Hello, I'm going to be renewing my chain tensioner tomorrow, I have the FSM instructions and they say to turn the engine to 0 degrees first, other posts/instructions (including my Haynes manual) I've seen don't mention needing to rotate the engine first- obviously not having to get under the car makes life easier so it would be preferable- anyone done this?

cheers.

__________________
1993 320TE M104
---------------------------------------------------
past:

1983 230E W123 M102
1994 E300D S124 OM606 (x2)
1967 250SE W108 M129
1972 280se 3.5 W108 M116
1980 280SE W116 M110
1980 350SE W116 M116
1992 300E W124 M103
1994 E280 W124 M104
----------------------------------------------
"music and women I cannot but give way to, whatever my business" -Pepys

[edit] I initially read the subject as new chain rather than new tensioner.

I suppose at TDC there is less tendency for the cams and IP to be off center as it were and tend to rotate to a relaxed position when chain tension is released.

Sixto
87 300D

Tensioner, not chain...

__________________
1993 320TE M104
---------------------------------------------------
past:

1983 230E W123 M102
1994 E300D S124 OM606 (x2)
1967 250SE W108 M129
1972 280se 3.5 W108 M116
1980 280SE W116 M110
1980 350SE W116 M116
1992 300E W124 M103
1994 E280 W124 M104
----------------------------------------------
"music and women I cannot but give way to, whatever my business" -Pepys

It may be simply to "center" the slack. Heck man, just bump it over until the dot on the balancer appears in the ring. Then R&R it.

Cheers, all done now.

__________________
1993 320TE M104
---------------------------------------------------
past:

1983 230E W123 M102
1994 E300D S124 OM606 (x2)
1967 250SE W108 M129
1972 280se 3.5 W108 M116
1980 280SE W116 M110
1980 350SE W116 M116
1992 300E W124 M103
1994 E280 W124 M104
----------------------------------------------
"music and women I cannot but give way to, whatever my business" -Pepys