Oil tank draining into crank case during storage.

[bkm20x]

Like the title says my 2019 alpha is having trouble with the oil tank draining over periods of storage. Seems like the oil is in the crankcase causing a hydro lock condition currently. Last time it happened I was able to get the sled started (smoked and fat till it cleaned out)

Little more about the sled:
I have a MVM belt drive with plastic tank. Silber turbo with cycles and sleds clutching, boost T and BOV. runs very well except this issue. Just a little over 1000 miles.

No local cat dealer, few that I've talked with haven't given much direction

Is there a check valve assembly in the oil pump that could've failed causing this issue?
Seals in the water pump oil bath bad causing this?

Thanks in advance and feel free to correct any assumption I made right or wrong!

 

[boondocker97]

Haven't heard of this one before. My first guess would be something in the pump letting it bleed by too, but I really don't know.

 

[spoon]

I have seen a post or 2 on Facebook about this. Check the Ascender forum search.

 

[bkm20x]

I have seen a post or 2 on Facebook about this. Check the Ascender forum search.

I've also seen Facebook posts, participate in a few of them and catalyst groups also but can't get anything pinned down. The search brings up nothing...I've tried a few different wording version also

 

[triedit]

On the Suzuki 800 a bad oil pump would do that

 

[triedit]

Call MVM they can probably help

 

[High Voltage]

I had a 2014 Polaris do this. Bad check valves in the oil line was their issue.

 

[Tmod]

I agree with the check valves and when it happened to me on a different machine I just sucked out the oil that was in the crankcase and then fired it up and ran it for a bit to clean out.

 

[Sage Crusher]

Give Hubs Performance a call- Great guy (may seem pointed) but is straight up-and no BS.
He is out of Idaho and is a true Cat guy
Ask for Kevin he is the owner.
He and I bounce ideas off each other-and share information regarding Alpha's
Hubs Performance
29 W Oneida
Preston, ID 83263
ph: 208-852-0400
Hubsperformance@gmail.com

 

[bkm20x]

Give Hubs Performance a call- Great guy (may seem pointed) but is straight up-and no BS.
He is out of Idaho and is a true Cat guy
Ask for Kevin he is the owner.
He and I bounce ideas off each other-and share information regarding Alpha's
Hubs Performance
29 W Oneida
Preston, ID 83263
ph: 208-852-0400
Hubsperformance@gmail.com

Kevin is great! I've talked with him in the past on clutching, he shared a few comments and replied on Facebook to a similar problem. Sage Crusher seeing your knowledge on Cats and watching your videos I was hoping you would have the answer for me lol! I will try and get ahold of Kevin and pick his brain more.

Thanks!

 

[arcticridr]

Older cat 900 would do the same thing if the oil pump was going bad, had it happen to my 05 efi king cat, started using more oil gradually then after summer all the oil was in the crankcase no fun at all !!

 

[kanedog]

Is the clutch installed?

 

[bkm20x]

Is the clutch installed?

It is, motor has never been apart. I've taken off the pipe and y pipe to inspect pistons. Knock on wood my team clutch is original. Inspect every ride and clean as needed.

 

[kanedog]

I ask cuz i had my clutch off and tried to start it. I thought she was seized up but the engine needs the clutch installed for momentum to start it. I knew this but forgot. So I proceeded to pull the engine out. Haha. Hope you finger out the problem.

 

[IDspud]

Aka flywheel

 

[IDspud]

Done the same….mess your pants thinking you somehow seized er up.

 

[bkm20x]

Kevin from Hubs diagnosed over the phone with me a failed check valve in the oil pump allowing the intake to fill up and bleed down into the case. Getting oil out of the case is fun said no one ever....

 

[bkm20x]

Got all the oil out and new plugs in and she fired up...just a little oil to burn off hahaha

Thanks all for the feedback

 

[bnorth]

Kevin from Hubs diagnosed over the phone with me a failed check valve in the oil pump allowing the intake to fill up and bleed down into the case. Getting oil of the case is fun said no one ever....

Is there a replaceable check valve or do you have to swap the whole pump?

 

[bkm20x]

Is there a replaceable check valve or do you have to swap the whole pump?

Kevin told me he replaces them, I was also curious on if it is rebuildable and haven't gotten that answered yet. I haven't replaced the pump yet.