Down the mountain in 4 Low and 2nd gear - Ford Powerstroke Diesel Forum
 
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post #1 of 8 Old 07-06-2009, 05:45 AM Thread Starter
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Down the mountain in 4 Low and 2nd gear

I didn't think i had much choice. coming down about 4 miles of steep gravel road yesterday i thought i was going to smoke my brakes. i locked in the hubs, put it in 4 Low, and in 2nd gear. i rode that down the steepest parts of the road, and went back to normal Drive for the flatter parts relying on brakes.
I was hauling a camper in the truck bed, so i was HEAVY. about 11,000 weight total.
As far as I can tell the differential and front axle stayed nice and cool, and it sure saved my brakes from smoking up in a few 1-mile steep stretches.
so did i risk damage to anything?
I never let the speed get up over 8-10 mph.

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post #2 of 8 Old 07-06-2009, 05:48 AM
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You can also put it in tow haul mode. This will act as a jake brake and help you slow down.
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post #3 of 8 Old 07-06-2009, 05:56 AM
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Originally Posted by 03-blue-Powerstroke View Post
You can also put it in tow haul mode. This will act as a jake brake and help you slow down.
Not with a 7.3. Thats a 6.0 only thing

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post #4 of 8 Old 07-06-2009, 08:43 AM Thread Starter
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Originally Posted by 03-blue-Powerstroke View Post
You can also put it in tow haul mode. This will act as a jake brake and help you slow down.
Sure... Sure... rub it in!

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post #5 of 8 Old 07-06-2009, 08:49 AM
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should be fine. Is it doing something odd now?

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post #6 of 8 Old 07-06-2009, 08:52 AM Thread Starter
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should be fine. Is it doing something odd now?
No Sir, seems great. I just didn't know if what I did was too stressful on the differential or trans. Everything was smooth and cool. I won't have many situations where I need to do this instead of braking, but I am concerned that when I do I'm properly using the truck.

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post #7 of 8 Old 07-06-2009, 08:55 AM
PMR = JUNK

 
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You wont hurt the diffs or t case by downshifting to hold speed.

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Yeah, I'd probably feel a bit drained after firing twice in rapid succession.
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post #8 of 8 Old 07-06-2009, 08:57 AM
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As long as you keep the diff/transfer case,trans fluids fresh, you shouldn't have an issue using a truck for what it's made for.

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