This is the electric motor inside your servo that actuates your 4wd/2wd/diff locker. When the servo goes out on these bikes, it's more than likely the small electric motor. Simply pull the servo off the front differential, open it up and you will see the small motor inside. I pulled the complete diff out in the instructions due to having to change a seal but you can do this with it still in the bike.
If you have a skid plate on you will have to remove it to access the bottom bolt on the servo. I also recommend having the bike in 2wd to ease in installing the servo back on the diff.
Remove the 3 bolts that hold the servo on the diff. Gear oil is going to pour out unless you drain it first.
Soory last pic 5
Once removed installation is the opposite. Just be sure not to turn anything inside the casing once you open it. The small worm gear on the motor doesn't matter just don't turn anything else.
Install back on the bike fill with gear oil and enjoy your 4wd and the money you saved.
pic 1
Once the servo is removed from the diff. Remove the six T-25 tamper resistant tq screws that hold the servo together.
Once you get the screws out, carefully pry the servo apart taking extra care not to turn I have a 2008 grizzly 700 and it won't drive (move - 26147106-wuoh52pvdxpwqpeytk4hf153-3-9.jpg it will look like this.
pic 3
You can see the two screws that hold the little motor in.
pic 4
Remove those two screws and carefully pry up on the motor and remove it and the small gear attached to the end of it.
Picture of the motor removed.
SOURCE: 2001 Dodge Durango stuck in 4 wheel-Low. Won't switch back to 2WD
Just to clarify, the "transmission" is not stuck in 4-Lo. It is the "transfer case" that is attached to the transmission that actually engages the 4-Hi and 4-Lo modes. To properly shift your vehicle into 4-Lo, you know that you have to shift the transmission into neutral and slow down to less than 5 mph. Once your vehicle slows down to this range, your can switch your transfer case into 4-Lo mode. Due to the inner workings of the transfer case, the actual shift into 4-Lo may take a few seconds to complete. This is normal and does not signify that there is an issue. All transfer cases that have 4-Lo mode will act this way regardless of the make or model. To make a long story short, to shift out of 4-Lo you must follow the same steps that you took to shift into 4-Lo, just in reverse order. Switch the transfer case to 4-Lo mode if it isn't already there. Slow down to less than 5 mph (your vehicle must be moving, though). Then, shift your car into 4-Hi or 2WD. Give your vehicle several seconds to complete the shift. The transfer case indicator light will flash until it is complete. When it does complete the shift into the new gear mode, you will most likely hear a "clunk" (the range sleeve inside the transfer case disengages from its mating spline) from under your car. Again, any transfer case with 4-Lo (regardless of make or model) will exhibit this same noise. This should help you get out of 4-Lo. It is good practice to shift your car into and out of 4-Lo at least a few times each year to keep all of the splines free of corrosion and build-up. Based on the age of your vehicle, your transfer case may also need a complete flush and some new transmission fluid. Hope this helps.
SOURCE: my 99 suburban 2500 is stuck in 4 wheel drive but
drive in reverse for 20 feet. if that doesn't work try disconnecting the battery neg first for a couple min hit your 2wd button.
SOURCE: 1996 gmc 1500 four wheel drive
we have the same problem my son checked the switch and it is good how do you check the actuator?
SOURCE: 4x4 K1500 Chevy Truck, 4 wheel drive repair instructions
There are a number of different hub systems so this may not work but it has worked for me on both auto and manual locking hubs. On a flat surface without traffic. Put the trans into neutral, shift the transfer case into 4x4, shift the trans into reverse and back the truck up 15-20 feet. Completely stop and shift trans into drive. See if this has locked the hubs in. If not, you can also try following the same instructions except shifting into 4wd low. Sometimes the hubs need a "bump" to get them to slip into place. Keep In mind that if the 4 wd low select works, you need to shift it back into 4 wd high before continuing! When taking the truck out of 4wd to 2wd, I recommend the same, shift to neutral, select 2wd, back truck up, shift back to drive and check. Its entirely possible that your hubs need maintenance (they're often overlooked) but hopefully this will get you going. Please let me know if thus worked or if I can offer other suggestions. Good luck!
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