Howdy folks,
I picked up my first 80 last week (traded my 40 crawler for it) and drove it about 100 miles up until this point. I had time today so I was messing with my lockers/ tcase and I couldn't hear or feel the CDL engaging or disengaging. I went home and engaged the both front and rear ockers in high range, which I thought was funny because they require the center locker to be engaged in order to work. First I jacked up one wheel and tried to turn it (without the axle locker engaged and wasn't able to turn the wheel-but maybe I wasn't trying hard enough, not sure how much force is needed to overtake the viscous coupler)
Then I put the truck on jack stands and, with all the wheels in the air, I turned 1 rear wheel and 1 front spun. This would be normal with a viscous coupler, correct?
The truck drives normally, no real scrubbing while I turn, no chirping either. So it's hard to determine if the CDL in on or off.
I am a little worried about trans wind up but it seems fine. I won't drive it anywhere far in the near future until I have this figured out.
Onto the diagnosis/description:
-No ABS light/ No CDL dash indicator light
-P/O did not install the CDL switch (I'll check if it has the 7 pin mod later tonight)
-30a fuse in the cab is good
-buying a multimeter tonight to check the CDL control relay by the left foot kick panel
-no CDL actuator noise going between high-N-low or low-N-high but no ABS or CDL dash indicator light is present (but the ABS light does work, as I see it light up during startup but turns off while I drive)
-electrical connectors at actuator on tcase seem intact but will test with multimeter
I've read a few threads so far, and from what I'm reading I'm assuming it could be:
1. a bad CDL control relay
2. broken actuator
3. broken viscous coupler
4. funky wiring allowing axle lockers to engage without CDL engaging (or disengaging)
Sorry for posting another "CDL issue" but from what I read I couldn't find the same symptoms that someone else has fixed. But I'll keep looking.
If any of these symptoms ring a bell and someone has the answer, let me know! If it's not the relay I'll most likely drop the tcase tomorrow and take off the actuator.
Cheers,
Nikolai
I picked up my first 80 last week (traded my 40 crawler for it) and drove it about 100 miles up until this point. I had time today so I was messing with my lockers/ tcase and I couldn't hear or feel the CDL engaging or disengaging. I went home and engaged the both front and rear ockers in high range, which I thought was funny because they require the center locker to be engaged in order to work. First I jacked up one wheel and tried to turn it (without the axle locker engaged and wasn't able to turn the wheel-but maybe I wasn't trying hard enough, not sure how much force is needed to overtake the viscous coupler)
Then I put the truck on jack stands and, with all the wheels in the air, I turned 1 rear wheel and 1 front spun. This would be normal with a viscous coupler, correct?
The truck drives normally, no real scrubbing while I turn, no chirping either. So it's hard to determine if the CDL in on or off.
I am a little worried about trans wind up but it seems fine. I won't drive it anywhere far in the near future until I have this figured out.
Onto the diagnosis/description:
-No ABS light/ No CDL dash indicator light
-P/O did not install the CDL switch (I'll check if it has the 7 pin mod later tonight)
-30a fuse in the cab is good
-buying a multimeter tonight to check the CDL control relay by the left foot kick panel
-no CDL actuator noise going between high-N-low or low-N-high but no ABS or CDL dash indicator light is present (but the ABS light does work, as I see it light up during startup but turns off while I drive)
-electrical connectors at actuator on tcase seem intact but will test with multimeter
I've read a few threads so far, and from what I'm reading I'm assuming it could be:
1. a bad CDL control relay
2. broken actuator
3. broken viscous coupler
4. funky wiring allowing axle lockers to engage without CDL engaging (or disengaging)
Sorry for posting another "CDL issue" but from what I read I couldn't find the same symptoms that someone else has fixed. But I'll keep looking.
If any of these symptoms ring a bell and someone has the answer, let me know! If it's not the relay I'll most likely drop the tcase tomorrow and take off the actuator.
Cheers,
Nikolai
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