[BadM0nkey]

My 2014 has both leaking final drive (rear diff) seals and some other newer oil leak under the engine. I am planning to start tear-down to identify the new leak and begin the process of replacing the final drive seals. I will use this thread to document the process with pictures and instructions.

What fun.

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[Sport4x4]

You Dah Man…(or monkey)

 

[cactus]

Ok so the diff seals obviously didn't take up with the additive (you did try that?). What's the other newer oil leak do you think, front seal?

 

[BadM0nkey]

IDK Cactus. The skid plate under the engine is leaking from the whole area. Could be front or rear seals. Could even be that after a few months the gasket I replaced (so carefully) when I did the new slugged wet clutch is leaking. I would almost prefer that over the front seal. I won't know till I put it up and take off some of the plastics from the driver's side.

 

[BadM0nkey]

Remove your rear skid plate.

While the vehicle is level drain the final drive by removing the drain bolt and washer with a 14mm socket. If it is cold this will take a long time.

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[BadM0nkey]

To inspect the engine I removed the Driver side rear and side panels. There are 3 10mm bolts and 8 plastic push pins.

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[BadM0nkey]

Chocked the front wheels, put it up on jackstands and removed the rear tires.

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[MNDirtRider]

I wish I was there to help you work on it. Lots more fun tearing into someone else's stuff and spending THEIR $$$

 

[BadM0nkey]

I would welcome help. Especially to find the oil leak.

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[trailcutter]

this is one of the draw backs of yamaha welding their skid plates,not one of their better ideas.i took the middle floor panel out of mine and helped to see front seal.

 

[BadM0nkey]

Couldn't find a leak so I changed the oil and will monitor it.

For rear diff. Remove the caliper. 2 x 12mm Bolts.

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[BadM0nkey]

To remove the wheel axle nuts use a 32mm or 1.25" impact. Regular thread so turn counter clockwise.

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[BadM0nkey]

Remove upper and lower a-arm bolts. Bolt is 17mm and nut 19mm.

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[BadM0nkey]

Put the nut back on flush and tap the wheel assembly off with a deadblow hammer. Make sure to hold the wheel assembly.

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[BadM0nkey]

Easier than expected.

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[BadM0nkey]

Bungie up the a-arm for more room. Grab the axle near the diff and yank it out.

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[BadM0nkey]

Remove the parking brake caliper. 2 x 14mm bolts.

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[BadM0nkey]

Remove the rear diff bolt and bracket. Remove the two longer bolts. Remove the long bracket. 17mm for diff bolts. 12mm for brackets. Oh and don't forget the breather hose.

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[BadM0nkey]

Pull the rear diff out and drop it through the frame.

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[BadM0nkey]

Loosen the rubber boot and pull the shaft out of the diff. Remember the end with the spring goes in the engine.

Done for the day. Wish I had a lift!

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