HELP!
11-30-2013, 04:25 PM
#5
CF Veteran
was it as you were shifting into 4wd?
did you shift trans into neutral before you pulled on the 4x4 lever?
did you shift trans into neutral before you pulled on the 4x4 lever?
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12-02-2013, 01:16 AM
#10
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Join Date: Aug 2011
Location: San Jose
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Year: 89
Model: Cherokee
Engine: 4.0 I6
Ok
Your axles need to rotate at different speeds when the vehicle is not traveling in a perfectly straight line in order to keep the outside wheels from dragging, or the inside wheels from skipping depending on the situation. A differential allows that to happen.
When you are in 4wheel drive (with a 231 transfer case) the engine is trying to give both the front and rear axles the same rotation. In a straight line this is fine on pavement, but if you try and turn on pavement the wheels need to travel at different speeds or you will start damaging driveline components. When you're off-road I.e dirt, gravel, snow, mud, etc the wheels can slip and spin all they want and still maintain the same speed (wheels, not the jeep) and your driveline will be happy. More or less anyway.
So to recap; on pavement, there is too much traction which means the wheels need to travel at different speeds or bad things (like your whining problem) will happen. Offroad your wheels can slip so that they are all going the same speed, less damage to driveline under normal circumstances.
Questions?
Your axles need to rotate at different speeds when the vehicle is not traveling in a perfectly straight line in order to keep the outside wheels from dragging, or the inside wheels from skipping depending on the situation. A differential allows that to happen.
When you are in 4wheel drive (with a 231 transfer case) the engine is trying to give both the front and rear axles the same rotation. In a straight line this is fine on pavement, but if you try and turn on pavement the wheels need to travel at different speeds or you will start damaging driveline components. When you're off-road I.e dirt, gravel, snow, mud, etc the wheels can slip and spin all they want and still maintain the same speed (wheels, not the jeep) and your driveline will be happy. More or less anyway.
So to recap; on pavement, there is too much traction which means the wheels need to travel at different speeds or bad things (like your whining problem) will happen. Offroad your wheels can slip so that they are all going the same speed, less damage to driveline under normal circumstances.
Questions?
12-02-2013, 06:02 AM
#11
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Year: 1990
Model: Cherokee (XJ)
Engine: 4.0
Ever checked the fluid level in that transfer case?
Here's how to shift bTW>
Here's how the factory suggests you shift the transfer case and I've been doing this since these things were new and I worked at the dealership. Quoted from the owner's manual.
"To engage, shift the transfer case lever from 2H to 4H while the vehicle is moving at any legal speed". I let off the gas, throw the lever, and then tap the gas and let off.
4L position: " To engage, slow the vehicle to 2-3 MPH , shift the transmission to Neutral, then shift the transfer lever to the right and pull firmly rearward to 4L".
Here's how to shift bTW>
Here's how the factory suggests you shift the transfer case and I've been doing this since these things were new and I worked at the dealership. Quoted from the owner's manual.
"To engage, shift the transfer case lever from 2H to 4H while the vehicle is moving at any legal speed". I let off the gas, throw the lever, and then tap the gas and let off.
4L position: " To engage, slow the vehicle to 2-3 MPH , shift the transmission to Neutral, then shift the transfer lever to the right and pull firmly rearward to 4L".