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Most 4WD systems are designed to be shifted in and out "on the fly". It is less stressful for the drive train doing it while in park however. 4WD does not like cornering - especially on "grippy" surfaces such as dry asphalt (why would you need 4WD on dry asphalt, anyway?). Dry asphalt is really tough on 4WD as the the tires may have minute differences in circumference as a result of wear and since all are spinning at the exact speed (even going straight ahead), those difference add up and strain the drive train. Slippery surfaces allow the tires to slip away those differences as soon as they begin to appear. Even wet pavement allows this to happen, tho not as easily as grass, dirt, snow or ice.
Drive in a tight, complete circle on dirt and you'll see that there's a shorter path of tracks for the inside tires than those on the outside. Yet, the 4WD locks all wheels to turn the same amount. The jerking during the cornering that you're feeling is the inside tires trying to spin to "catch up" to turning at the same rate as the outer tires. See the video linked below.
Check your manual and you'll likely be cautioned against running 4WD on dry pavement for these reasons.
what type of tire did you get?? hiway tire..or a mud/snow tire..there is a difference..you can usually tell by the tread pattern.. a highway tire is designed to help remove water to the sides and away from the rubber facing..and has consistent lines in it.. a traction tire has blocks on the tread surface that gives the loose snow some where to go when driven over ..and this tread is self cleaning as the tire rotates..the tread is normally a bit deeper also..just because they are new dont mean they are the right ones..you may also need to invest in a set of traction grippers that are put on the wheel for deep snow..(like snow chains)..however check on your state and local laws allowing usage before purchasing..the newer ones are a type of cable system that has ferrules on the road surface..
hi, if you mean better grip ?? or the tires worn if so new tires would help, if you mean the wheel spinning, the trick is to adjust the overall speed for example when going over mud , you need to turn down the speed pot and don\'t push forward so hard on the joystick, it\'s tricky but can be done ...Hope that helps...
If you must replace the traction tires, go to your nearest local hobby shop that deals in trains and purchase a set of traction tires. If none are available, purchase a bottle of "Bull Frog Snot" and apply the snot in the grooves where the traction tire's would go. If this is one of the battery powered trains, you might be better off just replacing the locomotive, they can be purchased very inexpensively on the online auction site beginning with an E and ending with a Y. If it is one of the electric sets, just do the bull frog snot remedy, that way you'll have a bottle of the stuff available for the next time you need it.
When you have 4x4 engaged, you take the differentiation out of the equation to allow the tires to turn at different speeds. With no differentiation between the tires, you drive train binds up. What you are feeling is the binding forces overcoming the traction of the tires on the road surface and relieving the stress on the components.
If you are feeling this binding, you are driving on a hard, high-traction surface which does not require 4x4. In loose, slick or low-traction situations, your tires slip slightly so the drive train does not build up stress on components.
Using 4x4 in situations where it is not necessary can lead to premature failure of locking hubs and other driveline components.
If WD-40 got on belt, and squeak went away for a while, it may just need a new belt. The humming noise sounds like a worn wheel bearing that should be checked and replaced if needed. If squeak goes away when you push slightly on brake pedal, it may be rotor on same side as wheel bearing making the noise due to slight shifting of rotor because of worn bearing.You can try swapping tires on front from one side to other to confirm it isn't tire problem as well. If noise shifts to other side, then it's a tire.
transmission computer is receiving a sensor signal indicating that a wheel is losing traction also make sure all tires are same height and diameter ( worn and soft tires could cause weird feedback signals, also worn shocks and springs may allow the wheel(s) to bounce around a lot making it appear as though its got no traction