I get asked this question a lot being from Colorado, and having almost all up and down hill grades I am more than glad to help the new driver or the older ones that do or have not run winter mountains.
On slick and snowy roads the jake and power divider can be your worst enemy. If you have your power divider kicked in, going down the mountain, it will lock both axles up if you break traction. Putting you into a Jack Knife situation. The Jake brake if used on any setting higher than 1 can cause the rear axles to break traction.
I have always got down into a lower gear that will allow the jake on 1 plus easy help on the brake from time to time, to ease it off the mountain. And never have the power divider lock in. I always unlock it right at the top. I have drove every winter in Colorado this way sence 1979 and have never had a mishap. Chained up of course.
Its not snowing yet but it will be here before you know, now is a good time to practice chains while your doing nothing anyways. Better now than in cold and snow
Down hill grade on slick hyways
Discussion in 'Experienced Truckers' Advice' started by Antique Pete, Sep 30, 2012.
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FEELTHEWHEEL, ladyfire, EZ Money and 21 others Thank this.
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Good posting and because you are new, I get to be the first to thank you. It is always polite to thank a virgin afterwards, if I remember, it was so long ago, I was young, she was young, the fire place crackled, the wine was never so sweet. Then her father came home with that shotgun. "Thanks" I said as I jumped out the window.
CAXPT Thanks this. -
Excellent advice! Thanks for posting it.
Welcome to TTR! Good to see some of us "ole hands" posting what experience that really makes a difference to some younger drivers.Wargames Thanks this. -
Enjoy Fall now while it lasts (Wolf Creek Pass a few days ago) ..
In a month or two, it'll be this (Raton Summit) ..
TruckerSue, MNdriver, CAXPT and 1 other person Thank this. -
A few other skills for descending beaver slides. Power braking is a good technique to have under your belt. Run the shoulders and drip line where the gravel has been pushed. OR get a log truck job
Boardhauler Thanks this. -
I thank you hands for the replys, and also very good advice. I believe that helping the new guys is a way to help make it safer for all of us. I have a long lost friend at the bottom of the west side of MONARCK.
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Also, at least SOME snow/ice situations can be [mostly] avoided altogether by careful planning, perhaps some OOR miles (where cross-nation travel is involved), time management/planning, and monitoring and keeping abreast of the national weather situation at all times.
i.e. there's two viable ways to run Chicago to Los Angeles and there's rarely a lot of winter weather forecasted going BOTH ways. Find a good national weather forecasting web site and use it regularly, -
I'm not going to argue about Jakes and the setting position for them....however, the power divider issue is another thing.
The old setup of traction (power) to the rear without power divider engaged (rear left was norm) and rear left with forward right when P/D engaged has been changed. The common power is rear left and forward right have continual power without P/D engaged, and all four have power when engaged. the spider gears have been reformatted to the new "theory" as well. When a truck has chains applied, the driver needs to engage the P/D to maintain equal power/traction with the different power/torque application we run on these newer trucks (2005 was the change so I'm told).Working Class Patriot Thanks this. -
What if you have Detroit lockers in each axle? Should the power divider be engaged or disengaged?
gafred99 Thanks this. -
My advice is to always engage the P/D when chained up. It maintains the positive traction from both axles, especially if you have chains on both front and rear drive axles.
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