>From one of Marshall's posts -- "John, The failures you are fearing are VERY rare (once it's established you don't have a defective - fast wearing timing chain that were installed in a small percentage of 92-94 Mercedes diesels) if you pay any attention to maintenance. Simply checking the chain is THE way to insure then chain is not worn to the point of needing replacement. Checking the chain stretch will immediately let you know if you are experiencing abnormal chain wear (should average less than 1 degree every 100kmi). Chain stretch rate is a funcion of lubrication and is inversely correlated to oil change interval and the quality of the oil. Injection pump filures are extremely rare unless you play with it! Of all of the 60x engine I know of only 3 or 4 have have failed (I know of a few more that have been BROKEN)."
"Vacuum pump wear rate is also correlated with the quality and cleanliness of the oil. Better oil that's kept clean causes less wear - AND if the vacuum pump is changed every 150-200kmi, the chances of a pump failure is considerably less than 1%. Even if the vacuum pump should fail, fewer than 5% will suffer serious engine damage." "THESE just are not frequent problems." "I've attached the TSB on checking the chain (change the chain if the wear exceeds 4 degrees - TSB says 3, but that was related to checking during the warranty period) but it will be stripped from the list copy." On Sun, Oct 26, 2008 at 12:01 PM, LarryT <[EMAIL PROTECTED]> wrote: > Howdy - > Forgot to include this question - what kind of mileage are people getting on > W124 300D timing chains - using Mobil 1 for at least 1/2 it's total life.? > > I'm at ~160K now and have no reason to think it has stretched - but plan to > check it soon - unless someone says the chains wear out at 100K I don't see > a rush - since I have a fractured leg I'd have to pay a shop to do it and > I'd prefer not to go to that "extreme". ;-) if there's no rush - > > TIA - > > Sincerely, > Larry T (74 911, 91 300D 2.5T) > www.youroil.net Oil Analysis Kits & > Porsche Posters/Weber parts > ----- Original Message ----- From: "LarryT" <[EMAIL PROTECTED]> > To: "Mercedes Discussion List" <mercedes@okiebenz.com> > Sent: Friday, October 24, 2008 9:07 PM > Subject: [MBZ] W124 Timing Chain > > >> Howdy - >> What's the procedure for checking the Timing Chain stretch on my >> W124 (eng. 602-962)? Same as I used on my '78 240D W123? >> My '91 300D 2.5 Turbo has about 160,000 miles on it - while on a steady >> diet of Mobil 1 for the last 60K, unknown before that. >> >> Thanks! >> >> Sincerely, >> Larry T (74 911, 91 300D 2.5T) >> www.youroil.net Oil Analysis Kits & >> Porsche Posters/Weber parts >> _______________________________________ >> http://www.okiebenz.com >> For new parts see official list sponsor: http://www.buymbparts.com/ >> For used parts email [EMAIL PROTECTED] >> >> To Unsubscribe or change delivery options go to: >> http://okiebenz.com/mailman/listinfo/mercedes_okiebenz.com > > > _______________________________________ > http://www.okiebenz.com > For new parts see official list sponsor: http://www.buymbparts.com/ > For used parts email [EMAIL PROTECTED] > > To Unsubscribe or change delivery options go to: > http://okiebenz.com/mailman/listinfo/mercedes_okiebenz.com > -- OK Don, KD5NRO Norman, OK "There are only three sports: bullfighting, motor racing, and mountaineering; all the rest are merely games." - Ernest Hemingway '90 300D (Rattled), '92 300D (Saber), ''97 Ply Grand Voyager (Vincent van-go) _______________________________________ http://www.okiebenz.com For new parts see official list sponsor: http://www.buymbparts.com/ For used parts email [EMAIL PROTECTED] To Unsubscribe or change delivery options go to: http://okiebenz.com/mailman/listinfo/mercedes_okiebenz.com
