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FJR Motorcycle Forums
Technical & Mechanical Problems
Help! - Broken Valve on lower end of Fork Cartridge (Gen II)
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<blockquote data-quote="RZ350" data-source="post: 1401801" data-attributes="member: 13475"><p>I had a few minutes in the garage tonight and tested whether teh oild stopper did indeed slip through the end of the teh inner tube... the answer is yes, albeit tight. That is good news and means I don't need to worry about taking the forks completely apart or buying new bushings and seals in the event some of the newly installed parts were damaged during the second disassembly.</p><p></p><p>Other good news (I think!) is I found something drastically wrong with my formerly trusty torque wrench. I decided to give it a quick bench test.</p><p></p><p><img src="https://farm1.staticflickr.com/916/42739679185_70089643de_k.jpg" alt="" class="fr-fic fr-dii fr-draggable " style="" /></p><p></p><p>Using the semi-accurate fish scale method with the torque wrench set at 25 ft-lbs, I recorded a pull of 29.8 pounds before it clicked. Even worse, this was at a 15" moment arm, so the actual torque being applied at a 25 ft-lb setting was 37.25 ft-lbs!!! Well, I think I found my culprit... that's about 50% more torque. Probably time for a new torque wrench, or at least a re-calibration. I just wonder if I have some other fasteners over-torqued elsewhere... eek!</p><p></p><p>When the new valves show up in the mail, I will get them installed and use the proper torque and see how that goes. My next challenge will be breaking the Loctite fitted valves free in the cartridges... sounds like it takes about 500 degrees to melt the red stuff.</p><p></p><p>More to come as a followup.</p></blockquote><p></p>
[QUOTE="RZ350, post: 1401801, member: 13475"] I had a few minutes in the garage tonight and tested whether teh oild stopper did indeed slip through the end of the teh inner tube... the answer is yes, albeit tight. That is good news and means I don't need to worry about taking the forks completely apart or buying new bushings and seals in the event some of the newly installed parts were damaged during the second disassembly. Other good news (I think!) is I found something drastically wrong with my formerly trusty torque wrench. I decided to give it a quick bench test. [IMG]https://farm1.staticflickr.com/916/42739679185_70089643de_k.jpg[/IMG] Using the semi-accurate fish scale method with the torque wrench set at 25 ft-lbs, I recorded a pull of 29.8 pounds before it clicked. Even worse, this was at a 15" moment arm, so the actual torque being applied at a 25 ft-lb setting was 37.25 ft-lbs!!! Well, I think I found my culprit... that's about 50% more torque. Probably time for a new torque wrench, or at least a re-calibration. I just wonder if I have some other fasteners over-torqued elsewhere... eek! When the new valves show up in the mail, I will get them installed and use the proper torque and see how that goes. My next challenge will be breaking the Loctite fitted valves free in the cartridges... sounds like it takes about 500 degrees to melt the red stuff. More to come as a followup. [/QUOTE]
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FJR Motorcycle Forums
Technical & Mechanical Problems
Help! - Broken Valve on lower end of Fork Cartridge (Gen II)
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