I was taking the head off my '88 300E today. Everything was going pretty well until I tried to remove the three bolts holding the camshaft sprocket to the camshaft. A 4 MM Allen socket is too small and a 5MM is too big. I found a 4.5 MM L shaped Allen wrench, and found it to be slightly too large. To aggravate the situation, these bolts seem to be VERY tight.

Is this an odd size? Any suggestions.

Thanks for any help you can offer,

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Larry Bible
'01 C Class, Six Speed
'84 Euro 240D, 523K miles
'88 300E 5 Speed
'81 300D Daughter's Car
Over 800,000 miles in
Mercedes automobiles

I have only found them to be torqx head bolts. I think all of them are supposed to be the t35 or t40.

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Benzmac:
Donnie Drummonds
300E
ASE CERTIFIED MASTER AUTO TECHNICIAN
MERCEDES SPECIALIST 8 YRS
PARTNER IN MERCEDESSHOP.COM
OWNER OF MB AUTOWERKS .COM

Benzmac,

Thanks, I will look a little closer.

Take care,
Larry

Larry, when you get the correct torx socket, put it into the end of each bolt and give each one a brisk tap with a hammer. Had the same problem with mine. Heat and time are the culprits.

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Jeff Lawrence
1989 300e
2000 Dodge Grand Caravan SE