If you actually put them up against the injector toe, it will be obvious that #1 is correct.