Crankshaft Sprocket HELP!!! (4.7 Indy)

They didn't mark it before removing it?

 

I take it this is driving the camshafts ? Hence the cam timing-if that is the case is the cam timing adjustable on slots at the cam sprockets- if so then provided you can get the cam timing right , does it matter where the crank sprocket is ?
Never worked on one but it should be adjustable, bearing in mind it is running 1/2 crank revs. You can adjust bike sprockets on elongated slots on the cam sprockets

 

I think what this effectively does is mean you'll have modify every one of you four cam sprocket alignments to effect proper timing which is too bad if they were very close before you started. Not the end of the world though.

But it's been 18 years since I had my 4.9 V8 all apart so someone like Gene O'Gorman and others can probably give you a more detailed view of what this means now.

 

The Quatroporte III service manual is the best info for rebuilding the V 8 engines. MIE sells these. Most but not all engine do have marks for the sprocket and the corresponding mark is on the oil pump. It is a small 0. Snapon tools makes a puller that will remove the sprocket but there is no tool to my knowledge to re install. MIE also sells a tool for the removal. Cool the crank with dry ice and heat the sprocket to 400 F, you will still need a press to assemble. You can add the timing mark to the sprocket and oil pump after assembly. The cam sprockets at adjustable and are used for the correct timing. There is also a timing mark on the back of the crankshaft to mark TDC and also on the flywheel.

 

+1

 

I looked in the snapon catalog and could not make a positive ID. The one I used looked like the pitman arm pullers. But as I mentioned above MIE sells one that works. You might also ask the people that took yours off what they used. I know a regular two jaw puller does not work very well because the arms that go behind the sprocket are too thick.

 

Alternatively, there is another cheaper alternative.

My mechanic decided that it was too expensive to buy the tool just for the extraction job of the sprocket, so he made it himself. I recall he said he used a bolt and a big nut he had laying in the shop.


Kind regards

Kim
Image Unavailable, Please Login
Image Unavailable, Please Login
Image Unavailable, Please Login
Image Unavailable, Please Login