I wonder if some vibration would help? Would the carbon be hard enough to crack if one could vibrate the plug? Impact wrench or perhaps some homemade or modified tool in an air hammer. Vibrate it a bit but not so hard as to damage something else.
Alternatively - heat. Is there enough room to warm it up good with a torch without hurting anything else? Randy -----Original Message----- From: mercedes-boun...@okiebenz.com [mailto:mercedes-boun...@okiebenz.com]on Behalf Of John Reames Sent: Thursday, January 21, 2010 4:19 PM To: Mercedes Discussion List Subject: Re: [MBZ] OT '95 E300 project - OM606 fun (was oscope) I am not convinced that proper driving habits have much effect, nor am I convinced that penetrating oil applied on the threaded end of the gp will help I've had one snap off. I drive ... Well let's say I would get in far too much trouble with any sort of V8 MB (and leave it at that)... I'd been applying penetrating oil for days, along with turning it through the 1/4 turn that it could move... It started to move, turned maybe 2-3 turns, then it snapped. When using a puller (with a ball-bearing thrust washer), quite a bit of torque was required to extract the remains. The remains vociferously protested extraction, fighting the whole way and screaming in a manner that nails on a blackboard can only dream about... -- John W Reames jwrea...@comcast.net Home: +14106646986 Mobile: +14437915905 On Jan 21, 2010, at 7:08, "Dillon, Meade M CIV SPAWARSYSCEN-ATLANTIC, 53310" <meade.m.dil...@navy.mil> wrote: > Yes, there is that interesting aspect when considering new glow > plugs in > an OM606. A fellow I know in Virginia has a very interesting theory > on > this problem of glow plugs breaking off too easily. He thinks that > the > design of the glow plug promotes carbon build-up on the plug portion > just inside the threads, which forms a ring. This ring of carbon acts > like a compression seal in reverse; as the plug is turned > anti-clockwise, this ring of carbon compresses on the plug and > prevents > it from coming out of the head. My friends solution is (1) liberal > use > of penetrating oil and (2) working the plug slowly in and out so that > the carbon ring can be worn down before it breaks off the plug. > > I believe that proper driving habits can reverse carbon build-up, so I > may leave the glow plugs alone until I've driven the car a bit to > clean > up any carbon that may have built up. > > -Max > > -----Original Message----- > From: mercedes-boun...@okiebenz.com > [mailto:mercedes-boun...@okiebenz.com] On Behalf Of John Reames > Sent: Wednesday, January 20, 2010 4:15 PM > To: Mercedes Discussion List > Subject: Re: [MBZ] OT oscope > > > Don't do anything that would make pulling the head overly difficult > before changing glow plugs on an om606. None of your business how I > know!!! > -- > John W Reames > jwrea...@comcast.net > Home: +14106646986 > Mobile: +14437915905 > > On Jan 20, 2010, at 10:52, "Dillon, Meade M CIV SPAWARSYSCEN-ATLANTIC, > 53310" <meade.m.dil...@navy.mil> wrote: > >> Tinkered with the project a little over the three-day weekend. >> Ordered >> more parts (fuel line O-rings, various fossilized plastic bits). _______________________________________ http://www.okiebenz.com For new and used parts go to www.okiebenz.com To search list archives http://www.okiebenz.com/archive/ To Unsubscribe or change delivery options go to: http://okiebenz.com/mailman/listinfo/mercedes_okiebenz.com _______________________________________ http://www.okiebenz.com For new and used parts go to www.okiebenz.com To search list archives http://www.okiebenz.com/archive/ To Unsubscribe or change delivery options go to: http://okiebenz.com/mailman/listinfo/mercedes_okiebenz.com
