You say old school stuff, but this is a great visual of the CAD interior and is very helpful for my 94' YJ too. Thank you for passing down some knowledge.
as a YJ owner (1993 Sahara) with a working vacuum setup, this helped me understand what I have and why my friends want me to swap in a post 1996 XJ axle.
I still use mine flawlessly. The shaft only engages if shifted into 4x4. So, I have found another remedy if the vacuum system failed. Taking the actuator apart you will see the "C" clips that hold the fork in place. Take the "C" clip off on the side that would slide the fork over to the side where the collar engages the shaft. Replace the "C" clip on the opposite side of the fork and this keeps the fork in the engaged position. Now you use your 4x4 shift as normal for off road.
The only problem with a one piece is the differential and driveshaft will turn all the time. Not so bad if you have the 4.0L but if you have the 2.5l it robs a lot of power.
My yj 2.5 ltr has 33s This winter i put it in 4 wheel drive on a hill and the front tires were not spinning . Only rear was . Than i put it on 2 L still nothing .so embarrasing . Can anyone help me why the front wont move . Seems like 4x4 does engages and gets me out of parking lot and when lots of snow on ground but struggles on hills . Is it the big tires ? But in snow it should be easier to spin i guess. My jeep even has lockers There is a red dial up knob incab . I bought the jeep like this all modified
The red knob is not a dial up. It's a pull knob that's cable driven to the shift fork. When you engage your 4wd on the floor, you pull the red knob outwards. It's a manual cable that moves the shift fork to lock the two axles together. The vacuum lines are void. If you trace the black line from the red knob, you'll see that it runs to the shift fork housing cover. It runs into the housing and is connected to the shift fork internally. You will notice that, behind the red knob is possibly a black dial. When you pull the red knob outwards, you can dial the black knob clockwise to tighten up on the rod and lock it in place from working back inwards. It's much better than relying on vacuum to move the fork. Manual activation, over electrical, button, or vacuum is always my choice. If you pull on the knob and it won't move, check the black dial behind it and make sure it isn't tightened down on the shaft. Rotate it counter clockwise to free up the red button to pull. The black dial is basically to keep the red knob/shaft from working back in when it's pulled out. You may not need to use the black dial when the red button is outwards. You will figure that out after you use it. If your red button walks in when it's activated as you are four wheeling, then you'll know to just use the black dial to lock it in place. 😁
You say old school stuff, but this is a great visual of the CAD interior and is very helpful for my 94' YJ too. Thank you for passing down some knowledge.
as a YJ owner (1993 Sahara) with a working vacuum setup, this helped me understand what I have and why my friends want me to swap in a post 1996 XJ axle.
Yep, mine failed on the trail and you can't go far in 2WD.
Yes sir this was definitely a big help, no where in the haynes 84-01 xj manual was a diagram as good as this. Thank you
Awesome! I'm glad this video was helpful.
I still use mine flawlessly. The shaft only engages if shifted into 4x4. So, I have found another remedy if the vacuum system failed. Taking the actuator apart you will see the "C" clips that hold the fork in place. Take the "C" clip off on the side that would slide the fork over to the side where the collar engages the shaft. Replace the "C" clip on the opposite side of the fork and this keeps the fork in the engaged position. Now you use your 4x4 shift as normal for off road.
Nice! Thanks for the info.
Thanks for thanking the time to make this video. It was very helpful.
I still have the stock axle in my white Jeep jeep so yes this was helpful. Thank you!
Your welcome, sorry it took 2 years to say so.
Thanks for the video. What does the wire loom and plug do that are sticking out of the actuator? You pick it up at 2:50 into the video
helpful. Thanks. I'm guessing one vacuum hose engages 4WD and the other vacuum hose pulls the motor out of 4WD and frees up the axle.
It also turns the 4WD light on the dashboard.
Thanks for the info, good video
So did you have to change the axle shaft oil seals to fit the TJ drive shafts?
What year tj axle shafts will work on the yjs
The only problem with a one piece is the differential and driveshaft will turn all the time. Not so bad if you have the 4.0L but if you have the 2.5l it robs a lot of power.
Good point.
If one of the vacuum lines is to turn on 4x4 light on dash then what is the harness plug for?
Thanks helped me out
Glad to hear that.
Hey what you pay for tj shafts at pick a part? Thanks
I think around $100
My yj 2.5 ltr has 33s
This winter i put it in 4 wheel drive on a hill and the front tires were not spinning . Only rear was .
Than i put it on 2 L still nothing .so embarrasing .
Can anyone help me why the front wont move . Seems like 4x4 does engages and gets me out of parking lot and when lots of snow on ground but struggles on hills . Is it the big tires ? But in snow it should be easier to spin i guess.
My jeep even has lockers
There is a red dial up knob incab . I bought the jeep like this all modified
The red knob is not a dial up. It's a pull knob that's cable driven to the shift fork. When you engage your 4wd on the floor, you pull the red knob outwards. It's a manual cable that moves the shift fork to lock the two axles together. The vacuum lines are void. If you trace the black line from the red knob, you'll see that it runs to the shift fork housing cover. It runs into the housing and is connected to the shift fork internally. You will notice that, behind the red knob is possibly a black dial. When you pull the red knob outwards, you can dial the black knob clockwise to tighten up on the rod and lock it in place from working back inwards. It's much better than relying on vacuum to move the fork. Manual activation, over electrical, button, or vacuum is always my choice. If you pull on the knob and it won't move, check the black dial behind it and make sure it isn't tightened down on the shaft. Rotate it counter clockwise to free up the red button to pull. The black dial is basically to keep the red knob/shaft from working back in when it's pulled out. You may not need to use the black dial when the red button is outwards. You will figure that out after you use it. If your red button walks in when it's activated as you are four wheeling, then you'll know to just use the black dial to lock it in place. 😁
@@ArrowItArchery wow
Man you are a pro.👏
I end up selling the jeep 😂
I would like to know if the posi locker blocks the front wheels and does the function of a locked differential or what is the purpose there?
Good question. The posi lock does not lock the front differential. Only engages the passenger side axle shafts together.
New JL now using something similar no vacuum, electronic
I seen that. I'm guessing that will work better than the vacuum set up.
I never liked that set up in the XJ the vacuum fails just swap the Dana 30 to a solid it will be stronger
thank you