P500 2015 hp500 rear diferential running hot

H

hponda

New Member
Sep 15, 2015
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I have a 2015 HP 500 with 1200 miles. I noticed a high pitch sound coming from the rear differential after a pretty good ride. It felt real hot and so did the axles. I checked the oil and it was fine.
Is this normal.
 
trigger

trigger

Old Ironsides
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Mine feel real hot after a ride too. Don't know exactly what high pitch you're referring to. If you've never changed the differential fluid it might be due. I went with synthetic in mine.
 
William

William

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Mine makes a low hum, high pitch whine, clack, rattle and a dooga dooga noise. When I let off the gas they all stop, so that means gear noise not bearing noise. My bearings are spotless... I inspected them. Just loud straight cut gears... if someone rides with me that never has before I always have to say "it's normal" bc they look at me crazy when the noises kick in at about 20mph... lol
 
William

William

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And yes mine gets hot too. The exhaust being right above it doesn't help...
 
Buford

Buford

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It may run a little cooler if you put synthetic in it.
 
O

oldfortyfive

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If you're going to change out the dif fluid this will make it much easier. I drilled out an extra filler cap to fit some tubing I had around. The gears almost block the fill hole making it hard to put a tube in. this way you can pour in the correct amount, wait for it to settle in and then remove with minimal spilling.

Dif filler
 

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