The reason why the 'super duty' ford trucks have manually locking hubs is by design....for a vacuum actuated hub to work, the wheel needs to spin min 3/4 of a turn. They began to provide automatic locking hubs, and eventually implemented the use of an actuator. When you have the hubs in Lock position the front axles are locked at all times.When you put in auto the hubs use vac to apply when you turn on the switch.The relays were bad about failing on the F250 that allow the hubs to engage. Checked Voltage to Hub Lock Solenoid I checked for voltage at the hub lock solenoid. If you develop a leak the hubs will become inop, and will need to be fixed. The auto lock hubs when serviced properly will give you years of hassle free service. To engage LOCK, turn the hub locks completely clockwise; to engage AUTO, turn the hub locks completely counterclockwise. You can take it as two cogs are spinning, and the vacuum pulls them closer to lock them in a four-wheeled drive. 99. The automatic locking hub is now a standard addition to Ford vehicles, so, unless you are driving an older model or Super Duty vehicles such as the F250 or F350, you can expect your activation of 4WD to be easy and comfortable. A locked differential is great for serious off-roading because it keeps both front wheels turning regardless of traction. When the transfer case is engaged, the torque on the front axle twists the internal componants of the hub lockinging them into place,. The hub locks will automatically engage when the vehicle is driven. This allows for computer assistance such as Adaptive Cruise Control, and Electronic Stability Control. When torque is applied by the driveshaft, it forces the hub to slide in and lock. When in the lock position, the hubs are considered "manual." SuperDuty trucks are 'work trucks' so they are often off road, plowing snow etc...if you were in 2WD and got stuck in a vacuum actuated system it would be near impossible to have those hubs lock in if they truck cant move. Some of the older types require the vehicle to stop and back up a short distance to engage the locking mechanism. As for the other questions, I don't have that info on me. When torque is applied by the driveshaft, it forces the hub to slide in and lock. Contact Us - To check release, hold the axle shaft steady and rotate the wheel backwards. On some applications, only one side unlocks when in the 2WD mode. Hey guys. It is not getting the signal it needs. Terms of Service - The locking mechanism inside an automatic locking hub is sort of like a one-way clutch. It does work when switching the hubs to "Lock… They are some post on fullsizebronco.com but I cannot view the pics on there. The flange also has a FREE position, which prevents the hubs from locking. The tire then goes on over the locking hub. The hub then remains in the locked position as long as the transfer case remains in four-wheel drive. The wire that is supposed to have constant voltage does. This system uses auto-manual hub locks that can be engaged and disengaged automatically based on the 4×4 mode selected. Rotate the wheel forward again and it should turn freely. How do they work? i purchased a 2000 ford f 250 v8 diesel power stroke from a chrysler dealer. 1978 - 1996 Big Bronco - how do the auto locking hubs work - Hey guys, I to need some guidance on my auto hubs. And although auto hubs are convenient, they don't allow for a complete disconnect from the four-wheel-drive system. Unlocking one or both hubs allows the front wheels to turn at different rates for easier steering and turning when maximum traction isn’t needed. the engagement is in the t-case. When torque is applied by the driveshaft, it forces the hub to slide in and lock. Check for power at fuse #20 or #21, GEM FUSE and Stater interupt relay. The locking mechanism inside an automatic locking hub is sort of like a one-way clutch. There are also aftermarket hub conversions for changing manual locking hubs to automatic hubs, or replacing troublesome OEM automatic locking hubs with heavy-duty manual locking hubs to improve traction and durability for serious off-road use. I had my son switch the selector switch back and forth while I tested the other two with the multimeter. In 2WD with locking hubs disengaged rear drive shaft, rear differential and rear axle are rotating. The hub then remains in the locked position as long as the transfer case remains in four-w… As long as the hub receives torque from the transfer case, the hub will remain locked, even while in reverse. When they are unlocked, you do not have the ability to put your vehicle into 4WD. If the axle shaft turns when you spin the wheel, it means the hub has not disengaged. Okay guys, anyone know who makes the auto lock hubs for Ford? Pair of 2 PCS 4WD Auto Locking Hub Left & Right Fits for Ford F-250 F-350 F-450 F-550 1999-2004, Excursion 2000-2005, Ford Expedition Lincoln Navigator 2001-2002 Replace# 1C3Z3B396CB 600-203. If both shafts are turning, but one wheel is not, the problem is a bad hub on the wheel that isn’t turning. Still running strong! The tire then goes on over the locking hub. Red lines indicate rotating parts. This will help you from getting those siezed hubs. Mine on my 94 Bronco are not engageing at all. so ya, if the wheels are turning, so are the front axles. Almost all power train systems are controlled by a computer. Some automatic hubs, like the “Selectro” automatic locking hubs on Jeeps with six-bolt lock-outs, have an “auto” and “lock” position on the dial. Your locking hubs on your Ranger have a flange base that slides over the wheel studs. The locking mechanism inside an automatic locking hub is sort of like a one-way clutch. Product information and expertise direct from all the best auto parts manufacturers, ASE PS2 Test Preparation Guide: Automatic Transmission/TransaxleAutomatic. Put the transmission in park, set the parking brake and raise the chassis so one of the front wheels is off the ground while the other is still on the ground. I do, its Warn. The driver may not notice anything is wrong until he finds himself stuck axle deep in mud and realizes the front wheels aren’t doing anything. They’re also designed to work perfectly with modified trucks that wear larger tires, which is music to the ears of most Ford Super Duty owners who have beefy meats installed on their trucks. For proper operation, make sure that each hub is fully engaged and that both hub locks are set to the same position (both set to LOCK or both set to AUTO). 1995 Ford F150 Extended cab, 4x4 with automatic locking hubs. 2) Two Speed Automatic 4WD System: On the inside of the hub is a spring and splined collar. When the driver shifts to two-wheel drive, the clutch mechanism inside the hub slides back out and releases the hub, allowing the wheel to turn independent of its axle shaft. I have a 2008 F350 and the automatic hubs are not working. This allows them to turn as one component. auto hubs first thing to do is pull the vaccum hose off of the back of the hub. The axles will then spin together simultaneously and will receive … Or, he may hear some grinding noises when he shifts to four-wheel drive and may think something is wrong with the transfer case or front differential. Diagnosing an automatic locking hub problem may require test driving the vehicle or raising a front wheel to see if the hub is engaging and disengaging properly. They’re built to take the beatings modified rigs with bigger tires can dish out. A one mpg difference may not sound like much, but every little bit helps. Aug 14, 2009 | 2003 Ford … Other four-wheel-drive vehicles have automatic locking hubs. However, a knowledge of the mechanical and electronic component operation is imperative to successfully diagnosing and fixing these systems. By the way, locking hubs do not create more traction. i'll look in my haynes tomorrow and see what it says. i have to lock the hubs manually to get theto work. If the driveshaft is not turning, the vehicle is going to need repairs to the transfer case. Anything that binds the internal mechanism can prevent it from sliding and releasing. I don't think my 4wd is working on "Auto" mode. Axles, differentials, and driveshafts still turn, even in 2WD, which adds extra wear and tear on a vehicle and decreases fuel economy. what - Answered by a verified Ford Mechanic We use cookies to give you the best possible experience on our website. Get it as soon as Thu, May 13. Note: the 2001-2011 4WD Ford Ranger has a live front axle. When you go from a forward direction to reverse the hubs actually disengage and re-engage very quickly. A helpful review focusing on automatic transmission components for the ASE PS2 Test. Engage the locking hubs by rotating the hub lock control from FREE to LOCK, then move the transfer case lever from 2H (2WD) to 4H (4x4 High) at a stop or a vehicle speed below 3 mph (5 km/h). There are a number of automatic locking hub designs, and not all are capable of engaging while the vehicle is in motion. I know how the automatic and lock in function is supposed to work. apply vaccuum and see if it holds vacuum. On the inside of the hub is a spring and splined collar. Fuel economy may improve as much as one mile per gallon, depending on the vehicle, by disconnecting the front wheels. Hopefully someone who knows the 4X4 system on these trucks can actually answer your question though.... from what i know the hub gets locked in once the transfer case is engaged and the torq locks it in. The hubs do not affect or change the differential at all. Manual Locking Hubs (If Equipped): Note: Auto-manual hub locks can be manually overridden by rotating the hub lock control from AUTO to LOCK. When the transfer case is in two-wheel drive, the hubs should be released, allowing the wheels to turn freely when spun by hand. If the front wheels don’t turn, look at the front axle shafts. If these hubs are not locked, the wheel will not receive power from the axle. On many 4×4 trucks, automatic locking hubs are used to disengage the front wheels when four-wheel drive is not needed. Your locking hubs on your Ranger have a flange base that slides over the wheel studs. Front tires are rolling along (since connected to the axle, they make the front drive line parts … When I push the four wheel drive button the front tires do not engage. Do Not Sell My Personal Information -, By logging into your account, you agree to our. But as long as the transfer case remains in the 2WD mode, the front wheels are not driven. Talk about your 8th and 9th generation Ford F150 trucks. The most common problem with automatic locking hubs is the hub won’t engage. 1978 - 1996 Big Bronco - how do the auto locking hubs work - Hey guys, I to need some guidance on my auto hubs. Auto is also unlocked unless you turn the switch to 4wd on the dash. You then drive froward about 10 feet and the auto locking hubs should then be engaged. The auto locking hubs work off of a vacuum, if there's a leak in the line, they won't engage. When the hubs are locked, the wheels and the CV are powered and spinning by the engine. While pumping fuel, or doing your oil change go and manually move the hub from Lock to Auto 3-4 times. The hubs are, essentially, an axle split in half (right and left). The automatic locking hubs that we see the most on today’s Ford F-150 trucks is the IWE system. When you turn the knob on the hub to lock them in, you force the splined collar to slide down over the splines on the axles stub shaft. AUTOMATIC LOCKING HUBS OPERATION FOUR-WHEEL DRIVE The vehicle must be stopped when you first shift into four-wheel drive. The main advantage of being able to disengage the front wheels on the go is that the driver doesn’t have to stop, get out of his vehicle and twist a dial on the hub to disengage or engage the front wheels. i've heard bad things about auto hubs because when you go from forward to reverse they actually disengage for a second then reengage. Not true. my 06 would only go in to 4x4 if u go tout and locked the hubs because the vacume system stoped working … If a vehicle has been equipped with a locking front differential, some type of manual or automatic locking hub is usually required. That way, if you can’t remember how the parts came apart, you can always refer to the other hub as a guide. If the driveshaft between the transfer case and differential is turning, the problem is in the differential. tryin to find some good pics on how they come apart and how they actually work. When you put the transfer case in 4wd and power is transferred out to the hubs there is a mechanism which overpowers this spring and causes the teeth to engage, locking the hub. The toughest truck around gets a new-look hub: WARN Premium Locking Hubs for Ford 2005 model-year and newer FORD Super Duty trucks. i think they are always locked in and the axles are always turning.... don't quote me on this but I believe there is a air vaccuum system. my 04 had auto and even with them in auto my front axel would spin and i would always have to take them out and push the mechanisam in with my finger for them to disengage. Advertising - Disassembly and reassembly procedures will vary from one hub design to another, so refer to the OEM service information for the specifics. The hub then remains in the locked position as long as the transfer case remains in four-wheel drive. Try turning the wheel by hand again. Place the transmission in neutral and the transfer case selector in the 4H or 4L position. (sort of like twisting on a bottle cap). Mud, rust or worn parts inside the hub can prevent the mechanism from sliding in and locking the hub. however, my mom's 89 wrangler had an air vacuum system to lock the hubs in. They work separately, spinning free of each other and allowing the drive from the rear axle to push them wherever you steer them. My Jeep Grand Cherokee had auto hubs where the axles were always turning and engagement was taken care of in T-case. The axle shaft should now turn with the wheel if the hub is locked. how do the auto locking hubs work on my 94 f150. This should lock the hub. To manually lock the hubs, turn them to the right, where turning them to the left puts them on Auto. This is two-wheel-drive mode, just like a rear-wheel-drive car. 1987 - 1996 F150 - auto locking hubs? This is how I hacked the stock crappy auto locking hubs to … The auto hubs suck IMO my 99 f250 had manual/lock hubs with the lever in the cab and never had any problems. If you don’t have manual or online service information, disassemble one hub at a time. i could be wrong...... but the auto hubs are engaged by the torque creasted from the now operated drive shaft on the front of the t-case when in 4x4 there is something that engages in the front....... well i had a 95 dodge ram with the auto locking hubs, and my front axles turned at all times no matter what.... i know i know, its a dodge, but still haha if the front axles turn at all times, that means the hubs stay locked in at all times, wow, I'm stupid. Aftermarket Products, Reviews & Installation, Suggestions, Comments & Questions about the Forum, Send a private message to 1996 Redneck F150. Front tires are rolling along - only rear tires are pulling. With this setup, the hub on the opposite side remains locked and the axle continues to turn with the wheel. If you put the hubs in the "auto" position, this works in conjunction with "Electronic shift on the fly" (ESOF) vehicles. If you have push button 4x4 with auto locking hubs then you would put your vehicle in neutral and press the 4x4 button. This allows the hub to engage as needed or to remain in the locked position all the time. how do the auto locking hubs work on my 94 f150. In this video i will disassemble and discuss how to repair an automatic locking hub from an 87-96 ford F-150 or Bronco. Another way to check the hubs is to raise the vehicle on a frame contact lift so all four wheels are off the ground. Then start the engine and place the transfer case in four-wheel drive and the transmission in drive. Red lines indicate rotating parts. Location: Northern Sarasota area, Florida, If I had to guess, I'd imagine auto locking hubs work by "automatically locking" themselves lol, The following errors occurred with your submission, Ford F150 Forum - Community of Ford Truck Fans. It will increase fuel economy when used in the hub lock’s recommended AUTO mode. The automatic locking hub does it automatically on the fly. The most noticeable symptoms may be an increase in fuel consumption, noise on the highway and/or increased front-tire wear. The automatic locking hub does it automatically on the fly. The hubs are actuated by vacuum to lock and unlock. SuperDuty trucks are 'work trucks' so they are often off road, plowing snow etc...if you were in 2WD and got stuck in a vacuum actuated system it would be near impossible to have those hubs lock in if they truck cant move. If the front hubs are unable to be unlocked by use of the 4WD mode switch, the hubs may be unlocked by turning the manual locking hub from the AUTO FREE position to the LOCK position and back to AUTO FREE. Other four-wheel-drive vehicles have automatic locking hubs. - Hey guys. Ford autolocking hubs work by mechanical torque. When you activate the automatic locking hub by turning on the 4WD switch from inside the cabin of your Ford F150, the two front axles connect to the drive plate. For the same reasons that prevent the hub from engaging, a hub may also fail to release. If the hub fails to lock, the hub will have to be disassembled and inspected or replaced. Is this true or do they actually lock in ? You should hear a click as the locking mechanism slides back out and disengages the hub. $79.99 $ 79. The automated front locking hubs are vacuum actuated with an actuator inside. To check engagement, rotate the axle shaft backwards. My dad claims that they are just always locked in and the axles are always spinning. Ford recognized this and put the manual locking hubs on all trucks (except the F150). Sold in pairs, the Warn locking hubs for the Ford Super Duty are designed to work … The front axle uses a locking hub (1983-2000) to lock (connect) the front wheels to the axleshafts. Like the CVH, the IWE is a single-solenoid vacuum-operated hublock, but it works backwards. C $348.74. If the front driveshafts are not turning when the transfer case is in four-wheel drive, the problem is inside the differential (broken side gears) or the transfer case (broken chain, shift linkage, etc.).
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