When a Hot Diff Turns Into a Major Problem
You’re cruising up north in your Kenworth SAR610.
The roads are long, the sun’s high, and the load is ticking over fine.
But then… something doesn’t feel right.
The diff feels hot. Not the first time — but this time it’s different.
You ease off the throttle. That uneasy feeling settles in.
A few kays later, it confirms itself.
A low growl. Then loss of drive.
You limp it back to Webbie’s and tell us what happened.
First thing we check? The oil.
And it tells us everything.
Burnt.
Metallic.
The kind of smell that sticks in your nose for days.
The bearings were cooked. The crown wheel and pinion? Shattered.
No saving this one.
But there’s a silver lining — the replacement diff comes with an oil pump.
That means better lubrication, better cooling, and way less chance of this happening again.
We got it swapped out, flushed, filled with fresh oil and sent the truck back out — strong, smooth, and ready to work.
Same truck. Stronger diff. A fresh start.
📍 Webbie’s Mechanical | Welshpool
📞 (08) 9353 1289
Fast, proper repairs. No drama. Just results.
