Valve adjustment OM615, 616, 617 FYI. - PeachParts Mercedes-Benz Forum

whunter · #1 11-12-2004, 12:25 PM

Needed every 15000 miles.

FYI: for new members.

It is important, especially for winter starting!!!

If you DIY, do NOT mix up intake and exhaust valve positions while adjusting.
A hand drawn check box diagram to document each valve, intake and exhaust position, will save much confusion and effort.

The feeler gauge goes between the cam shaft and rocker arm, graphic drawing in post #22...

You will find the MB valve wrench set handy, or you can make your own...
Home Made Special Tools, This is where members can share how they made special tools
Home Made Special Tools, This is where members can share how they made special tools - PeachParts Mercedes ShopForum

Anyone willing to post an example of engine performance change bad too good adjustment, or your mistakes will be appreciated.

Thank you.

EDIT:
Some links that are on topic.
Easy valve adjustment
Easy valve adjustment - PeachParts Mercedes ShopForum

valve adjusting wrenches
valve adjusting wrenches - PeachParts Mercedes ShopForum

Adjusting valves on 617 ?
Adjusting valves on 617 ? - PeachParts Mercedes ShopForum

Valve Adjust Tools
Valve Adjust Tools - PeachParts Mercedes ShopForum

Valve Wrenches?
http://www.peachparts.com/shopforum/showthread.php?p=859756

Pictorial - Make valve adjustment wrenches
Pictorial - Make valve adjustment wrenches - PeachParts Mercedes ShopForum

Just adjusted the valves on my 300SD
Just adjusted the valves on my 300SD - PeachParts Mercedes ShopForum

http://www.startekinfo.de/etools/content/tool.jsp?toolno=615%20589%2000%2003%2000

Here is a nice DIY with pictures, but I disagree about using an offset key, IMO you are better served by rolling in a new timing chain.
http://mb.bolinko.org/15/warsztat-mainmenu-32/silnik-om617-mainmenu-75/62-engine-timing-valves/325-inspection-and-adjustment-of-camshaft-timing.html

http://www.peachparts.com/shopforum/diesel-discussion/306648-vlave-wrenches-617-sold-ebay-appear-new-manufacture-not-welded.html

:EDIT 2:
Members requested the following data and attached pictures be added to post #1 for easy access.

OM617.952
COLD adjustment:

Intake 0.10 MM

Exhaust 0.35 MM

Hot adjustment:

Intake 0.15 MM

Exhaust 0.40 MM

*******************

Stripped valve nuts are becoming more common.
http://www.peachparts.com/shopforum/diesel-discussion/347049-stripped-valve-nut.html

.

d.delano · #2 11-12-2004, 12:38 PM

Whatever you do if you are new to this do NOT get the throttle linkage reversed at the lever that goes to the CC actuator. I did that.

tomm9298 · #3 11-12-2004, 12:41 PM

Where is a good place, read that as cheap, to get these bent wrenches. I do not have a shop or a vise to bend new ones.

boneheaddoctor · #4 11-12-2004, 12:55 PM

Quote:

Originally Posted by tomm9298

Where is a good place, read that as cheap, to get these bent wrenches. I do not have a shop or a vise to bend new ones.

I paid $58 for a new 3 piece HAZET set on ebay....................

Wooo Hooo back to the 1,000 post level again.

Pete Burton · #5 11-12-2004, 01:47 PM

what is it that makes valve adjustment difficult without special wrenches? I do admit to grinding down the thickness of 1 old wrench and, all in all, I thought it was pretty easy. Then again, pulling the whole powertrain isn't too bad in my book either, as long as everything isn't dripping with oil. for those of you who have done it with standard wrenches vs. something like a set of hazet wrenches, just how much easier do the wrenches make it? what am I missing?

Pete Burton · #6 11-12-2004, 01:51 PM

I've taken a bunch of digital pictures for stuff like that, and it's nice to know you have it. The wires from the starter, vacuum lines, and spacers for holding the trans cooler lines on the oil pan are other areas which i have found pictures helpful

Brian Carlton · #7 11-12-2004, 01:55 PM

Quote:

Originally Posted by Pete Burton

what is it that makes valve adjustment difficult without special wrenches? I do admit to grinding down the thickness of 1 old wrench and, all in all, I thought it was pretty easy. Then again, pulling the whole powertrain isn't too bad in my book either, as long as everything isn't dripping with oil. for those of you who have done it with standard wrenches vs. something like a set of hazet wrenches, just how much easier do the wrenches make it? what am I missing?

Jeff made me a set of bent wrenches to use for the valve adjustment. I have loaned them to Steve to do the valves on the 300D. Next time you need to do valves, you can borrow them and then you can decide how much of an improvement they are. Nothing like getting someone who has done it with standard wrenches to now try it with the angular ones!

Let me know when you need 'em.

boneheaddoctor · #8 11-12-2004, 01:57 PM

Quote:

Originally Posted by Pete Burton

what is it that makes valve adjustment difficult without special wrenches? I do admit to grinding down the thickness of 1 old wrench and, all in all, I thought it was pretty easy. Then again, pulling the whole powertrain isn't too bad in my book either, as long as everything isn't dripping with oil. for those of you who have done it with standard wrenches vs. something like a set of hazet wrenches, just how much easier do the wrenches make it? what am I missing?

Sometimes the valve wants to rotate.....and if you don't have a friend to hold a screwdrive to jam that you will see. I made wrenches, after having half the valves insist on rotating I went and bought the set.

Some people have no problems with the 2 wrench system, others like me do.

psdsteve · #9 11-12-2004, 10:42 PM

I may be a newbie of sorts with MB's but I don't understand how much different it would be to check the valve lap between the valve and lifter or between the lifter and cam lobe. On most non OHC engines you check it between the valve and the rocker arm.

Please enlighten?

Stephen

whunter · #10 11-13-2004, 02:38 AM

Quote:

Originally Posted by psdsteve

I may be a newbie of sorts with MB's but I don't understand how much different it would be to check the valve lap between the valve and lifter or between the lifter and cam lobe. On most non OHC engines you check it between the valve and the rocker arm.
Please enlighten?
Stephen

Refer to the attached graphic.

A .1mm gap in the blue area will = .05mm in the green area.

The drawing is exaggerated for effect.

Follow the correct OEM procedure for your car...

Note:
Valve lap is between valve face and seat.
You where talking about valve LASH = adjustment.

#11 01-05-2005, 08:31 AM

WHAT DOES IT COST TO HAVE THE VALVES ADJUSTED BY A SHOP??--DENNIS

boneheaddoctor · #12 01-05-2005, 08:48 AM

Quote:

Originally Posted by DENNIS

WHAT DOES IT COST TO HAVE THE VALVES ADJUSTED BY A SHOP??--DENNIS

Way too much!

Pete Burton · #13 01-05-2005, 08:51 AM

Quote:

Originally Posted by DENNIS

WHAT DOES IT COST TO HAVE THE VALVES ADJUSTED BY A SHOP??--DENNIS

who cares? it costs $0.00 to get your hands dirty and make sure it is done right. However, for comparison shoppers, your local dealer probably knows the flat rate for that job off the top of his head.