X4 3000 mile sheave service (also applicable to the X2)
This is a discussion on X4 3000 mile sheave service (also applicable to the X2) within the X2/X4 CVT, Sheaves & Wet Clutch forums, part of the Yamaha Wolverine X2 & X4 847cc SxS category; Clean grease out of sheave and put Hunterworks greaseless HV weights in, do not reinstall grease cover....
Clean grease out of sheave and put Hunterworks greaseless HV weights in, do not reinstall grease cover.
Great info in all of your threads so far that I’ve read. Thanks for posting.
19’ Wolverine X2, White on Black (stickers went bye bye on day 1)
• 31” Skinny Laws on CanAm Renny XMR bead locks
• Super ATV 4” Portals
5K mile update. Between all the clutch testing I've lost track of exact mileage but it's been 500-1K miles since I last serviced my secondary. To refresh your memories, I had replaced the spring cup because it was heavily gouged. I didn't service it with normal grease but used TinkSeal (available from HunterWorks) this time. I realized when I got everything back together, minus spring, that when I moved the secondary sheave halves in\out that the outer seals were shot and allowing too much grease to get by them. Being this is my daily driver I decided to go with it for winter since I wouldn't be doing much high speed driving and would replace the seals when things warmed up.
In my previous Viking\Rhino one could get away with just re greasing and reusing the seals but with the additional loads\heat I now feel one should replace the seals on the X2/X4 secondary or at least have them on hand. The outer seals are part #93101-48004-00 and you'll need 2 at about 12 bucks each. You'll also need the O-rings, which are part #93210-50768-00, also 2 at 3 bucks each.
Usually when pulling my secondary out for service I'll find some grease has flung out onto the housing no matter how good I clean up excess grease after repacking. I was pleasantly surprised that even with bad seals there was minimum grease flung on the inside of my CVT housing
The reason for this I believe is because Tinkseal is very light weight, more the consistency of white lithium grease than wheel bearing grease. As a result it's more apt to stay where you put it. Another reason for changing the seals is that if you change greases, it's really hard to clean out the grease behind the outer seals as well as any dirt that gets in there as well.
I'm used to replacing larger automotive seals where a pick or screwdriver or self-screw can be used. I bought an actual seal puller this time and using a block of wood with it makes it much easier to remove the seal. Here the seal is already removed so you can get a better idea of how to use the seal puller
This shot shows the 2 O-ring seals removed and the top end seal removed
The other seal on the belt side of the secondary sheave removed
New seals installed and secondary packed with TinkSeal. I purposely put grease on the spring cup surface as there are no plans for slippery washers at this point for the X2/X4 that I know of. Make sure that before installing the O-rings you liberally coat the O-rings as well as pack their channels. For the end seals, you want to install them dry, otherwise they can come out if you lube the channels they're in. Use a large socket or piece of wood and gently tap them into place being careful not to install them cockeyed. If you do get them started cockeyed, don't try to tap the high side but start at the seated part and follow around the circumference of the seal tapping with your wood block. After they're installed make sure you pack grease inside their lips.
Even with my seals shot, Tinkseal kept the guide pins from gouging the spring cup. Unlike grease that lubricates surfaces, TinkSeal treats the metal so even if the liquid component dries out, you essentially have a dry-lubed part. The other benefit is that your seals get the benefit of that treatment and should last longer from friction wear.
2018 Blue Wolverine X4
First Wolverine X4 to break the 60 MPH barrier
Hunterworks prototype sheave with easy cleanout port, 22 gram HV weights
Weller Racing ECU flash
HMF Titan Series Quiet slip-on Exhaust
Swiss-cheesed airbox lid
STI HD beadlocks wearing Tusk Terrabite 27x9x12 tires
OEM windshield, soft cab, and roof
OEM skid plates
OEM rock sliders
OEM A-arm guards
OEM cargo box
Nice write up! Great info.
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