RICHARD FIne wrote: > Hello, > I posted this question some time ago, but the settings on my computer were > such that I could get the heading of the answers/questions, but not the > contents of the message.. it's fixed now, so I will try again. > > Is the changing of the timing chain for the the 1987 300D the same as the > earlier model (1980 thru 1985) in that all is needed is to pull the new chain > thru via the old chain, and maybe, if needed, change the tensioner? At how > many miles is recommended (at 200,000?) > > I had my car in the shop (local dealer) to have the steering gearbox > replaced, and I asked about changing the timing gear. I have about 275,000 > miles and I told them I needed an estimate to change the chain. > The manager looked at me funny, and said, We don't change the chain unless it > needs it, your car does not display the signs of needing the chain replaced. > I replied that I rather have it changed than to wait and have it break and > ruin the engine. > He later gave me an estimate, which included changing the gears, and all > related parts. Is this necessary with the 87 300D? All together, with labor, > it was like $1,600.00 to change the timing chain... which I thought was very > excessive. > What is recommended with the 1987 300D engine?
Chain stretch on that engine is easily measured. If the stretch exceeds 4 degrees the chain should be replaced. Average stretch seems to be between 0.5 to 1 degree of stretch per 100,000 miles if oiol is changed at prudent intervals. I've attached the TSB on measuring stretch! Marshall -- Marshall Booth Ph.D. Ass't Prof. (ret.) Univ of Pittsburgh School of Medicine [EMAIL PROTECTED] -------------- next part -------------- A non-text attachment was scrubbed... Name: OM60x_Timing_Chain_TSB.pdf Type: application/pdf Size: 71721 bytes Desc: not available Url : http://okiebenz.com/pipermail/mercedes_okiebenz.com/attachments/20070312/77d6557c/attachment.pdf
