[z1classic]

New to Polaris and the 'on demand' 4wd setup. Just bought a 1999 Magnum 500 and spent the day finding what is wrong with it. One issue is a weird one that I am hoping someone can help with.

I was testing it in the snow. 4wd works great, but when I have the 'on demand 4wd' switch in the 'off' setting, the front right hub acts up. I can spin the rear wheels as expected but the front right hub will engage as engine speed increases (even though the 4wd is OFF). As you can imagine, it tugs HARD when this happens. Once I let up it disengages. It is repeatable and it is only the right front hub.

Thanks in advance for any help.

 

[keweenaw570]

New to Polaris and the 'on demand' 4wd setup. Just bought a 1999 Magnum 500 and spent the day finding what is wrong with it. One issue is a weird one that I am hoping someone can help with.

I was testing it in the snow. 4wd works great, but when I have the 'on demand 4wd' switch in the 'off' setting, the front right hub acts up. I can spin the rear wheels as expected but the front right hub will engage as engine speed increases (even though the 4wd is OFF). As you can imagine, it tugs HARD when this happens. Once I let up it disengages. It is repeatable and it is only the right front hub.

Thanks in advance for any help.

Try replacing your diff lube with the polaris standard. somewhere i read the part of the mechanism for the AWD is in there that senses slip. if that doesnt work... get a awd slip sensor?

 

[Clinebo]

The front hubs can get sticky if the fluid is dirty. I'd try changing the fluid and see if that doesn't fix the problem. The front hubs and differential take 2 different fluids. You can look all the info up here....

http://www.polarisatvforums.com/forums/atv-general-discussion/6746-lube-chart-all-polaris-atvs.html

The hubs don't take much and so a quart lasts for several changes.

 

[keweenaw570]

The front hubs can get sticky if the fluid is dirty. I'd try changing the fluid and see if that doesn't fix the problem. The front hubs and differential take 2 different fluids. You can look all the info up here....

http://www.polarisatvforums.com/forums/atv-general-discussion/6746-lube-chart-all-polaris-atvs.html

The hubs don't take much and so a quart lasts for several changes.

Thanks for the clarification

 

[hyfee66elco]

Mine did the exact same thing when I bought it. Fresh hub fluid made it disappear. I used AMSOIL ATF.

Actually, since then I made sure every fill hole on my machine has Amsoil in it!

AMSOIL Shop by Product

 

[z1classic]

Thank you everyone for the replies. I will be changing all the fluids once it warms up around here and will update the thread with the result. Sounds like that will take care of it - thankfully.