Trailblazer 4WD front axle disconnect inside view of activation

  Рет қаралды 6,619

Thomas J Baker

Thomas J Baker

Күн бұрын

Пікірлер: 21
@James_WTFox
@James_WTFox 2 жыл бұрын
I’m sure you didn’t think this would ever be applied to a 4wd twin turbo dragcar mustang lmao. But this is exactly what I needed to see. I’m going to weld the front diff but need to retain the disconnect to turn the car still.
@jalton9416
@jalton9416 2 жыл бұрын
Good demonstration of how it works. I just finished replacing one on my daughter's boyfriend's trailblazer.
@macknumber9
@macknumber9 7 ай бұрын
So the inner gear is permanently connected to the intermediate shaft splines and the outter gear is permanently attached to the cv shaft...these do not move...what moves is the collar sleeve...the collar sleeve moves forward so it is connected to both the inner and outer gears allowing the axle to then be connected? Is this correct?
@thomasjbaker7688
@thomasjbaker7688 7 ай бұрын
Pretty much, yes. Each gear is splined to a shaft, either the intermediate shaft or the CV axle shaft. Each gear has teeth on the outside diameters and these teeth get coupled together by the collar that is moved by the shift fork driven by the actuator. The actuator (at least an original one) has a coil spring inside so if the external teeth of the gears are not aligned and the shift collar cannot easily slide over the mismatched gears then the coil spring of the actuator compresses allowing the actuator to go full travel. When there is a little movement of either of the 2 gears and the teeth move into alignment the coil spring will move the shift fork and collar coupling the gears together.
@paultomlinson2695
@paultomlinson2695 3 жыл бұрын
So cool 🙂
@captain150
@captain150 2 ай бұрын
So I can see how this disconnects the front passenger wheel, how is the driver's side CV disconnected from the differential? Or is it not?
@thomasjbaker7688
@thomasjbaker7688 Ай бұрын
The drivers (left) side wheel is connected by a CV shaft from wheel to the left "side gear" in the front differential. Opposite that in the front differential is the right "side gear". The right "side gear" is splined to the "intermediate shaft" which runs through a passage in the oil pan. The two "side gears" have two "spider gears" coupling them together. The relationship of this set of gears is best seen in video demostrations of how a differential works. The "imtermediate shaft" exits the right side of the oil pan and enters the disconnect where it is splined to another gear which is seen in this video. It's the gear seen lowest in the video, the gear that I placed the other gear on top of.
@thomasjbaker7688
@thomasjbaker7688 Ай бұрын
So the drivers side (left) wheel is always connected to the differential. Decoupling the right side wheel/axle from the intermediate shaft allows for the intermediate shaft to actually spin 'backwards' as you drive down the road in 2 wheel drive. Allowing the intermediate shaft and related gears and front propshaft (driveshaft) to sort of freewheel a can help a little with fuel economy.
@IkeCoblentz
@IkeCoblentz Жыл бұрын
Hi I'm looking at this on mine. If I can spin one front tire and the other does not spin could it be this box? I can push in to engage with my finger but it doesn't connect to the other wheel.
@thomasjbaker7688
@thomasjbaker7688 Жыл бұрын
You might need to push in where the actuator pushes in, using something like a long screwdriver, and slowly turn the passenger wheel at the same time so the two gears get lined up. If you can push all the way in where the actuator pushes, and spin the front passenger wheel, with neither the drivers side wheel nor the front propshaft (between the transfer case and front differential) turns then it is possible that this disconnect has something broken inside. But it could also be something broken on the front differentail.
@IkeCoblentz
@IkeCoblentz Жыл бұрын
@@thomasjbaker7688 Thanks for responding! I took that disconnect off and opened it and it's fine. I guessing it's the diff that's messed up but it's new it was replaced last month. But the transfer case and front driveshaft lock up so It almost has to be the diff
@thomasjbaker7688
@thomasjbaker7688 Жыл бұрын
@@IkeCoblentz Maybe drain the front differential fluid and check for metals? Are all the splines OK on the CV shafts and intermediate shaft?
@IkeCoblentz
@IkeCoblentz Жыл бұрын
@@thomasjbaker7688 Yes the splines look fine. Ok I'll look for metal
@arthurjohnson5321
@arthurjohnson5321 3 жыл бұрын
The video was good does anybody know where you can get inside and outside replacement seals for the damn thing
@kennygee2715
@kennygee2715 Жыл бұрын
rock auto.
@Lifegoeson-nv9jv
@Lifegoeson-nv9jv Жыл бұрын
Not bad to replace them.. make sure grease them...
@MrDeathlik
@MrDeathlik 2 жыл бұрын
How work transfer case encoder motor, how to set the correct position? what resistance should the TCCM see in 2HI mode? Thank you
@thomasjbaker7688
@thomasjbaker7688 2 жыл бұрын
The encoder sensor is a voltage divider circuit. The TCCM supplies 5 volts across the senaor and the voltage seen at the sensor signal wire is what the TCCM needs to see. At this link you can find the voltages for each position as well as the position for the motor/sensor. gmtnation.com/forums/threads/transfer-case-bench-testing-np226.21830/post-611951
@innovativeintelligence4172
@innovativeintelligence4172 2 жыл бұрын
So what pins do I have to hit to get it to retract? Mine seems to have a problem retracting, I can get it to extend fine.
@thomasjbaker7688
@thomasjbaker7688 2 жыл бұрын
The actuator is powered by the brown wire at terminal D and a black ground wire at terminal B. The actuator control wire is the blue wire at terminal A. When that is grounded the actuator should extend. When that blue wire is not grounded the actuator should retract. If it does not retract then check that the blue wire is not worn somewhere and grounding out.
@Cornell28
@Cornell28 3 жыл бұрын
That's sweet
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