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So In doing the water pump replacement I decided to do it the right way and not cut my back cover... and thank God, because here's what I found after I have loosened the crank bolt... So now what do I do? I have looked in PET6 and they have 2 different part numbers for this gear: 944 102 209 11 and 944 102 209 08... but the imprint on my part says 944 102 209 05??? So what to buy. Also maybe one of you guys have it sitting on a shelf somewhere? Please advise and thatnks in advance.
Your pictures appeared just fine. As far as I know, all the crank gears are the same... at least for NA 8v-ers. I've never noted different part numbers or any difference in the gears, but I also have never done an A/B comparison either. That one looks pretty ugly. Probably miss-installed on the key (not at all!), tightened, and driven. I bet the keyway in the crank is chewed too.
What's with that balance gear? It is on backwards, I think. The flanged side goes in and the face plate washer creates the outside flange.
That's the biggest problem with these dear cars. They are cheap enough these days to be owned and maintained by some real ignorant hacks. Looks like you have some work to do to resurect this poor thing, and you're likely to find a lot more of these "creative" interpretations of assembly. Good luck!
RedlineMan.. this is actually not a balance gear... this is the timing gear that sits on a crank... in the picture you can see the remainder of the balance gear sitting in front of it... Thanks for you answer. Anyone have any more suggestions or a part I could buy?
MY! I've seen a couple of really nasty looking balance shaft gears before, that have spun on the crankshaft, butt, not anything like that! It looks like the center stayed put, and something bored the center section out. Part number I show for balance shaft gear is 944.102.209.05, and the smaller camshaft drive gear thats on the crank is 944.105.125.02.
Have ya gotten that camshaft drive gear off of that crank yet? That looks like it might be a little fun doing, with that gear center still on there! Maybe a puller behind the camgear ears will pull it all off together.
Plan on new 5mm key in the crank, and new Oil seal and Oring back there for sure. Hopefully the crankshaft is still ok. Check PET for the correct stack up on these parts. Good luck!
I guess if I had looked a little closer I would have noted that was the crank gear. My comments on differences in crank gears.. and on hacks - still stand though. If that thing puts up a fight, I'd have a small tip on a torch and be heating what's left of that gear very directly.
Actually with a little puller from Autozone it came off pretty easily (I didn't even try without one), but now I have to source a part 944.102.209.05 and I already have a new seal and O rings, so just a matter of replacing them all then water pump and then the the darn gear...
make sure it fits snug on the crank when you put it back on- and torque it to 300lb or whatever it is supposed to be at- probably why it did that. I had a supra crank bolt come loose once, took out the keyway and scraped the inside of the balancer out about 1/32" and made it all loose, then bent the crank bolt...lesson learned.
I still wanna know HOW that gear got sliced out that way! The crankshaft looks alright, I take it? Hows that key and keyway looking in the crank? I've already given away/used or sold all the decent gears I had from my parts cars, so I can't help ya there. Sorry.
Torque on that crank bolt is 155ft lbs. (300 for rear bearings, IIRC). Make sure your using the correct washer under that crank bolt, so it CAN torque up properly. You should be using a washer with an inner step to it. You have any oil pressure issues, prior to tear down?
I wonder if that gear had ever had a center section added to it, at some point prior. Even so, I still can't see how that happened. WOW! Let us know if ya learn anything regarding this.
Early on in my 944 wrenching experience, I've done a stupid mistake that caused something very similar.
If you install the washer behind the crankshaft bolt backwards (the correct way is wider side towards the block), then no matter how tightly you get the crankshaft bolt on, you'll allow a little wiggle room in that gear. That wrong way feels right because it gets the bolt most snug -- so you think.... But instead of snugness, you get a wiggle room.
Now, that gear has a very small indentation for the crankshaft Woodruff key. With the wiggle room, the Woodruff key acts like a saw tooth and eats away at the gear. Also ate my PS pulley.
02-25-2006, 02:03 PM
Help with the ballance drive gear !!!
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