Diff Leak - Motorcycle-Journal Forums

Toolboy · 05-10-2006, 04:53 AM

Gday all,

First problem with my M50, the rear diff is leaking. Pretty bad too, oil on the rear tyre will not be fun,,, I showed my dealer and they contacted Suzuki who wanted to know if the diff was overfilled at first service but it was all done correctly. The bike has 2000km on it, so its a new seal being fitted on Monday under warrenty. I have not seen a thread on this subject so maybe i am the first???? Ohh well **** happens

Toolboy

aussierider · 05-10-2006, 06:00 PM

Gulp! I hope this doesn't turn up as a commom problem. To the best of my knowledge the rear drive is an older design from Volusia days (correct me if I'm wrong) so it has been tried and tested for a while. Keep us informed. Maybe some of that NT sand & dust got in to it. (LOL)

hammersfan · 05-10-2006, 09:37 PM

I don't know how you could over fill the differential. I was told to fill it up till it comes to the top of the filler hole, you can't get any fuller than that !

jkulysses · 05-11-2006, 07:46 PM

Quote:

Originally Posted by hammersfan

I don't know how you could over fill the differential. I was told to fill it up till it comes to the top of the filler hole, you can't get any fuller than that !

+1

Toolboy · 05-11-2006, 11:10 PM

Well that is first thing that Suzuki asks, the drip has become a steady flow now so the bike is in the shed till Monday.

I eat enough of the NT sand an dust when racing motocross up here Aussierider so it would sure wear out a seal,,,lol..

Toolboy

**Clint** · 05-12-2006, 01:13 PM

Unless your bike has two rear wheels, it's not a differential. Just an FYI.

hammersfan · 05-12-2006, 03:25 PM

Quote:

Originally Posted by RowdyRed94

Unless your bike has two rear wheels, it's not a differential. Just an FYI.

After I put in my 2 cents worth I started thinking, is differential and drive shaft the same thing ? Because I was talking about filling the drive shaft with gear oil.

**Clint** · 05-12-2006, 10:09 PM

A differential is a set of gears that accomodate two wheels on a single axle. A drive shaft is just that, a shaft. I'm not sure what you call the housing that your driveshaft resides in and contains the oil. Anyone?

dragbar · 05-13-2006, 06:37 AM

Suzuki simply calls it the Final Gear Case

Toolboy · 05-23-2006, 12:01 AM

Gday all,

The end result was that the Final Drive "Breather" was blocked by silastic. In the workshop manual on assembly of the Final drive a sealant is used but warns not to block the breather hole. The seal was replaced as well. Interesting

Toolboy

**Clint** · 05-23-2006, 08:49 AM

Thanks for the update.

Mavman · 05-23-2006, 01:43 PM

Quote:

Originally Posted by RowdyRed94

Thanks for the update.

yes, interesting to say the least....thanks for the fix info/update, be good to know if it's happens to someone else on this board and have an idea where to point the service dept to look.

jpwM50 · 05-23-2006, 04:12 PM

What is Silastic????
Description ::
Silastic 733 is a high performance, one-part silicone sealant that offers excellent adhesion (usually without a primer), elasticity, wide temperature resistant and long life reliability.

aussierider · 05-23-2006, 07:21 PM

Toolboy, thanks for this info. Where exactly is the final drive breather hole? Can it be checked for blockage without getting your hands dirty? Interesting that the USA m50s don't have that O2 sensor attached to the top OEM silencer. I wonder why!

Toolboy · 05-23-2006, 08:23 PM

The breather looks like a bolt hole on the final drive case, i havent seen it on the bike but the mechanic showed in the workshop manual and under the picture is the warning about not blocking the breather with sealant.

When I purchased Jardine pipes and went to fit them i realised that there was no O2 sensor hole, Australian emission controls differ from the USA. I wanted to keep the sensor after discussion with the dealer and raised the question about this issue on this forum and some fact finding about O2 sensor on the web. I had also fitted a Thunder MFg Air cleaner and Techlusion FI module so i had the sensor fitted to the system, but because there is no cross over the sensor reads only 1 pipe. It was that or leave the sensor disconnected. The M50 runs great with a little fine tunning on the Techlusion unit.

Toolboy

aussierider · 05-23-2006, 09:57 PM

My guess is that our bikes have to conform to the euro emission standards, so we have a O2 sensor fitted to the exhausts to monitor carbon monoxide levels. The alternative might have to be a catalytic converter, which all current BMWs Ducatis, Guzzis etc have fitted as standard. The US models obviously have a different requirement. Glad you raised this, I assumed that all after-market pipes would have the sensor adapter fitted for M50 options. I wondered why it had never come up in their posts. Now we know.

bostonjim · 05-24-2006, 04:59 AM

I have an 06 S83 that is leaking. Oil on the wall of the tire. Brought it back and all they did was tighten the drain plug. It has to go back. I will print this out and hand it to the service techs. If the breather is clogged, is the leak coming from around the seals, and if so, should they be replaced? Thanks for any help in advance.

Jim

Danr · 05-25-2006, 04:19 AM

Quote:

Originally Posted by bostonjim

I have an 06 S83 that is leaking. Oil on the wall of the tire. Brought it back and all they did was tighten the drain plug. It has to go back. I will print this out and hand it to the service techs. If the breather is clogged, is the leak coming from around the seals, and if so, should they be replaced? Thanks for any help in advance.

Jim

It's leaking because if the breather hole is blocked and the pressure build up blows out the seal. If your breather hole is blocked then your seal has been damaged and should be replaced.

m50dude · 10-17-2008, 06:51 PM

I just noticed my gear oil is leaking too. I checked the bolts and all are tight.
Just another note: My original gear oil was a light brown color. I replaced it with the oil that was recommended by the dealer and it was red. It has been about 1500 miles and the oil has turned brown again. WTF. Is this normal.
Does anyone know what the Stealer would charge to fix this?

ozoner · 10-17-2008, 07:04 PM

That's your crankcase oil. Totally normal for it to change color. The dealer will charge you whatever a normal oil change costs to "fix" it, but the pretty red color will only last 500-600 miles

05-10-2006, 04:53 AM	#1 (permalink)
Toolboy Ditch Magnet Joined: Sep 2005 Bike: Black 06 M50, RM250 07, RM125 05, RM400 79 Location: Alice Springs, Australia Posts: 182	Diff Leak Gday all, First problem with my M50, the rear diff is leaking. Pretty bad too, oil on the rear tyre will not be fun,,, I showed my dealer and they contacted Suzuki who wanted to know if the diff was overfilled at first service but it was all done correctly. The bike has 2000km on it, so its a new seal being fitted on Monday under warrenty. I have not seen a thread on this subject so maybe i am the first???? Ohh well **** happens Toolboy

05-10-2006, 09:37 PM	#3 (permalink)
hammersfan U.B's LoveChild Joined: Jan 2006 Bike: 2008 C90 SE Location: Ajax ,Ontario ,Canada Posts: 1,233	I don't know how you could over fill the differential. I was told to fill it up till it comes to the top of the filler hole, you can't get any fuller than that ! __________________ Ride Safe Hammersfan

05-13-2006, 06:37 AM	#9 (permalink)
dragbar Fifth gear streak Joined: May 2005 Bike: M50 Location: SE Missouri Posts: 1,375	Suzuki simply calls it the Final Gear Case __________________ I ate Chinese last night..........should of seen her struggle when i put her in the van. Доверя́й, но проверя́й.

05-23-2006, 04:12 PM	#13 (permalink)
jpwM50 Clutch Cadet Joined: Jul 2005 Bike: Blue M50 Location: Waterloo, Canada Posts: 944	What is Silastic???? Description :: Silastic 733 is a high performance, one-part silicone sealant that offers excellent adhesion (usually without a primer), elasticity, wide temperature resistant and long life reliability. __________________

05-24-2006, 04:59 AM	#17 (permalink)
bostonjim In Training Joined: May 2006 Bike: Suzuki S83 Location: just south of boston ma. Posts: 148	I have an 06 S83 that is leaking. Oil on the wall of the tire. Brought it back and all they did was tighten the drain plug. It has to go back. I will print this out and hand it to the service techs. If the breather is clogged, is the leak coming from around the seals, and if so, should they be replaced? Thanks for any help in advance. Jim __________________ Some days it's not worth chewing through the restraints!!!

05-10-2006, 06:00 PM	#2 (permalink)
aussierider Ditch Magnet Joined: May 2006 Bike: Suzuki Boulevard C50 Location: Australia. Posts: 152	Gulp! I hope this doesn't turn up as a commom problem. To the best of my knowledge the rear drive is an older design from Volusia days (correct me if I'm wrong) so it has been tried and tested for a while. Keep us informed. Maybe some of that NT sand & dust got in to it. (LOL)

05-11-2006, 11:10 PM	#5 (permalink)
Toolboy Ditch Magnet Joined: Sep 2005 Bike: Black 06 M50, RM250 07, RM125 05, RM400 79 Location: Alice Springs, Australia Posts: 182	Well that is first thing that Suzuki asks, the drip has become a steady flow now so the bike is in the shed till Monday. I eat enough of the NT sand an dust when racing motocross up here Aussierider so it would sure wear out a seal,,,lol.. Toolboy

05-23-2006, 12:01 AM	#10 (permalink)
Toolboy Ditch Magnet Joined: Sep 2005 Bike: Black 06 M50, RM250 07, RM125 05, RM400 79 Location: Alice Springs, Australia Posts: 182	Gday all, The end result was that the Final Drive "Breather" was blocked by silastic. In the workshop manual on assembly of the Final drive a sealant is used but warns not to block the breather hole. The seal was replaced as well. Interesting Toolboy

05-23-2006, 07:21 PM	#14 (permalink)
aussierider Ditch Magnet Joined: May 2006 Bike: Suzuki Boulevard C50 Location: Australia. Posts: 152	Toolboy, thanks for this info. Where exactly is the final drive breather hole? Can it be checked for blockage without getting your hands dirty? Interesting that the USA m50s don't have that O2 sensor attached to the top OEM silencer. I wonder why!

05-23-2006, 08:23 PM	#15 (permalink)
Toolboy Ditch Magnet Joined: Sep 2005 Bike: Black 06 M50, RM250 07, RM125 05, RM400 79 Location: Alice Springs, Australia Posts: 182	The breather looks like a bolt hole on the final drive case, i havent seen it on the bike but the mechanic showed in the workshop manual and under the picture is the warning about not blocking the breather with sealant. When I purchased Jardine pipes and went to fit them i realised that there was no O2 sensor hole, Australian emission controls differ from the USA. I wanted to keep the sensor after discussion with the dealer and raised the question about this issue on this forum and some fact finding about O2 sensor on the web. I had also fitted a Thunder MFg Air cleaner and Techlusion FI module so i had the sensor fitted to the system, but because there is no cross over the sensor reads only 1 pipe. It was that or leave the sensor disconnected. The M50 runs great with a little fine tunning on the Techlusion unit. Toolboy

05-23-2006, 09:57 PM	#16 (permalink)
aussierider Ditch Magnet Joined: May 2006 Bike: Suzuki Boulevard C50 Location: Australia. Posts: 152	My guess is that our bikes have to conform to the euro emission standards, so we have a O2 sensor fitted to the exhausts to monitor carbon monoxide levels. The alternative might have to be a catalytic converter, which all current BMWs Ducatis, Guzzis etc have fitted as standard. The US models obviously have a different requirement. Glad you raised this, I assumed that all after-market pipes would have the sensor adapter fitted for M50 options. I wondered why it had never come up in their posts. Now we know.

10-17-2008, 06:51 PM	#19 (permalink)
m50dude Newbie Joined: Jan 2008 Bike: 2007 Suzuki M50 Location: austin, tx Posts: 15	My Final gear oil is leaking too! I just noticed my gear oil is leaking too. I checked the bolts and all are tight. Just another note: My original gear oil was a light brown color. I replaced it with the oil that was recommended by the dealer and it was red. It has been about 1500 miles and the oil has turned brown again. WTF. Is this normal. Does anyone know what the Stealer would charge to fix this?

10-17-2008, 07:04 PM	#20 (permalink)
ozoner In Training Joined: Jun 2008 Bike: 2008 M50 Ltd Black/Silver Location: Mountlake Terrace, WA Posts: 100	That's your crankcase oil. Totally normal for it to change color. The dealer will charge you whatever a normal oil change costs to "fix" it, but the pretty red color will only last 500-600 miles

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