How hard is it to adjust valves yourself? are these from mb or from the mercedes source?

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W123 1985 300TD naturally aspirated

Not hard if you have the bent wrenches. It can be done with flat wrenches, but it takes (me) much longer. I did my 2nd adjustment with the bent wrenches and it went much faster than the first time.

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Andrew

1989 Volvo 745- 202K

Could you explain the procedure a bit more? just what are you doing to them,loosening? sorry for the ignorance,local shop charges 100 dollars per car.

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W123 1985 300TD naturally aspirated

http://dieselgiant.com/valveadjustment.htm

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1984 300TD