I'm trying to replace my timing chain guide rails on my 560sl and am kind of stuck. I've read a lot of other posts on the subject, but still have a few questions.

This one may be stupid, but I'd rather ask it then be sorry. I've fabricated a pin puller out of a 6mm thread bolt some washers and a socket and I guess the theory is that turning the bolt will pull out the pin as the socket (used as a sleeve) bears down on the side of the cylinder head around the pin.

The questions is is there any chance that the pressure could crack the side of the head. Also, I put a lot of force on the head already and the pin didn't budge and the washer at the top of the bolt pulled thru. Any sugestions as to how to go forward?

Thanks,

Steve

that's how I removed them, I used a deep socket slightly larger than the pin. I used plenty of penetrating oil (not WD 40) a heavy washer and tapped the bolt with a light hammer once they break free they come out easy.........
William Rogers......

I used PB Blaster, letting it soak for a couple of hours, then the tapping technique, then a half-turn. Repeat as required.

You also need hardened washers that fit correctly and won't let the bolt pull through - you want the bolt to be pulling the pin, not crushing the washer.

You could put a washer between the socket and the head to distribute the load more evenly.

There are professional grade pullers like this available - try Samstag Sales or AST, both on the web.

__________________
Chuck Taylor
Falls Church VA
'66 200, '66 230SL, '96 SL500. Sold: '81 380SL, '86 300E, '72 250C, '95 C220, 3 '84 280SL's '90 420SEL, '72 280SE, '73 280C, '78 280SE, '70 280SL, '77 450SL, '85 380SL, '87 560SL, '85 380SL, '72 350SL, '96 S500 Coupe

And make sure that the socket you are using for a sleeve is fitting around the outside of the pin allowing it to pull out.

Good luck,

Ideally, you should partly relieve the socket to clear the webbing on the block - a couple of the pins are very close to the web and your puller will be canted over if you do not do this, will not pull perpendicular to the pin and will bend. You can relieve an arc of the socket base on a mill. I would also turn the (usually) tapered top of the socket to be flat for maximum contact area.

Thanks all!

I know what to do now!

Steve