Good job Chuck,

These cars respond to maintance as well as the lack there of.................

Honestly, I forgot about cleaning the cover stem as well as replacing the o-rings. I'll just do that every time now.

Mine is still holding strong.

Take care and congrats.

JCD

I found hard as a rock o-rings on both my 84 & 83 when I bought them. How often are these o-rings supposed to be changed?

__________________
Jeff M.
Mercedes W123 DIY pages are now located here.
1983 / 1984 300D Sold
2000 CLK430 Cabriolet ~58k Sold
2005 Avalanche 4x4 ~66k

Probably overkill, but my Independant MB tech says he changes them every oil change.

JCD

"I found hard as a rock o-rings" ..... LOL
Mine were so hard I actually thought they were made of metal... then I put my exacto blade on them and they shattered into little pieces...
I think the FSM says to renew when putting in a new filter...and make sure your stem is clean.....

On my E300 they come in the box with the oil filter so you change them every time. I still don't understand why Hengst can include them with the 606 filter but not the 616/7.

__________________
Rick Miley
2014 Tesla Model S
2018 Tesla Model 3
2017 Nissan LEAF
Former MB: 99 E300, 86 190E 2.3, 87 300E, 80 240D, 82 204D Euro
Chain Elongation References

Being somewhat new to the 603, are there any similar o-rings on this engine, like the 617 has?

The 603 holds 1.5 bar at idle but will not get to 3.0 until the engine reaches just over 1500 rpm. Is this typical? The 617 gets there at just over 1000 rpm.

Brian,

My car is a 603 ( 87 SDL). 1.5 at idle and 3 very soon after stepping on the pedal. Just over 261K now. Yes it has the o-rings as well.

Chuck

Thanks Chuck. I've got to get them changed.

hi guys.I had a 240 d that stayed at bar 3 at idle all the time.My new to me 300td turbo sat for two years . While trying to start, the pressure stuck at 3.I went about draining the fuel tank replacing fuel filters and oil +filter [amsoil+Wix fullflow]. now oil pressure is about 1.8 at idle and 3 when driving?

wow, great thread to bump! I've got some stuff to check this coming week on my cars now.

btw, it would be great if MB would include those small seals with their oil filters. They even recently stopped putting the drain plug washer in with the filters too and the idiots in my parts department keep giving me the wrong larger ones for the newer vehicles. I've seen MB's parts quality go downhill since the whole chrysler thing. For god sakes how cheap can you get?!

__________________


1980 500SE/AMG Euro
1981 500SEL Euro
1982 380SEL
1983 300TD
1983 500SEC/AMG Euro
1984 500SEC
1984 300TD Euro
1986 190E 2.3-16
1986 190E 2.3
1987 300D
1997 C36 AMG
2003 C320T 4matic

past: 1969 280SE 4.5 | 1978 240D | 1978 300D | 1981 300SD | 1981 300SD | 1982 300CD | 1983 300CD | 1983 300SD | 1983 380SEC | 1984 300D | 1984 300D | 1984 300TD | 1984 500SEL | 1984 300SD | 1985 300D | 1986 300E | 1986 560SEL | 1986 560SEL/Carat | 1987 560SEC | 1991 300D 2.5 | 2006 R350

What O-rings are we talking about? My 1980 300TD N/A has the oil filter housing with the 2 bolts on top. The only o-ring I know of is the large one that goes around the cap. The oil filter itself (Mann 1055) comes with rubber grommet/seals on each end. Am I missing something??

__________________
Bill Reimels
Now down to one:
1972 300SE 3.5 W109 (Euro delivery)

Ut oh, heh. Mine are that hard on mine, I'll be changing those next oil change! I still usually have between 1.8 and 2.0 bar oil pressure at idle though, so they're still working ok.......next change they're getting replaced though.

__________________
-diesel is not just a fuel, its a way of life-
'15 GLK250 Bluetec 118k - mine - (OC-123,800)
'17 Metris(VITO!) - 37k - wifes (OC-41k)
'09 Sprinter 3500 Winnebago View - 62k (OC - 67k)
'13 ML350 Bluetec - 95k - dad's (OC-98k)
'01 SL500 - 103k(km) - dad's (OC-110,000km)
'16 E400 4matic Sedan - 148k - Brothers (OC-155k)

Bill, if that 617 is the same as the newer ones, there are two small o-rings near the bottom end of the hollow shaft that passes through the center of the filter. They are easily mistaken for metal washers if they have been there for several years.

It's a really good idea to point the bottom of the stem at the ground (or into a trash can) when you blow air into the top hole ....... not at your chest like I did. Big spout of oil came right out, showing me that the pipe is clear & I'm a dunce.

Thanks gotcha....

__________________
Bill Reimels
Now down to one:
1972 300SE 3.5 W109 (Euro delivery)