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General Category => General Discussion => Topic started by: cmgies on June 15, 2016, 12:52:11 PM

Title: V7 Special - seeping drain plug on rear end
Post by: cmgies on June 15, 2016, 12:52:11 PM
Howdy,

Have been noticing some dry oil on my rear rim and today I got down to where I could see the bottom of the rear end and there is wet oil there.  It doesn't seem to leak when parked, but usually has a fair amount of the dry oil on the rear wheel after a vigorous ride.

Any suggestions or similar happenings?

Title: Re: V7 Special - seeping drain plug on rear end
Post by: sib on June 15, 2016, 05:44:14 PM
Advice:  remove the drain bolt, drain the oil, get a NEW crush washer of the specified type (some have an inner rubber lining, some don't), make sure the surfaces of the bolt and around the hole are clean, tighten the bolt to 12 Nm cold, no more, no less.  Replace the oil.  I use the vent opening rather than the oil fill opening, and measure in the correct amount of oil, but that's just my preference.  If you do fill it via the vent opening, again using a NEW correct type of crush washer and tighten the vent correctly, using a torque wrench.  Do it right and your leakage problem will go away.  Don't listen to the folks on this forum who say "real mechanics don't need no stinkin' torque wrenches."  I guess I'm not a real mechanic yet, even after 60 years of wrenching.
Title: Re: V7 Special - seeping drain plug on rear end
Post by: chuck peterson on June 15, 2016, 07:14:43 PM
Right weight? Smallblock is ?
Title: Re: V7 Special - seeping drain plug on rear end
Post by: sib on June 15, 2016, 09:42:05 PM
Quote from: chuck peterson on June 15, 2016, 07:14:43 PM
Right weight? Smallblock is ?
V7 Special bevel box takes 170 mL of SAE 85W-140, API GL-4 and GL-5.  If you use the recommended AGIP GEAR MG oil, it already has the correct amount of high pressure additives, no need to add moly.
Title: Re: V7 Special - seeping drain plug on rear end
Post by: chuck peterson on June 16, 2016, 06:15:30 AM
Small blocks take moly in the rear drive? Haven't seen that...
Title: Re: V7 Special - seeping drain plug on rear end
Post by: sib on June 16, 2016, 06:53:16 AM
Quote from: chuck peterson on June 16, 2016, 06:15:30 AM
Small blocks take moly in the rear drive? Haven't seen that...
Previous to the 1-TB models, the manuals specified addition of moly, but the newer bikes use a newer oil that already includes high pressure additives (maybe moly, maybe something else). [I've corrected my earlier post]
Title: Re: V7 Special - seeping drain plug on rear end
Post by: Toecutter on June 16, 2016, 08:08:35 AM
Watch that. I had what I thought was a weeping drain plug as well... turns out I required a total rebuild of my final drive, at 6000 km. It wouldn't leak when stopped, but would sling oil when riding. I had it in twice before I insisted they inspect the entire assembly.

You still have warranty? Get it checked.