JD
Pro
- Joined
- Apr 14, 2003
- Messages
- 192
- Location
- Manitoba, Canada
- Country
- Canada
- Snowmobile
- 2016 Venture TF-LE
2003 RX-1 ER
Ok……Took my chain case, all bearings and both jack and drive shafts apart to change out bearings and seals….
My dilemma ….the bottom bearing on the inside half of the chain case has a seal on one side…it’s on the side that the chain oil will be on….The outside (tunnel) has only the separate oil seal…This is the way mine was from factory…Is this correct….It seems to make more sense to have the bearings open side on the inside of the chain case, wouldn’t it!!! Is there any chance that this bearing with the single seal on one side belongs on the top of the outside cover to help protect oil from getting near the brake…..? I am feeling really uneasy putting it back this way…What do you guys think….Is this right or wrong….
On a side note: 6040 miles all bearing including the one I have a hunch was installed incorrectly were all in excellent condition, with the exception of the left side (clutch) axle bearing. This bearing was totally rusted and had no grease just some gooey crud in it….Good thing I pulled it apart to check…..
Anyways if someone has done there bearing maybe you can give me some insight as to which way that bottom chain case bearing goes it….sure is driving me up the wall!!!
Ok……Took my chain case, all bearings and both jack and drive shafts apart to change out bearings and seals….
My dilemma ….the bottom bearing on the inside half of the chain case has a seal on one side…it’s on the side that the chain oil will be on….The outside (tunnel) has only the separate oil seal…This is the way mine was from factory…Is this correct….It seems to make more sense to have the bearings open side on the inside of the chain case, wouldn’t it!!! Is there any chance that this bearing with the single seal on one side belongs on the top of the outside cover to help protect oil from getting near the brake…..? I am feeling really uneasy putting it back this way…What do you guys think….Is this right or wrong….
On a side note: 6040 miles all bearing including the one I have a hunch was installed incorrectly were all in excellent condition, with the exception of the left side (clutch) axle bearing. This bearing was totally rusted and had no grease just some gooey crud in it….Good thing I pulled it apart to check…..
Anyways if someone has done there bearing maybe you can give me some insight as to which way that bottom chain case bearing goes it….sure is driving me up the wall!!!
JD,
That bearing is in there right, they all came like that. I think the
reason Yamaha done this from what i've heard was to keep any
shavings from the gear box out of the bearing. I don't know
why? my Vmax4 has a open bearing and so did my Exciter,Phazar
VK etc.
TB
That bearing is in there right, they all came like that. I think the
reason Yamaha done this from what i've heard was to keep any
shavings from the gear box out of the bearing. I don't know
why? my Vmax4 has a open bearing and so did my Exciter,Phazar
VK etc.
TB
JD
Pro
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- Manitoba, Canada
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- Canada
- Snowmobile
- 2016 Venture TF-LE
True Blue...Do you see any harm in turning that bearing around so the exposed side is to the chain case??? Also a good bud of mine suggested that the bearing on the case at the top should have that extra protection of the bearing seal to ensure the brake never gets oiled....What do you think....??Thanks..JD
LazyBastard
TY 4 Stroke God
Those kind of seals will not stop oil from flowing through. Only the really good seals on the case will actually stop oil. With the driveshaft bearing sealed from the oil, it will still fill up with oil for lube. The big seals actually REQUIRE oil - they would otherwise burn out real fast.
nhrxrider
TY 4 Stroke Junkie
O.K., if that seal allows oil through, then why doesn't the oil leak out of the chaincase? I had mine apart, but I can't remember if there was another seal in there to seal the oil.
Jim
Jim
RX-1 Liter
Expert
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- Chautauqua County, NY
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- USA
- Snowmobile
- 2017 RMK 155"
- LOCATION
- Chautauqua County, NY
Good maintenance to do since yesterday ( Sunday) one of my chaincase bearings shattered and seized. I haven't tore the chaincase apart yet so I don't know the extent of the damage. BTW this was the 03 with 6000 miles.
Roadrunner
Expert
Yes, there is a second seal located on the inside chaincase housing.nhrxrider said:
JD
Pro
- Joined
- Apr 14, 2003
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- Location
- Manitoba, Canada
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- Canada
- Snowmobile
- 2016 Venture TF-LE
LazyBastard
TY 4 Stroke God
nhrxrider said:
The BEARING seal lets oil through, the CASE seal does NOT.
nhrxrider
TY 4 Stroke Junkie
Yea, LB...thats what I meant...I couldn't remember if there was another seal besides the one thats part of the bearing. I was inside there while replacing my bearings (had 3 bad ones) when I changed my rear skid and track, but I couldn't remember if there was a specific oil seal or not.
Jim
Jim
whits-end
Pro
The mechanical seal in the case is doing the sealing. The bearing seal on 1 side is optional, if you're worried about filings. Prolly more important when it's new. I reassembled mine with with all bearing seals removed, like every other sled i've ever owned.
nhrxrider
TY 4 Stroke Junkie
Thats how I would do it. In every transmission, transfer case (very similar to a chaincase), and sled chaincase, all the bearings were open to the oil. The filings should be sitting at the very bottom of the chaincase and shouldn't be an issue at all, especially if the fluid is changed each season.
Jim
Jim
