Truck thumping noise diagnosis

[buffalobo]

^^^This.

I would do the carrier/center bearing myself, it needs done regardless, especially if going to be plow truck.

If issue continues then get second opinion.

[Irving]

The diff shouldn't thump. If it's getting old, it would need a fluid change and maybe the clutches are wearing. Even if the clutches are worn, it'll just act like an open diff.

[Hummer]

I'm inclined to trust the Toyota mechanic who has 26 years of experience. At any rate I've committed so we'll see how it works when it's done.

Seems to me the carrier bearing was replaced before but I don't have the records with me to search.

[ChickNorris]

My first thought because I'm a prankster, was zip ties. Sorry it wasn't that though.

[Ah Pook]

Talk to Noah, at Peak to Peak Imports, in Ned. He’s good.

[Hummer]

Talk to Noah, at Peak to Peak Imports, in Ned. He’s good.

Thanks for the tip, I'll keep it in mind, particularly when my '85 toy plow truck needs help. I try not to take it to the flatlands and mostly only go to Ned for gas.

[Hummer]

Partly because the truck wears studded tires year round.

[Hummer]

The diff shouldn't thump. If it's getting old, it would need a fluid change and maybe the clutches are wearing. Even if the clutches are worn, it'll just act like an open diff.

Thanks for your comments. I've never had a differential problem in a vehicle. U-joints, carrier bearings, clutches but never killed a transmission or differential. I've raced cars, rebuilt engines and done a wide variety of mechanical work from motorcycles to heavy equipment but now I'm at the station in life that I can let specialists do the high tech or heavy lifting work.

Apparently the Toyota mechanic readily heard knocking in the differential with a stethoscope.

A few other points that were suggested; the tires are new, everything good there. All the fluids were changed in early March. Actually, I suspected the differential and that it might have been drained but not refilled, but no. At the cabin I don't have a garage or a safe lift, only ramps. So, to the shop it went.

For the past several months i've been hauling heavy loads of apple wood from Palisade. It's now more expensive smoking wood and firewood.

[Irving]

Let us know when you do decide to let that '85 go please.

[def90]

Fetzer valve.. or maybe the ball bearings..