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FJR Motorcycle Forums
Technical & Mechanical Problems
Can a novice Mechanic remove and service the Driveshaft/Gear Coupling/Final Drive? Constant puddles of drive oil under the drive shaft
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<blockquote data-quote="infrared" data-source="post: 1451429" data-attributes="member: 68615"><p>SurvivorGuy,</p><p></p><p>Before doing anything else, engage first gear and put the bike up on the center stand. Remove the upper (filler) plug from the Final Drive and put an oil catch pan on the floor under the rear drive. Go and do non-bike other stuff for half an hour. When you return, see if any hypoid oil has come out of the Final Drive filler hole. If so, then relax; the Final Drive was overfilled, and your "leak" was just excess oil escaping at the FD assembly vent. Wipe away any oil at the filler hole. Replace the filler plug, and all will be good.</p><p></p><p>It is <em>very</em> easy to overfill the Final Drive with hypoid oil. Just rotate the rear wheel as (or before) you fill the Final Drive, and an overfill is <u>guaranteed</u>, with oil "leaking" as a result. You did put the bike into gear before the check, to avoid turning the rear wheel while making make this check.</p><p></p><p>If no hypoid oil comes out of the filler hole after half an hour, and you <u>know</u> the FD was filled correctly lately, see how much hypoid oil it takes to refill the FD correctly. If the FD needs more than an ounce or two, then you have a leak. Clean away any oil on the outside of anything, and spray the area with aerosol body powder spray. Monitor the powder on these surfaces closely, and the powder will show you where the oil is leaking, before oil can get all over everywhere. Repeat the clean-and-powder trick as needed to nail down the location.</p></blockquote><p></p>
[QUOTE="infrared, post: 1451429, member: 68615"] SurvivorGuy, Before doing anything else, engage first gear and put the bike up on the center stand. Remove the upper (filler) plug from the Final Drive and put an oil catch pan on the floor under the rear drive. Go and do non-bike other stuff for half an hour. When you return, see if any hypoid oil has come out of the Final Drive filler hole. If so, then relax; the Final Drive was overfilled, and your "leak" was just excess oil escaping at the FD assembly vent. Wipe away any oil at the filler hole. Replace the filler plug, and all will be good. It is [I]very[/I] easy to overfill the Final Drive with hypoid oil. Just rotate the rear wheel as (or before) you fill the Final Drive, and an overfill is [U]guaranteed[/U], with oil "leaking" as a result. You did put the bike into gear before the check, to avoid turning the rear wheel while making make this check. If no hypoid oil comes out of the filler hole after half an hour, and you [U]know[/U] the FD was filled correctly lately, see how much hypoid oil it takes to refill the FD correctly. If the FD needs more than an ounce or two, then you have a leak. Clean away any oil on the outside of anything, and spray the area with aerosol body powder spray. Monitor the powder on these surfaces closely, and the powder will show you where the oil is leaking, before oil can get all over everywhere. Repeat the clean-and-powder trick as needed to nail down the location. [/QUOTE]
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FJR Motorcycle Forums
Technical & Mechanical Problems
Can a novice Mechanic remove and service the Driveshaft/Gear Coupling/Final Drive? Constant puddles of drive oil under the drive shaft
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