PeachParts Mercedes-Benz Forum - View Single Post - help on pulling head to replace a head gasket

mplafleur · #7 12-30-2009, 07:30 PM

I removed the vacuum pump so that the timing chain would not move as the roller bearing is pressing against the timing device. I don't know why they didn't design it so that at TDC, the roller would be at a valley so that it wouldn't disturb the timing.

I would take no chance that the timing chain move. Once it does, you're screwed. Removing the vacuum pump is easy.

Keeping the sprocket on the chain only gets in my way, it's up to the DIYer to determine what's comfortable for them.

I didn't mark the chain/sprocket or tie the sprocket to the chain. I just tried the sprocket a few times in different positions until it matched up with the cam at TDC.