Heavy-duty logging trucks like the Kenworth W900 utilize advanced power and traction systems, including a Cummins X15 14.9L inline 6-cylinder diesel engine with an 18-speed manual transmission, power divider capability for distributing power between axles, and differential locks that can be engaged on individual or multiple axles to maximize traction on steep, rough terrain with loose gravel.
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Deep Dive
Extreme Logging Trucks 11 Kenworth W900 2022 Cummins X15Added:
Welcome to the channel. I'm Dave Sears.
It's May 28th, 2026. For today's episode, I'm in the cab of a Kenworth W900 logging truck with Steven. Under the hood is a Cumins X-15. It's a 14.9 L inline 6-cylinder diesel engine with an 18-speed manual transmission.
Thanks to Greg Dyson of Little Duke Industries for the green light to do this episode about his truck. And thanks to Stephen Heat.
Heat.
Heat.
Heat.
The truck has a heavyduty frame and suspension.
Its tri drive has power divider capability and diff locks.
Location is E River Logore on the east side of Vancouver Island, BC, Canada.
Heat.
Heat.
Heat up here.
The road up is steep, rough, and has some tight switchbacks.
There's also a cool waterfall about 3/4 of the way up.
>> Happy to go west.
>> Steven has the power divider switched on. He also diff locks the center rear axle when the road starts climbing. And for extra steep sections with loose gravel, he diff locks all three rear axles.
Heat. Heat.
Heat.
Heat.
Are you ready?
Heat. Heat.
Heat. Heat.
Heat up here.
Heat. Heat.
for the steep section. options. On the trip down, the truck is in first gear with the splitter in high.
On the right side of the steering column, there's a lever to independently operate trailer brakes.
Heat up here.
Heat. Heat.
Heat up here.
Heat.
Heat.
Heat.
Heat.
Heat up here.
Heat. Heat.
Heat.
Heat.
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Heat. Heat.
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Heat up here.
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Heat up here.
Heat. Heat.
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Lower right shows the power divider switched on and the center rear axle diff lock activated.
for the steep sections on the way up.
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