Kal07

In park reverse neutral or drive?

CrazyWJ242

You really need two people to test varilock axles, basically you have to build up the pressures in both the tranfercase as well as in each axle. first test the axle, then test the transfercase.

first thing get it all warmed up, take some tight turns for about 2 minutes
jack up the axle, spin the tires in opposite directions, it should build up pressure and you shouldn't be able to freely spin the other tire backwards, both wheels should spin in the same direction at the same rate... as soon as you stop spinning, the pressure should drop and the tire should spin in the opposite direction again freely...

then test the other axle

one thing to remember about the Quadra Drive is 100% of the power can be sent to any 1 wheel! it can also be at any rate aswell...

and the front driveshaft is what actually primes up the transfercase in the 247, the rear driveshaft is whats connected to the case for sending the output to either axle...

tricky system it is, when its operating flawlessly you dont notice it... testing it is a nightmare...

Kal07

Nothing at all happens. Do u think the installed
The wrong axel? The thing that's driving me nuts is
It worked before I took it to ct and then stopped
The second I picked it up

oldfart

That's what it sounds like to me.

Kal07

So would the select trac axle fit in the Quadra drive? And
Cause it to stop working?

CrazyWJ242

the axle/ CV is pretty much the same for the axles, the difference is all in the differential.

If they drained the fluid and didn't add a limited slip additive to the oil they could have burnt up the coupling in the axle... adding the additive may bring it to life, but most times it ended up cooked and that would send the whole system haywire...

Kal07

Ok so today in Calgary AB it was -28 deg C. With windchill so anyways
I went out and it worked perfect. But after about 30 min of it being warmed up
it seemed like it Was slipping. Really weird. But ya anyone know
If it could just be the oil? And if so how do I change it? And how much
Does the oil cost

ruggedscotsman

Ok...sounds like it couple be a number of things.

First off, Quadradrive works by sending all the power to the rear wheels until there is a difference between the rate at which the front and rear wheels are spinning. Then it progressively sends more torque to the front via the progressive coupler, until both axles return to the same rate. When the progressive coupler fails in a 247 transfer case, it defaults to rear wheel drive only unless you shift into 4Lo. If the fluid in the case is low / old / or the wrong stuff, it can cause the case to act up or fail...so you could try getting some Mopar 247 transfer case lube (dealership only) and that may fix the problem. There are two holes in the back of the tc which take an allen head. Top one is for filling, bottom for draining. Remove the top one first to ensure you can fill the case back up once drained. When filled, the fluid should be level with the filling hole when parked on level ground.

However, you said only one of the front wheels would turn during testing. Quadradrive and Quadratrac models have different length axle shafts because of the varilock differentials in QD models. Also as stated above, Varilock diffs need a friction modifier added when changing the gear lube. The gear lube is cheap, but the friction modifier suggested is a dealer only product. (some folks have good luck with products like royal purple that have the fm already mixed...) I use standard 75W-140 weight gear oil front and back, with 2.5 oz of Mopar Friction Modifier in the front and 4 oz in the back ...IIRC. Its easy enough to change yourself, just a slightly messy job.

Check out http://www.wjjeeps.com/service/maintenance_wj.htm#TCASE for lots more tech info..

Kal07

Ok so I guess it's not working at all. Today what I
Did was a tire rotation maybe that wpuld help it didn't. I couldn't
Just lift up the front end I will tpday but when u lifted on side
The right and it was in park I could freely spin the tire
It felt like a little pull kind of thing but still very easy to spin the tire
I'll change the transfer case oil today or tomorrow how much does it cost?
For just the oil, hpw can I test the system. What I do is in the back alley
It's icy I just get my dad to stand out of the car I put it in 4lo and pin it all that happens
Is the rear spins fast and the front doesn't at all. It just sucks cuz after
Crappy tire touched it the system stopped working and they won't
Touch it anymore or help me put after I spend 500$ there anaywyad all the replys
Are helping so thank u very much meand alot cuz my baby boy rides with me and the wife

ruggedscotsman

First off, I've never had anything but negative experience with the service departments at Canadian Tire. Not saying they are all bad, but I think you'll be much better off with a different automotive service shop.

You said you were in 4Lo and the front wheels would not turn? That makes me think either its not in 4Lo, or something is seriouly broken (front axle shaft, front drive shaft, or the tc) To shift into 4Lo, let the jeep roll at <5 kph, shift the tranny into N, shift the tc from 4alltime right to 4Lo, then shift the tranny back into D.

Do you hear strange noises when testing? grinding? Does it make a clunk when shifting into 4Lo? Do you notice an increased draw on the engine and higher rpm's in 4Lo?