Final drive drip


Information and questions on GL1500 Goldwings (1988-2000)
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GD2
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Final drive drip

Post by GD2 »



I seem to have a drip coming from the square hole in the bottom of the final drive. I checked the shock to make sure that wasn't it, but it's filled with ATF and the leak isn't red.

I found a little info on this problem, but not sure which seal I would need to replace. There are three oil seals listed on this parts fiche - https://www.hondapartsnation.com/oempar ... riven-gear

And how hard a job is it?

I don't know if this matters but I recently refilled the final drive (on the center stand) with Valvoline 75W-90 synthetic.




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Rambozo
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Re: Final drive drip

Post by Rambozo »

Any chance you could have overfilled the drive?
As they age the same, if doing seals, I would do them all since you will have it apart.
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GD2
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Re: Final drive drip

Post by GD2 »

I think the only "overfill" it would have had is the difference between the angle of the bike when on the center stand and when not. And I do not see any weeping either from the fill plug or drain plug.
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MikeB
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Re: Final drive drip

Post by MikeB »

GD2 wrote: Mon Mar 25, 2024 3:10 pm I seem to have a drip coming from the square hole in the bottom of the final drive. I checked the shock to make sure that wasn't it, but it's filled with ATF and the leak isn't red.

I found a little info on this problem, but not sure which seal I would need to replace. There are three oil seals listed on this parts fiche - https://www.hondapartsnation.com/oempar ... riven-gear

And how hard a job is it?

I don't know if this matters but I recently refilled the final drive (on the center stand) with Valvoline 75W-90 synthetic.
From what I see in your picture, the evidence of the oil leak is more pronounced at the final drive to swing arm attachment point. I'd be more inclined to believe that the drive line Oil Seal (27X43X7), Part #91261-ME9-005 has failed and fluid is leaking out through at the drive shaft input to the final drive. That seal is what keeps the oil in at the final drive pinion joint. Have you removed the final drive and lubed the pinion joint and pinion lately? It should be done about every 16K miles or so and when it is done that seal should be replaced.


MikeB
1998 - GL1500 w/195,500 miles ~ 2017 - GL1800 w/32,000 miles
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GD2
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Motorcycle: 1995 GL1500 Aspencade - GD2
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2005 Yamaha V-Star 650 - Ruth

Re: Final drive drip

Post by GD2 »

I haven't removed the final drive. I recently bought the bike and replaced the fluid as part of bringing it back to life.

It appears the leak has slowed down a bit. I will check the fluid level.

Thank you
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paseandoconhonda
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Re: Final drive drip

Post by paseandoconhonda »

I had a similar problem, but when I took the rear part apart I could see that the oil was coming from the air shock, the seals were broken, the oil was leaking out and falling into the rear transmission. Check that this is not the cause of the problem.


At night and at 100 it is not noticeable.
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