Help with my front sprocket/oil seal

Firefighter18256 · 06-18-2015, 02:42 PM

Was out riding it one day and got a heavy oil leak when i got back home with it and found out the oil was leaking from behind the front sprocket. So i taken the sprocket off and found out the seal was shot. i got a new seal but i think there is a peace missing could any one tell me if there is any thing els that goes behind the front sprocket other then the seal?

I got this atv used so i have no clue what it is or any thing. I think its a sunl sla 110.

Mudflap · 06-18-2015, 02:58 PM

Only the seal goes behind the sprocket.

Firefighter18256 · 06-18-2015, 03:01 PM

This is what i taken off it

Heres my new one

Is it suppose to have a tight fit like seal the hole or is there suppose to be a gap?

Mudflap · 06-18-2015, 03:42 PM

It's supposed to be a snug fit. A tiny spring holds it snug around the countershaft.

Firefighter18256 · 06-18-2015, 03:58 PM

ok thank you, i have a gap still but i put gasket seal around it the blue stuff hope that works

Mudflap · 06-18-2015, 04:56 PM

Is the gap around the outside? If so, I doubt gasket sealer will hold it. Should be a standard size, probably the same as the old Honda C100 cub.

Weldangrind · 06-19-2015, 12:36 AM

It should also be the same size as a current Honda XR50 or CRF50. There should not be a gap.

Firefighter18256 · 06-19-2015, 12:16 PM

This is what i got http://www.amazon.com/Engine-Seal-Se.../dp/B00OIIS3Q8
and it still has the gap. The numbers even match up with the old one. I have a feeling some thing made the hole bigger because looks like some thing dug into the casing

Weldangrind · 06-19-2015, 12:19 PM

What are the numbers on the seal?

Firefighter18256 · 06-19-2015, 12:26 PM

Tc
17
29
6
29c

Weldangrind · 06-20-2015, 12:03 PM

In case you're unfamiliar with that numbering system, it means 29mm OD, 17mm ID and 6mm width. Do you have calipers that you can use to measure the hole? Perhaps it is more than 29mm wide, and that was the wrong seal size from the beginning.

06-18-2015, 02:42 PM	#1
Firefighter18256 Join Date: Jun 2015 Posts: 8	Help with my front sprocket/oil seal Was out riding it one day and got a heavy oil leak when i got back home with it and found out the oil was leaking from behind the front sprocket. So i taken the sprocket off and found out the seal was shot. i got a new seal but i think there is a peace missing could any one tell me if there is any thing els that goes behind the front sprocket other then the seal? I got this atv used so i have no clue what it is or any thing. I think its a sunl sla 110.
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06-19-2015, 12:36 AM	#7
Weldangrind Join Date: Mar 2009 Location: Sardis, BC, Canada Posts: 25,977	It should also be the same size as a current Honda XR50 or CRF50. There should not be a gap. __________________ Weldangrind "I figure I'm well-prepared for coping with a bike that comes from the factory with unresolved issues and that rewards the self-reliant owner." - Buccaneer
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06-19-2015, 12:19 PM	#9
Weldangrind Join Date: Mar 2009 Location: Sardis, BC, Canada Posts: 25,977	What are the numbers on the seal? __________________ Weldangrind "I figure I'm well-prepared for coping with a bike that comes from the factory with unresolved issues and that rewards the self-reliant owner." - Buccaneer
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06-20-2015, 12:03 PM	#11
Weldangrind Join Date: Mar 2009 Location: Sardis, BC, Canada Posts: 25,977	In case you're unfamiliar with that numbering system, it means 29mm OD, 17mm ID and 6mm width. Do you have calipers that you can use to measure the hole? Perhaps it is more than 29mm wide, and that was the wrong seal size from the beginning. __________________ Weldangrind "I figure I'm well-prepared for coping with a bike that comes from the factory with unresolved issues and that rewards the self-reliant owner." - Buccaneer
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06-18-2015, 02:58 PM	#2
Mudflap Join Date: Sep 2014 Posts: 1,870	Only the seal goes behind the sprocket.
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06-18-2015, 03:01 PM	#3
Firefighter18256 Join Date: Jun 2015 Posts: 8	This is what i taken off it Heres my new one Is it suppose to have a tight fit like seal the hole or is there suppose to be a gap?
	0

06-18-2015, 03:42 PM	#4
Mudflap Join Date: Sep 2014 Posts: 1,870	It's supposed to be a snug fit. A tiny spring holds it snug around the countershaft.
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06-18-2015, 03:58 PM	#5
Firefighter18256 Join Date: Jun 2015 Posts: 8	ok thank you, i have a gap still but i put gasket seal around it the blue stuff hope that works
	0

06-18-2015, 04:56 PM	#6
Mudflap Join Date: Sep 2014 Posts: 1,870	Is the gap around the outside? If so, I doubt gasket sealer will hold it. Should be a standard size, probably the same as the old Honda C100 cub.
	0

06-19-2015, 12:16 PM	#8
Firefighter18256 Join Date: Jun 2015 Posts: 8	This is what i got http://www.amazon.com/Engine-Seal-Se.../dp/B00OIIS3Q8 and it still has the gap. The numbers even match up with the old one. I have a feeling some thing made the hole bigger because looks like some thing dug into the casing
	0

06-19-2015, 12:26 PM	#10
Firefighter18256 Join Date: Jun 2015 Posts: 8	Tc 17 29 6 29c
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