Polaris XC 700 Project Sled - Engine Disassembly

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Polaris XC 700 Project Sled - Engine Disassembly

Рет қаралды 14,075

Күн бұрын

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Today we do a full tear down of the Polaris Big Block Liberty 700 and discover had bad it is.

Пікірлер: 53

@snowking55 6 жыл бұрын

You look like you've done that before Streeter, nice teardown video. I like the reminder to bag and label all your parts, because I can't remember from one day to the next, so it helps tremendously in the reassembly.

@StreetersGarage 6 жыл бұрын

Thanks! Same hear. If I didn’t bag and tag. I would have no idea where everything went. Lol

@michaelcampbelljr6513 3 жыл бұрын

U made that look easy, lol great video, helps me a bunch, thankyou

@StreetersGarage 3 жыл бұрын

No problem. Glad you liked it

@robertausdemore7855 4 жыл бұрын

First off thank you for your videos they were very helpful. I was hoping you could answer a question for me. When putting the fly wheel back on is the nut that holds it on(spec is 90ft/lbs I believe) supposed to be flush with the shaft? I tried a few times and the nut sticks out just slightly. My concern is the water pump belt. When I rotate the engine the belt is slightly away from pump sprocket or whatever it’s called.

@StreetersGarage 4 жыл бұрын

The nut should be on the shaft with a couple of threads showing. I would check the flywheel and make sure it’s sliding over the key way on the end of the crank.

@robertausdemore7855 4 жыл бұрын

Streeters Garage thank you, I was thinking that might be the case.

@sleezymechanic 4 жыл бұрын

Do you have to replace the pin clips when you drive them out with the homemade socket thing or should they be okay? I like that idea. I have a few more questions about it though.

@StreetersGarage 4 жыл бұрын

Yes I did. They’re included with the pistons.

@anyandalldiy6704 2 жыл бұрын

Is a top end rebuild a feasible repair with the engine still in the chassis? Obviously it would be better to have it on a bench. But shouldnt be much different correct? Thanks.

@StreetersGarage 2 жыл бұрын

Absolutely. It’s just harder on your back. But absolutely can be done.

@anyandalldiy6704 2 жыл бұрын

@@StreetersGarage got lucky today, turned out to be something else. Lives to ride another day. Thanks for the vids.

@centralwashingtonmodernbus9456 3 жыл бұрын

Why not just use a small slide hammer with a sheet metal screw and "screw " it into the old seal and Use slide hammer to pull old seal out? then gently tap new seal in place? As a machinest and mill right for 45 years, I have done this method MANY MANY times.

@StreetersGarage 3 жыл бұрын

The engine was well past that. Cases needed to be split to address crank issues

@centralwashingtonmodernbus9456 3 жыл бұрын

@@StreetersGarage I have a 488 that will not idle below 4K. I pulled the boots and they are shot! Hope I don't have to pull primary and replace seal!

@StreetersGarage 3 жыл бұрын

Have you verified the slide height and that they’re in sync? I just posted a video that walks you through the entire process.

@lunartick8742 5 жыл бұрын

Was there just one retaining ring on the pto side of crankshaft?

@StreetersGarage 5 жыл бұрын

Nothing on the PTO. There's a large snap ring on the magneto side. There's a alignment ring on the crankshaft that matches up to a groove in the case halves. Thanks for watching!

@scottmacziewski7967 2 жыл бұрын

How did you get the brace with the 2 allen heads off by the clutch holding the case together ?

@StreetersGarage 2 жыл бұрын

3/8 drive Allen head sockets and a impact.

@timothyleeuw5895 5 жыл бұрын

If buying another crank what ru doing with the existing one?

@StreetersGarage 5 жыл бұрын

The place that I bought the replacement took the old crank in as a core so it could be rebuilt.

@Hunt255 5 жыл бұрын

Did you replace the seal in the strator housing? If you did how did you press a new on in? Also I noticed the water pump shaft is wallowed out like the one in my sled, did you replace that .

@StreetersGarage 5 жыл бұрын

I tapped it out with a hammer and reinstalled with a seal driver.

@MrNcotton 3 жыл бұрын

How much crank end play is acceptable?

@StreetersGarage 3 жыл бұрын

There's no official spec from Polaris in the service manual. However, typically runout (rotational) should be than .005 and end play less than .003

@MrNcotton 3 жыл бұрын

@@StreetersGarage good to know, I’ve got probably .100 end play on my 98 700 but it runs great and the bearings are not noisy. Thoughts on that?

@StreetersGarage 3 жыл бұрын

.100 or .010? Because .100 is almost a 1/8th of a inch (.125)

@MrNcotton 3 жыл бұрын

@@StreetersGarage yes .100”

@StreetersGarage 3 жыл бұрын

Something is definitely wrong. Best guess is that the locating rings on the crank that mate with the case halves are broken.

@adampick8179 5 жыл бұрын

If just doing pto seal can I leave top end in place?

@StreetersGarage 5 жыл бұрын

No - the cases need to be split and to split you need to remove the top end.

@Wanous-hv7zo 5 жыл бұрын

What’s wrong with it?

@StreetersGarage 5 жыл бұрын

Blown cylinder , piston, crank. Check out the playlist, it show everything wrong with it and the rebuild.

@devinf6381 4 жыл бұрын

How many miles are on this motor?

@StreetersGarage 4 жыл бұрын

10k

@randytravis5263 5 жыл бұрын

Hey dude u cut the video when u pulled out the Crank was it hard to split the case?

@StreetersGarage 5 жыл бұрын

No. Once you remove the case bolts it comes apart very easily.

@randytravis5263 5 жыл бұрын

Streeters Garage Awesome thanks man. I was wondering if I could change the Crank seal's with out splitting the case. If I take the clutch off can I just remove the old seal and install the new one

@StreetersGarage 5 жыл бұрын

With the Liberty motors you can’t. You need to split the cases unfortunately.

@randytravis5263 5 жыл бұрын

Streeters Garage Nice so thankful u answered right back. My motor is a 1998 xc 700

@StreetersGarage 5 жыл бұрын

No problem. It's not that bad of a job to do to take it down. Just stay organized and bag/tag all of your parts and fasteners. This will save so much time when you back to put it all back together. Also reference the service manual during re-assembly for sequence and torque specs.