Alaskan89XJ
NAXJA Forum User
- Location
- Alaska
Manual Transmission Symtoms;
In 2-Wheel drive, in neutral, or when I press the clutch "pedal down".., no noise.
In 2-Wheel drive, traveling down the road in; first, second, third, or fourth gears, (have not tried 5th, or reverse), i.e., with the "pedal up", a progressively louder sound of a combination of chirps, and a gravelly sound ensues. Traveling, and pressing down the clutch pedal, or going into neutral.., no noise.
At idle.., my first thought, miles ago, was a problem with the water pump bearings as the pulley gives a 1/16 of an inch laterally, hence my thinking was that the slight chirp was from it. The chirp would go silent after awhile, (minutes, or tens of minutes), i.e, at another place at idle, blah, blah. I have a replacement for that issue, (Rockauto).
However the noise has gotten much louder, and the chirp is masked now, or at the very least difficult to hear with the much louder sounds.
My second thought was that perhaps there is a problem with the throw-out, (release), bearing, arm, or some issue between the clutch/pressure plates. Defective hydraulic system actuation to the throw lever of the throw-out bearing?
However, I detect no slippages whatsoever, and the pedal travel seems to be just fine, i.e., no change for thousands of miles, and going up long steep grades at highway speed, no problem.., other than the constant gravelly sounds.
My third, and current thought is that the input shaft bearing of the transmission is going out.
My diagnostics have me confused. Any suggestions? I have a spare BA10/5, and would rather try that as a direct replacement if necessary. I'd rather do that than hunting down a Renix era specific AX15, and then the likely extra work at any other modifications, blah, blah. If I can eek another 75 k miles, that'd be good as I'd say the service life of the entire vehicle is way past it's half-life, lol, requiring a near complete restoration at that 300k mark.
I have not thought too much about it's OEM pilot bearing being at fault.
I'm done guessing, and hope others might chime in, i.e., those having had the very same symptoms, and thereby having pin-pointed the component at fault.
Won't be able to make any further diagnostic short runs in the Cherokee for a few days, but will.., taking down notes.
In 2-Wheel drive, in neutral, or when I press the clutch "pedal down".., no noise.
In 2-Wheel drive, traveling down the road in; first, second, third, or fourth gears, (have not tried 5th, or reverse), i.e., with the "pedal up", a progressively louder sound of a combination of chirps, and a gravelly sound ensues. Traveling, and pressing down the clutch pedal, or going into neutral.., no noise.
At idle.., my first thought, miles ago, was a problem with the water pump bearings as the pulley gives a 1/16 of an inch laterally, hence my thinking was that the slight chirp was from it. The chirp would go silent after awhile, (minutes, or tens of minutes), i.e, at another place at idle, blah, blah. I have a replacement for that issue, (Rockauto).
However the noise has gotten much louder, and the chirp is masked now, or at the very least difficult to hear with the much louder sounds.
My second thought was that perhaps there is a problem with the throw-out, (release), bearing, arm, or some issue between the clutch/pressure plates. Defective hydraulic system actuation to the throw lever of the throw-out bearing?
However, I detect no slippages whatsoever, and the pedal travel seems to be just fine, i.e., no change for thousands of miles, and going up long steep grades at highway speed, no problem.., other than the constant gravelly sounds.
My third, and current thought is that the input shaft bearing of the transmission is going out.
My diagnostics have me confused. Any suggestions? I have a spare BA10/5, and would rather try that as a direct replacement if necessary. I'd rather do that than hunting down a Renix era specific AX15, and then the likely extra work at any other modifications, blah, blah. If I can eek another 75 k miles, that'd be good as I'd say the service life of the entire vehicle is way past it's half-life, lol, requiring a near complete restoration at that 300k mark.
I have not thought too much about it's OEM pilot bearing being at fault.
I'm done guessing, and hope others might chime in, i.e., those having had the very same symptoms, and thereby having pin-pointed the component at fault.
Won't be able to make any further diagnostic short runs in the Cherokee for a few days, but will.., taking down notes.