Topic: TJ conundrum (Read 9689 times)

willo · « **on:** February 11, 2012, 05:56:56 PM »

So, my Dana 30 has finally had the new R&P fitted on the ARB RD100 and I am happy with the installation, after chatting to ARB USA.
We took it for a test drive, and in 2wd its fine, however in 4wd on right hand lock, something is binding, causing the car to stop, though I can drive it forwards, it feels not dissimilar to when I stripped the teeth last time. It. feels to me like its the RHS wheel/shaft binding, and I don't want to force it forwards as I expect the R&P will fail again

We returned to the garage and put the jeep on the hawkeye and got the wheels off the deck, I put it in 4wd and dropped the clutch, and tried the wheels left to right lock and no binding, so next I tried putting the drive train under load by putting the brakes on, and again, no binding. we also tried it with lockers in, and lockers out, and still no binding.

Its a bit like its got a different R&P in it, but I'm sure its a 456, the same as the rear, so, has anyone got any ideas what the hell is going on?

George, my technician chap has also had the stethoscope out, and says that the front diff is nearly completely silent, and is happy with it

isle of man · « **Reply #1 on:** February 11, 2012, 06:08:52 PM »

The R&P is wrong for sure - did you count the teeth? I have seen this happen some time go.

isle of man · « **Reply #2 on:** February 11, 2012, 06:11:19 PM »

Thinking about this - the mud guys do this to make the front spin faster than the rear - completely irrelevant but wanted to share.

willo · « **Reply #3 on:** February 11, 2012, 06:18:42 PM »

Quote from: isle of man on February 11, 2012, 06:08:52 PM

The R&P is wrong for sure - did you count the teeth? I have seen this happen some time go.

No, I didn't count the teeth, was relying on the stamp(4.56 I think/hope)on the side of the Ring. It is a alloy usa unit, the same as the last 2, D30 4.56R

The binding only occurs on RH lock, ,

The stethoscope also said that the TC is making lots of banging sounds, and the back of the case is moving around quite a bit

would a buggered TC make this happen? bearing in mind I shoved the RHS of the axle back about a foot when I snapped off the lower control arm mount

is there a central diff in the TC? could that be buggered, George also noted that the front prop is slightly banana'd

On monday, they are gonna chalk the tyres and leave it running for a bit, see if the R&P's are wrong....

Might be time to order up that clocking ring for the D300....

isle of man · « **Reply #4 on:** February 11, 2012, 06:21:57 PM »

Try it without the front prop attached and report back.....

willo · « **Reply #5 on:** February 11, 2012, 06:29:02 PM »

Quote from: isle of man on February 11, 2012, 06:21:57 PM

Try it without the front prop attached and report back.....

It is fine in 2WD, and everything is still turning as I haven't got locking hubs

isle of man · « **Reply #6 on:** February 11, 2012, 06:37:58 PM »

So it's in the front axle then.

If I said you have won the euro lottery would you belive me?? I think not - always double check!!!

wildwood · « **Reply #7 on:** February 11, 2012, 06:43:10 PM »

prop wont help.....................

isle of man · « **Reply #8 on:** February 11, 2012, 06:48:40 PM »

Quote from: wildwood on February 11, 2012, 06:43:10 PM

prop wont help.....................

Indeed we have established that - you on the claret this night?

wildwood · « **Reply #9 on:** February 11, 2012, 06:49:47 PM »

Pope? catholic???

a cheeky little Australian shiraz................ chateau Wagga Wagga. really opens the sluices at both ends

isle of man · « **Reply #10 on:** February 11, 2012, 06:53:32 PM »

Porto is calling!!!

MOCAJ · « **Reply #11 on:** February 11, 2012, 06:56:59 PM »

front prop bananered, take it off and see

willo · « **Reply #12 on:** February 11, 2012, 06:57:39 PM »

Quote from: isle of man on February 11, 2012, 06:37:58 PM

So it's in the front axle then.

If I said you have won the euro lottery would you belive me?? I think not - always double check!!!

ok, i will ask them as i'm not on the island monday......

how many teeth should i have for 4.56?

isle of man · « **Reply #13 on:** February 11, 2012, 07:01:07 PM »

Quote from: my other cars a jeep on February 11, 2012, 06:56:59 PM

front prop bananered, take it off and see

Steve - that would only indicate bad vibration or transfer box problem.

Bubba · « **Reply #14 on:** February 11, 2012, 07:03:12 PM »

look on randys ring and pinion there is a chart

MOCAJ · « **Reply #15 on:** February 11, 2012, 07:05:30 PM »

this is what makes me think prop

George also noted that the front prop is slightly banana'd

and with bubba on randys

willo · « **Reply #16 on:** February 11, 2012, 07:09:41 PM »

Quote from: V8 Bubba on February 11, 2012, 07:03:12 PM

look on randys ring and pinion there is a chart

Thanks

what is the mileage on the thought train that maybe the bumpstops aren't wound out enough and the CV's are binding, stopping the diff? however it happens in 4wd only, doesn't matter in high or low or lockers in or out, and only on full RH lock on the road. Driving in 4wd on the road is fine......

But nothing has changed and it all used to be ok before I shoved the axle back

JamesH · « **Reply #17 on:** February 11, 2012, 07:18:14 PM »

Bent axle tube or deformed housing? I don't even kknow if these would cause the problems you have or would have shown up with the tests already completed but your previous damage could have caused either.

isle of man · « **Reply #18 on:** February 11, 2012, 07:19:40 PM »

It's not the shafts (the turning right is a moody) it's the diff not sure what yet but the problem is defiantly diff related.

isle of man · « **Reply #19 on:** February 11, 2012, 07:23:16 PM »

Quote from: JamesH on February 11, 2012, 07:18:14 PM

Bent axle tube or deformed housing? I don't even kknow if these would cause the problems you have or would have shown up with the tests already completed but your previous damage could have caused either.

Hard core that but possible.

I have torn a front axle from a TJ and only one lower arm was still attached - never bent the front tubes though!!

scrw · « **Reply #20 on:** February 11, 2012, 07:26:16 PM »

Quote from: Willo on February 11, 2012, 07:09:41 PM

Driving in 4wd on the road is fine......

won't be a ratio miss match then, if it was the jeep would sway like fuck and you get tyre scrub (I know been there)

Are you sure the knuckle is all okay and the driveshafts are all straight? Is the UJ/CV centred on the knuckle joint okay?

willo · « **Reply #21 on:** February 11, 2012, 07:27:35 PM »

Quote from: JamesH on February 11, 2012, 07:18:14 PM

Bent axle tube or deformed housing? I don't even kknow if these would cause the problems you have or would have shown up with the tests already completed but your previous damage could have caused either.

the longside tube got twisted forward at the time of the control arm ripping off, it has since been twisted back and welded up round the socket

Mike Pavelin · « **Reply #22 on:** February 11, 2012, 07:28:05 PM »

Quote from: Willo on February 11, 2012, 06:29:02 PM

Quote from: isle of man on February 11, 2012, 06:21:57 PM
Try it without the front prop attached and report back.....

It is fine in 2WD, and everything is still turning as I haven't got locking hubs

Erm. Don't you have a 231 transfer case on a TJ? Of course it will bind in 4wD, it has no centre diff.

willo · « **Reply #23 on:** February 11, 2012, 07:31:36 PM »

Quote from: scrw on February 11, 2012, 07:26:16 PM

Quote from: Willo on February 11, 2012, 07:09:41 PM
Driving in 4wd on the road is fine......

won't be a ratio miss match then, if it was the jeep would sway like fuck and you get tyre scrub (I know been there)

Are you sure the knuckle is all okay and the driveshafts are all straight? Is the UJ/CV centred on the knuckle joint okay?

what is tyre scrub?

Bubba · « **Reply #24 on:** February 11, 2012, 07:32:13 PM »

assuming the arb disconnects properly are you certain there is no tyre diameter problem

is it pos for the arb to be partly stuck so as to efectivly be locked to one side as the locker normally locks both shafts together i cant help wonder if it unlocks properly

Author Topic: TJ conundrum (Read 9689 times)

scrw

Mike Pavelin