Please explain 2Lo?
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Laughing Gas
Joined: Aug 2017
Posts: 802
Likes: 197
From: Tupelo, MS
Please explain 2Lo?
Taken from another thread we may have hijacked. Lol.
Guys with manual transfer cases and floor shifters. Obviously 17 and up models because that is where we are in this subforum.
I have read about 2Lo and how it's different than locking the diff lock on esof systems. I did see a pic of a 17 floor shifter with 2h,4h and 4l. Dash button had the diff lock.
I was told diff lock and 2lo are different so my question is if they are how? If you have 2lo how do you engage it?
Guys with manual transfer cases and floor shifters. Obviously 17 and up models because that is where we are in this subforum.
I have read about 2Lo and how it's different than locking the diff lock on esof systems. I did see a pic of a 17 floor shifter with 2h,4h and 4l. Dash button had the diff lock.
I was told diff lock and 2lo are different so my question is if they are how? If you have 2lo how do you engage it?
Laughing Gas
Joined: Oct 2017
Posts: 787
Likes: 73
From: Lansing MI
ESOF trucks have hubs that are Locked or Auto (they lock when you turn the **** on the dash). MSOS trucks have hubs that are Locked or Unlocked.
With ESOF you select 4Lo, and the truck applies vacuum pressure to lock the front hubs. In the MSOS truck, you can shift to 4Lo, but not lock the hubs. In this case the transfer case in in Lo, but the front axle is still unlocked, therefore 2Lo.
There is a mod that some have discussed, to wire an up-fitter switch to interrupt the circuit that activate the vacuum system so they 2Lo can be had on the ESOF trucks.
With ESOF you select 4Lo, and the truck applies vacuum pressure to lock the front hubs. In the MSOS truck, you can shift to 4Lo, but not lock the hubs. In this case the transfer case in in Lo, but the front axle is still unlocked, therefore 2Lo.
There is a mod that some have discussed, to wire an up-fitter switch to interrupt the circuit that activate the vacuum system so they 2Lo can be had on the ESOF trucks.
Laughing Gas
Joined: Dec 2017
Posts: 1,077
Likes: 8
Think of the diff lock as a traction aid to send equal power to both rear wheels. And think of low range as though you’re shifting down to a lower gear for slowly crawling across rough terrain. Whether it’s 2Lo or 4Lo will depend on whether or not the hubs are locked but the low gear ratio will be the same for 2Lo and 4Lo. The diff lock and 4WD are two separate systems and can be used independently of each other or together depending on what the situation calls for.
Thread Starter
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Laughing Gas
Joined: Aug 2017
Posts: 802
Likes: 197
From: Tupelo, MS
ESOF trucks have hubs that are Locked or Auto (they lock when you turn the **** on the dash). MSOS trucks have hubs that are Locked or Unlocked.
With ESOF you select 4Lo, and the truck applies vacuum pressure to lock the front hubs. In the MSOS truck, you can shift to 4Lo, but not lock the hubs. In this case the transfer case in in Lo, but the front axle is still unlocked, therefore 2Lo.
There is a mod that some have discussed, to wire an up-fitter switch to interrupt the circuit that activate the vacuum system so they 2Lo can be had on the ESOF trucks.
With ESOF you select 4Lo, and the truck applies vacuum pressure to lock the front hubs. In the MSOS truck, you can shift to 4Lo, but not lock the hubs. In this case the transfer case in in Lo, but the front axle is still unlocked, therefore 2Lo.
There is a mod that some have discussed, to wire an up-fitter switch to interrupt the circuit that activate the vacuum system so they 2Lo can be had on the ESOF trucks.
Tuned
Joined: Jan 2018
Posts: 272
Likes: 23
Good clarification guys. Thanks.
One last question.
My truck is Electronic shift. (Auto hubs)
when shifting to 4high, are my front hubs locked automatically?
What happens if in 2high (normal driving) if I get out and turn my front hubs to “locked”
Also, why do the hubs have a manual lock feature, is this a backup ?
One last question.
My truck is Electronic shift. (Auto hubs)
when shifting to 4high, are my front hubs locked automatically?
What happens if in 2high (normal driving) if I get out and turn my front hubs to “locked”
Also, why do the hubs have a manual lock feature, is this a backup ?
Laughing Gas
Joined: Dec 2017
Posts: 1,077
Likes: 8
When in “Auto” your hubs will lock and your xfer case will engage the front driveshaft anytime you turn the **** to 4Hi or Lo. If you maunually lock your hubs, the front axle shafts and drive shaft will turn but it will not be engaged in the xfer case until you turn the **** so you will not be in 4WD just by locking the hubs.
The manual hubs offer some peace of mind knowing you can lock the hubs if they fail to lock. I had a Jeep Comanche (dating myself) with auto hubs and they wouldn’t lock when I needed them to. It was a long walk back to civilization. Turned out to be a pinched vacuum line. Had the truck been equipped with the manual option like our Fords, I would have saved a ton of shoe rubber!
The manual hubs offer some peace of mind knowing you can lock the hubs if they fail to lock. I had a Jeep Comanche (dating myself) with auto hubs and they wouldn’t lock when I needed them to. It was a long walk back to civilization. Turned out to be a pinched vacuum line. Had the truck been equipped with the manual option like our Fords, I would have saved a ton of shoe rubber!
More Turbo
Joined: Jan 2011
Posts: 726
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More Turbo
Joined: Oct 2017
Posts: 742
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From: S. Indiana
Here's the link:
https://www.ford-trucks.com/forums/1...rride-mod.html
https://www.ford-trucks.com/forums/1...rride-mod.html
Last edited by jbrnigan; Nov 10, 2018 at 08:11 PM. Reason: rewrite
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From: Too close to Houston
It's in the manual under "Towing". (Reads better with their formatting...)
Four-wheel Drive Vehicles Equipped with an Electronic-shift Transfer Case Only tow a four-wheel drive vehicle that has an electronic-shift transfer case with all wheels on the ground. To do this, place the transfer case in its neutral position and engage the four-wheel-down towing feature. Perform the steps in the following section after positioning your vehicle behind the tow vehicle and properly securing them together. Note: Make sure you properly secure your vehicle to the tow vehicle. Four-wheel-down Towing 1. Put the ignition in the on position, but do not start the engine. If your vehicle has an ignition key, turn the key to on. If your vehicle has intelligent access, press the engine START/STOP button once without pressing the brake pedal. 2. Press and hold the brake pedal. 3. Rotate the four-wheel drive switch to 2H. 4. Shift the transmission to neutral (N). 5. Rotate the four-wheel drive switch from 2H to 4L and back to 2H five times within seven seconds. Note: If completed successfully, the information display shows a message indicating that your vehicle is safe to tow with all wheels on the ground. Note: If you do not see the message in the display, you must perform the procedure again from the beginning. Note: You may hear an audible noise as the transfer case shifts into its neutral position. This is normal. 6. Leave the transmission in neutral (N) and turn the ignition as far as it will go toward the off position (it will not turn fully off when the transmission is in neutral). If your vehicle has an ignition key, you must leave the key in the ignition while towing. To lock and unlock your vehicle, use the keyless entry keypad or extra set of keys. If your vehicle has intelligent access, press the engine START/STOP button once without pressing the brake pedal. You do not need to leave your keys in the vehicle. You can lock and unlock your vehicle as you normally do. 7. Release the brake pedal.
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