Hello all,

My 300TE (1988) recently developed a valve tapping noise, which I just determined was a worn rocker arm. The cam lobes all look fine, surprisingly, but the old-style rocker arm is garbage (the rocker next to it looks worn too, just not quite as bad). I installed a new-style rocker (with the hardened face) and the noise went away immediately.

To be thorough I'd like to next replace the rest of the old,worn rocker arms, but can I use the newer-style, hardened rockers with the original cam? Or do I need to find old-style replacement rockers? I would like to avoid the expense and hassle of replacing the cam. Any advice is appreciated. Thanks!

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"If God had meant for us to walk, why did he give us feet that fit car pedals?" Sir Sterling Moss

Michael
2014 E63S Estate
2006 SLK55
1995 E500
1986 Porsche 944 turbo

Talk to the service manager or parts people at your local dealer. They would know.

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Regards

Warren

Currently 1965 220Sb, 2002 FORD Crown Vic Police Interceptor

Had 1965 220SEb, 1967 230S, 280SE 4.5, 300SE (W126), 420SEL

ENTER > = (HP RPN)

Not part of the in-crowd since 1952.

I would think putting the hard rockers on would not be an issue.

I also would think that the cam at this point is suspect, though.

If you don't want to change the cam at present I would just do the rockers and realize that down the road the cam probably will need changing too.

Tom W

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[SIGPIC] Diesel loving autocrossing grandpa Architect. 08 Dodge 3/4 ton with Cummins & six speed; I have had about 35 benzes. I have a 39 Studebaker Coupe Express pickup in which I have had installed a 617 turbo and a five speed manual.[SIGPIC]

..I also have a 427 Cobra replica with an aluminum chassis.

The cam looks as-new; no scoring or visible wear.

What concerns me is that in the MBZ service manual it indicates that a hardened cam should be installed with the hardened followers. If I install the hardened followers, is it going to ruin my early cam in a matter of weeks? Are the old-style, softer followers available any more?

__________________
"If God had meant for us to walk, why did he give us feet that fit car pedals?" Sir Sterling Moss

Michael
2014 E63S Estate
2006 SLK55
1995 E500
1986 Porsche 944 turbo

Please chime in if you have any experience with this topic. Thanks

__________________
"If God had meant for us to walk, why did he give us feet that fit car pedals?" Sir Sterling Moss

Michael
2014 E63S Estate
2006 SLK55
1995 E500
1986 Porsche 944 turbo

Since ONLY the special hardened rockers can be purchased from MB, they do approve that!

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MERCEDES Benz Master Guild Technician (6 TIMES)
ASE Master Technician
Mercedes Benz Star Technician (2 times)
44 years foreign automotive repair
27 Years M.B. Shop foreman (dealer)
MB technical information Specialist (15 years)
190E 2.3 16V ITS SCCA race car (sold)
1986 190E 2.3 16V 2.5 (sold)
Retired Moderator

I would replace everything even though you really dont have to so everything wears evenly.

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1986 300SDL, 211K,Dealership serviced its whole life
1991 190E 2.6(120k)
1983 300D(300k)
1977 300D(211k)