CNY_Dave Posted October 28, 2012 Share Posted October 28, 2012 Some goo is seeping out of a crack on the rubber insert on my crank pulley, and it's starting to rub the case. Biggest piece of info I'm looking for- is there a magic spot on the flywheel where the crank can be held? 2nd- I assume the oil seal rides right on the pulley like on every other chain-driven cam engine? I assume the pulley is different from the H4s. Link to comment Share on other sites More sharing options...
Fairtax4me Posted October 28, 2012 Share Posted October 28, 2012 Yes entirely different. The H6 pulley seal is between the inner pulley section and the timing chain cover. There is also a cover on the front of the pulley that has an O ring behind it. Apparently oil leaks past the threads of the bolt and the cover is there to hold it in the pulley. Link to comment Share on other sites More sharing options...
CNY_Dave Posted October 28, 2012 Author Share Posted October 28, 2012 Hmmm, will have to look closer, I don't see what looks like a cover on the pulley. Not sure what you mean by the oil seal- does the oil seal ride on the pulley? Is the oil seal accessible when you pull the pulley? Link to comment Share on other sites More sharing options...
Fairtax4me Posted October 28, 2012 Share Posted October 28, 2012 (edited) As I understand it, the front crankshaft oil seal rides directly on the pulley. Similar to most american V engine designs. This leaves the rear section of the pulley open which can apparently allow oil through the center. The cover is held to the front of the pulley with 4 bolts. Front crank seal: Edited October 28, 2012 by Fairtax4me Link to comment Share on other sites More sharing options...
avk Posted October 28, 2012 Share Posted October 28, 2012 I haven't seen mine, but based on catalog images and application lists, it appears to be a regular seal that rides on crankshaft sealing journal. Is there any other way? Link to comment Share on other sites More sharing options...
Fairtax4me Posted October 28, 2012 Share Posted October 28, 2012 (edited) The seal rides against the inner hub of the harmonic balancer. The inner hub is a polished smooth surface just like the crankshaft journal. Edited October 28, 2012 by Fairtax4me Link to comment Share on other sites More sharing options...
avk Posted October 28, 2012 Share Posted October 28, 2012 Thank you for the pictures. I thought you were saying that the seal was sitting against the flat surface of the pulley. Now I see what you mean. Link to comment Share on other sites More sharing options...
CNY_Dave Posted October 28, 2012 Author Share Posted October 28, 2012 Huh, no cover on the front of my pulley, no oil leaking either. That must be belt-and-suspenders if you use a little sealant on the crank. Link to comment Share on other sites More sharing options...
1 Lucky Texan Posted October 28, 2012 Share Posted October 28, 2012 this has been coming up on some Forums lately so, thought i would ask here; Is there an aftermarket lightweight pulley replacement option like the Impreza guys all have? Link to comment Share on other sites More sharing options...
Fairtax4me Posted October 28, 2012 Share Posted October 28, 2012 Not unless the performance crowd got ahold of a 6 banger. That must be belt-and-suspenders if you use a little sealant on the crank. My thinking as well. The bolt on bits are just extra weight. A little RTV behind the crank bolt washer would solve the whole problem. Back to the original question, since we kinda skipped over it... Holding the crank still I would guess can be done in a similar way to the 4 cyl engines. Look for a hole in the side of the bellhousing to stick a large screwdriver. Otherwise, a prybar in the inspection cover should do it. Or the handy-mans secret weapon, Duct tape. Link to comment Share on other sites More sharing options...
CNY_Dave Posted October 28, 2012 Author Share Posted October 28, 2012 Turns out there are 4 12mm dia holes in the pulley that a factory crank holder uses, looks like they are on a 65mm dia circle, I'm going to build a tool that uses 3/8ths bolts for a little slop (7/16ths would fit). Link to comment Share on other sites More sharing options...
CNY_Dave Posted October 29, 2012 Author Share Posted October 29, 2012 Well, if it's strong enough and I didn't mess up the bolt circle, I should be good to go. I used 3 pieces of 16ga sheet steel, brazed together at the edges and around the clearance hole for the crank pulley bolt socket, 4 3/8ths grade-8 bolts brazed in place on the top only. If they twist I'll have to braze them at the bottom as well, didn't do so because I don't want to weaken them. Link to comment Share on other sites More sharing options...
1 Lucky Texan Posted October 29, 2012 Share Posted October 29, 2012 I thought I had read of some holes in the flexplate that can be used to hold the crank still. also, what about a 'starter bump' for loosening? anyone try that with the H6? Link to comment Share on other sites More sharing options...
CNY_Dave Posted October 29, 2012 Author Share Posted October 29, 2012 I decided since there was a tool, and a pic of the tool, and I love an excuse to fab something, and there's less chance of introducing a new problem, and I hate digging around on the back of the engine, I'd fab something. Link to comment Share on other sites More sharing options...
CNY_Dave Posted November 2, 2012 Author Share Posted November 2, 2012 I got the pulley from the dealer, but I hope I don't need the oil seal or the bolt-cap, they didn't order them. Looks like I'll be putting some silicone sealer on the crank before putting on the pulley so oil doesn't creep out (like on every other timing-chain engine). My pulley holder fits OK, though. Link to comment Share on other sites More sharing options...
CNY_Dave Posted November 7, 2012 Author Share Posted November 7, 2012 Well while changing the oil pan I see I'm paying for the dealer forgetting to order the oil seal and doing the job without it- now I get to do it all over again and put in a new oil seal. Link to comment Share on other sites More sharing options...
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