Grant Describes A Front Diff

Awesome demonstration Grant! Thanks for sharing this information. You have a real gift for teaching!

Thank you for this video, I've been looking for detailed explanation of Interaxle dif and couldn't find one until this. Very informative.

Great video! I feel smarter now. Even though I didn't know much about differentials, your demonstration made it much easier to understand

This is a good, actually a great view of how the front drive axle of a tandem axle semi works. I've never actually seen the guts before. Thanks for displaying this. Maybe a little oil would help, kinda squeaky lol.

Excellent demonstration!

"Jaw clutch" is correct for the interaxle differential lock, but I had never heard that term before; these are usually called dog clutches in automotive transmission systems.

Great video. very nice cut away diff too. well explained.

excellent!!!!

Thank you , very well explained 👌👍👍

Mr.grant how can I tell if the thru shaft is broke . Both rear axles are good

Great information thank you

Very cool video

Some of the older models came optional with a lube pump. I’ve seen a DS461 without a lube pump and the parts call out shows it is optional.

Thanks you sir

Great video Grant!!! Robert Goodin @DTNA

Any videos on the pump ?

My truck has problem when I turn differential switch on I hear air does something but only one rear wheel spinning on passenger side. What can be the problem? What's need be checked or replaced??

Very helpful

Thanks

If we removed the drive shaft between two differential truck still able to move ?

PLEASE HELP Can someone please explain to me how locking the input shaft and helical drive gear of the front carrier assembly together prevents the inter axle differential pinions from spinning? I can see that when Grant engages the dog teeth and locks the input shaft to the helical drive gear that the differential pinions indeed do not spin...I understand that preventing differential pinions from spinning would cancel out any inter axle differential action and that the whole assembly would then rotate at the same speed but what I am failing to understand is how locking the input shaft and helical drive gear together accomplishes this... So how does locking the helical drive gear to the input shaft stop the spinning of these inter axle differential pinions? Any help is appreciated, I'm stumped and not sure I can figure this out alone.

power divider, or inter axle differential.

Well done very educational

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Good attempt, but the hardware is so difficult to turn that it can't be properly demonstrated except when locked, so it's just confusing.

For someone with general automotive knowledge, it's strange to call this a " *front* " axle. It is, of course, an axle in the _rear_ axle group, and specifically the leading axle in that group. Axle manufacturers use "front" axle to refer to the steer axle at the front of the vehicle. In their terms, this is forward of the two axles in a tandem rear axle set.

Thank you I was worried my short shift was out of phase. So when I stop I look and it was in phase then the next day I looked and it was off again… so I knew it could slip … limited slip

Trying to find the answer to a question maybe you can help me, on a front wheel drive car just front wheel drive what fluid is in the transaxel differential case? i have a 2008 Chrysler Sebring that looks like its leaking transmission fluid from around the transaxel differential pan thats above the transmission pan itself , ive searched online and cant find answer.

I don't know what the hell country your from but that's called a pinion and a ring gear that's not a crown it's called ring and pinion