---------------------------------------------------------- TeamGrumman-List Digest Archive --- Total Messages Posted Tue 12/13/11: 3 ---------------------------------------------------------- Today's Message Index: ---------------------- 1. 11:58 AM - Here's a good one (Gary Vogt) 2. 01:04 PM - Re: Here's a good one (grumpyparts) 3. 06:43 PM - Re: Re: Here's a good one (Gary Vogt) ________________________________ Message 1 _____________________________________ Time: 11:58:45 AM PST US From: Gary Vogt Subject: TeamGrumman-List: Here's a good one I'm working on an AG5B. -It's serial number 36 so it's a one-of-a-kind ai rplane.=0A=0AThis plane was owned by a guy who did a LOT of formation flyin g. -When I got the plane, it had not any ANY routine maintenance in a ver y long time. -But, that's another story. -Back to formation flying.=0A =0AWhen I first flew this plane, I thought the controls had a lot of play i n them; particularly on the pilots side. -I got under the panel and watch ed the U-joints. -Hmm. -Seems like a lot of play to me. -Maybe it's j ust me. -So, after installing a new airbox [which increases the manifold pressure by up to an inch Hg (never less than .8 inches Hg increase)] I gav e the plane back to its owner to fly for a while. -=0A=0AThe owner also n oted there was a lot of play. -So, I ordered new U-Joint. -Garner warne d me they'd be difficult to drill, and they were. -=0A=0AAfter installing the pilot's side first, I moved the yoke back and forth. -The play was s till there, though not as much; I would say 1/4 inch at the yoke. -I reac hed up to the sprocket for the control chain and there was play between the shaft the u-joint is on and the sprocket. -The only thing that could be is the pin that holds the sprocket to the shaft. -It must be crowded out. -Now, there's a new one. -=0A=0AI disassembled the shaft assembly and it wouldn't come out. -I used a drift into the shaft to knock it out. - It was really stuck. -The roller bearings to the shaft were caked with dr ied grease, the bearings were anything but smooth. -The shaft has a flat spot in it.-=0A=0AI have a complete control assembly from a 79 Tiger. - I took it apart and after 32 years, the grease was still good and the beari ngs smooth. -=0A=0ABob S., what grease was used in 79? -what grease was used in the AG5B?=0A=0AJust a heads up. -If you do a lot of formation fl ying, watch for play in the yokes. ________________________________ Message 2 _____________________________________ Time: 01:04:17 PM PST US Subject: TeamGrumman-List: Re: Here's a good one From: "grumpyparts" When considering buying some pre-drilled universal joints from True Flight, which BTW they didn't have, Loyd passed on this little tip bit. If this is an early AG (before 2003) the insert in the end of the control shaft was solid and would not compress around the universal shaft which allowed slack in the joint. This insert should be modified by cutting a 0.130 inch slot in the bushing. This will allow the shaft and insert to tighten around the end of the universal which will eliminate all of the free-play in the joint. Many have thought the universal was worn when what they actually had was slack in the shaft joint. I would modify the insert, reassemble the control shaft then recheck the amount of play in the universal. Unless the boot on the universal is torn, chances are that the universal is good. Read this topic online here: http://forums.matronics.com/viewtopic.php?p=360866#360866 ________________________________ Message 3 _____________________________________ Time: 06:43:01 PM PST US From: Gary Vogt Subject: Re: TeamGrumman-List: Re: Here's a good one Here is the sprocket and shaft. -No entries in the log books for this sha ft. -It looks like it had been assembled at the factory with the end of t he shaft ground in order to fix an obviously bad pin installation. -I did n't remove the pin. -I did try to wedge the pin to tighten the sprocket. -I wouldn't trust it. -=0A=0ABoth universal joints had some play compar ed to new ones. -The biggest problem was the loose sprocket.=0A=0A=0A____ ____________________________=0A From: grumpyparts =0A PM=0ASubject: TeamGrumman-List: Re: Here's a good one=0A =0A--> TeamGrumma n-List message posted by: "grumpyparts" =0A=0AWhen co nsidering buying some pre-drilled universal joints from True Flight, which BTW they didn't have, Loyd passed on this little tip bit.=0A=0AIf this is a n early AG (before 2003) the insert in the end of the control shaft was sol id and would not compress around the universal shaft which allowed slack in the joint.- This insert should be modified by cutting a 0.130 inch slot in the bushing.- This will allow the shaft and insert to tighten around t he end of the universal which will eliminate all of the free-play in the jo int.- Many have thought the universal was worn when what they actually ha d was slack in the shaft joint.- I would modify the insert, reassemble th e control shaft then recheck the amount of play in the universal.- Unless the boot on the universal is torn, chances are that the universal is good. =0A=0A=0A=0A=0ARead this topic online here:=0A=0Ahttp://forums.matronics.co ================== ------------------------------------------------------------------------------------- Other Matronics Email List Services ------------------------------------------------------------------------------------- Post A New Message teamgrumman-list@matronics.com UN/SUBSCRIBE http://www.matronics.com/subscription List FAQ http://www.matronics.com/FAQ/TeamGrumman-List.htm Web Forum Interface To Lists http://forums.matronics.com Matronics List Wiki http://wiki.matronics.com Full Archive Search Engine http://www.matronics.com/search 7-Day List Browse http://www.matronics.com/browse/teamgrumman-list Browse Digests http://www.matronics.com/digest/teamgrumman-list Browse Other Lists http://www.matronics.com/browse Live Online Chat! http://www.matronics.com/chat Archive Downloading http://www.matronics.com/archives Photo Share http://www.matronics.com/photoshare Other Email Lists http://www.matronics.com/emaillists Contributions http://www.matronics.com/contribution ------------------------------------------------------------------------------------- These Email List Services are sponsored solely by Matronics and through the generous Contributions of its members.