Anticept Posted December 16, 2014 Report Share Posted December 16, 2014 Wurth Zebra clamps are what FD uses from the factory. I have learned to really like them and I buy 100 at a time. You can use them for applying header wrap cloth too. .... but what makes them different? Nobody's answering that Link to comment Share on other sites More sharing options...
Roger Lee Posted December 16, 2014 Report Share Posted December 16, 2014 They don have serrated openings like a hose clamp you buy in a hardware store. Look at the pics I posted and the one on the right has raised ribs. It is a positive engagement and you won't make it slip when tightening and ruin the clamp. Link to comment Share on other sites More sharing options...
Roger Lee Posted December 16, 2014 Report Share Posted December 16, 2014 It has raised ribs that have a positive engagement and you can't over torque it and cause it to strip out as easily as the serrated ones. They also don't cut into the hose. Look at the picture I posted. Link to comment Share on other sites More sharing options...
Runtoeat Posted December 16, 2014 Report Share Posted December 16, 2014 It is surprising how many mechanics will pry a hose off with a screwdriver. Do yourself a favor and discuss this with your mechanic and make sure this is not the method he will use when the 5 year rubber change is done. Better yet, buy the tool below and give this to your mechanic, if he doesn't have one. This will save you chasing coolant leaks after the rubber change that have been caused by damage done to the aluminum tubes. Corey, is this tool similar to what you saw Brett using at LEAF: http://www.amazon.com/Tool-Aid-13860-Hose-Removal/dp/B002YKIZBA Link to comment Share on other sites More sharing options...
Anticept Posted December 16, 2014 Report Share Posted December 16, 2014 It is surprising how many mechanics will pry a hose off with a screwdriver. Do yourself a favor and discuss this with your mechanic and make sure this is not the method he will use when the 5 year rubber change is done. Better yet, buy the tool below and give this to your mechanic, if he doesn't have one. This will save you chasing coolant leaks after the rubber change that have been caused by damage done to the aluminum tubes. Corey, is this tool similar to what you saw Brett using at LEAF: http://www.amazon.com/Tool-Aid-13860-Hose-Removal/dp/B002YKIZBA Yes that's similar. it doesn't have the little hump in it like Brett's. Although I just now realized, I could use a phenolic scraper and cut a stepped seat in it so it fits around various fixtures for hoses.... Link to comment Share on other sites More sharing options...
Rich Posted January 3, 2015 Report Share Posted January 3, 2015 Roger, I have a VERY small drip at the 90* fitting going into the water pump. A drop or two is sometimes found on the nose wheel pant. We'll be leaving from PA to FL for Sebring on Monday the 5th or Tuesday. Is it reason for concern? It just started with the cold wx. Thanks, R Link to comment Share on other sites More sharing options...
Roger Lee Posted January 3, 2015 Report Share Posted January 3, 2015 Not to worry. It most likely is the ceramic water pump seal. Normal in cold weather or during a heating and cooling cycle. If all you see is 1-2 tablespoons no issue. One pint is an issue. Link to comment Share on other sites More sharing options...
Jacques Posted January 3, 2015 Report Share Posted January 3, 2015 but just in case do the test last page on the following 912 cooling system.pdf Link to comment Share on other sites More sharing options...
Rich Posted January 3, 2015 Report Share Posted January 3, 2015 Thank you both for the replies. I may be missing something? The drip is right at the elbow that threads into the water pump. If it was a drip from the seal, where would that show? Will a leak from the seal drip down to make it look like it's coming from the threads on the elbow? I Just want to be sure before I leave. Link to comment Share on other sites More sharing options...
Anticept Posted January 3, 2015 Report Share Posted January 3, 2015 There is a tiny weep hole at the base of the water pump. There is a ceramic seal there inside of the pump, and when it's really cold, it will weep a little. Link to comment Share on other sites More sharing options...
Jacques Posted January 3, 2015 Report Share Posted January 3, 2015 The drip is right at the elbow that threads into the water pump. Rich You write ''the elbow''....but there are 4 that threads at the pump..Is the drip at the threads or at the hose end......OR ...it is the BIG elbow (inlet)that is BOLTED to the pump. IF, the drip comes from the leakage bore,, you would see ( using a miror or boroscope) a stain around the leakage bore hole. I don't know on the Sting how difficult is to look there...here is a picture to help you locate it. Link to comment Share on other sites More sharing options...
Rich Posted January 3, 2015 Report Share Posted January 3, 2015 Jacques, Looking at the left side of the engine from the cockpit (cylnds 2&4). ULS 100HP 912. The 90* metal elbow that treads into the bottom end of the water pump shows the drip. It's not coming from the hose where the hose attaches to the fitting but right at the treads where the fitting is screwed into the pump. There are no other drips or leaks visable. I'm hoping that its just the contraction due to the cold wx. Right now it's just a small drip that shows when the plane sits for awhile. Nothing like a teaspoon, just a drop as when using an eyedropper. I downloaded the test procedure that you sent. Thank you. Link to comment Share on other sites More sharing options...
Roger Lee Posted January 3, 2015 Report Share Posted January 3, 2015 Hi Rich, This can easily be from cold weather metal contraction, but if it never goes away then the elbow will need to be removed and re-installed with Loctite. If you are only seeing a few drops at this time I wouldn't worry about it. Link to comment Share on other sites More sharing options...
Rich Posted January 3, 2015 Report Share Posted January 3, 2015 Thanks Roger and all that replied. It's very much appreciated----R Link to comment Share on other sites More sharing options...
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