Topic: TJ conundrum (Read 16695 times)

willo · « **Reply #25 on:** February 11, 2012, 07:34:06 PM »

Quote from: Mike Pavelin 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.

but bind to the point of ripping teeth off the r and p?

it never used to bind like this....

isle of man · « **Reply #26 on:** February 11, 2012, 07:34:59 PM »

Quote from: Willo on February 11, 2012, 07:31:36 PM

what is tyre scrub?

It's when the opposing tyre does not agree.

willo · « **Reply #27 on:** February 11, 2012, 07:41:59 PM »

Quote from: V8 Bubba 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

this happened both on the 11.50's and the 12.50's, i have always run these sizes and never had a problem before...

2nd point hmmmmm

Bubba · « **Reply #28 on:** February 11, 2012, 07:44:26 PM »

so i am thinking on a ramp with the front wheels in the air engine off but in 4wd with locker out if you turn the front wheels they will rotate in oposit direction as the diff and prop can not turn so the spider gears rotate in stead but if one will not rotate the locker could be stuck partialy in locking the wheel to the drive train and hence the binding and ripping of teeth

if tube was bent the shaft at inbord end may have gouged slightly the coller the disengages the locker and may give some kind of sticking point

bigjeepzj · « **Reply #29 on:** February 11, 2012, 07:46:27 PM »

Get tyre scrob when in 4WD ,ARB open and full lock.
Got 4.56 R&P D30 33" 10.5s
Did you test on tarmac ?? not non trying to as dumb questions

willo · « **Reply #30 on:** February 11, 2012, 07:50:42 PM »

Quote from: V8 Bubba on February 11, 2012, 07:44:26 PM

so i am thinking on a ramp with the front wheels in the air engine off but in 4wd with locker out if you turn the front wheels they will rotate in oposit direction as the diff and prop can not turn so the spider gears rotate in stead but if one will not rotate the locker could be stuck partialy in locking the wheel to the drive train and hence the binding and ripping of teeth

pretty happy with the locker, fairly sure it unlocks ok, as wheels spin in opposite directions when turned, haven;t tried that test in 4wd though

MOCAJ · « **Reply #31 on:** February 11, 2012, 07:51:51 PM »

think we need to go back to what it happpened when it broke

you say axle moved back, fucked your ring and pinion so

axle perches welded back in a straight line ?

then have you checked axle shafts for trueness, in particular the long side drivers one , if prop is bent that will have an effect as it will push on the bearings and bind stuff up.

This aint happened on the road so need to think why its fooked

willo · « **Reply #32 on:** February 11, 2012, 07:53:51 PM »

Quote from: bigjeepzj on February 11, 2012, 07:46:27 PM

Get tyre scrob when in 4WD ,ARB open and full lock.
Got 4.56 R&P D30 33" 10.5s
Did you test on tarmac ?? not non trying to as dumb questions

yes todays tests were on tarmac, I realise I may suffer from wind up, BUT it never did this before, I have driven the jeep a fair amount in 4wd on the road before and I have never encountered these problems.

From memory this binding still occurs on soft ground anyhow

willo · « **Reply #33 on:** February 11, 2012, 07:57:46 PM »

another thing we have noticed is that the front prop is too long at full droop, as my short arm pulls the axle back.

I have a spare front prop, with buggered uj's perhaps a go with that might help/be a way forwards

normalbloke · « **Reply #34 on:** February 11, 2012, 08:00:33 PM »

I'm surprised you're still sane and haven't flogged it yet!!

MOCAJ · « **Reply #35 on:** February 11, 2012, 08:01:16 PM »

take it off, go for a drive then if ok put your spare on, worth an hours spannering

isle of man · « **Reply #36 on:** February 11, 2012, 08:02:25 PM »

Quote from: Willo on February 11, 2012, 07:57:46 PM

another thing we have noticed is that the front prop is too long at full droop, as my short arm pulls the axle back.

I have a spare front prop, with buggered uj's perhaps a go with that might help/be a way forwards

It's highly unlikely to be the front prop!!!

willo · « **Reply #37 on:** February 11, 2012, 08:04:34 PM »

Quote from: normalbloke on February 11, 2012, 08:00:33 PM

I'm surprised you're still sane and haven't flogged it yet!!

i actually love it, and quite enjoy the challenge of upgrading it all. just a bit of a mute point at the moment

Bubba · « **Reply #38 on:** February 11, 2012, 08:18:31 PM »

[/quote]

pretty happy with the locker, fairly sure it unlocks ok, as wheels spin in opposite directions when turned, haven;t tried that test in 4wd though
[/quote]

try it in 4wd the way you did it did not realy show that it was totaly free i bet the prop was turning too if the prop is locked you then force the diff to go through its differential action

willo · « **Reply #39 on:** February 11, 2012, 08:20:44 PM »

Quote from: V8 Bubba on February 11, 2012, 08:18:31 PM

pretty happy with the locker, fairly sure it unlocks ok, as wheels spin in opposite directions when turned, haven;t tried that test in 4wd though
[/quote]

try it in 4wd the way you did it did not realy show that it was totaly free i bet the prop was turning too if the prop is locked you then force the diff to go through its differential action
[/quote]

engine off, in 4wd and in gear, yes?

Bubba · « **Reply #40 on:** February 11, 2012, 08:28:12 PM »

Bubba · « **Reply #41 on:** February 11, 2012, 08:29:55 PM »

if my foggy thinking is correct one wheel will be solid as it still connected to the crown wheel and prop shaft

willo · « **Reply #42 on:** February 11, 2012, 08:37:47 PM »

Quote from: V8 Bubba on February 11, 2012, 08:29:55 PM

if my foggy thinking is correct one wheel will be solid as it still connected to the crown wheel and prop shaft

[attachment=1]

Bubba · « **Reply #43 on:** February 11, 2012, 08:46:45 PM »

and has the arb been fully apart ?

willo · « **Reply #44 on:** February 11, 2012, 08:48:21 PM »

Quote from: V8 Bubba on February 11, 2012, 08:46:45 PM

and has the arb been fully apart ?

nope, not that I am aware of

Bubba · « **Reply #45 on:** February 11, 2012, 08:56:07 PM »

try the wheels in the air thing in gear and 4wd and report findings my gut says its arb related

Warthog · « **Reply #46 on:** February 11, 2012, 10:56:01 PM »

Methinks, Damaged/seized front drive shaft UJ?

The wieght of the vehicle could compound the level of siezure.

Or maybe a Caliper faailure? Common for TJ calipers to stick and bugger up?

Weak return springs in the ARB?

willo · « **Reply #47 on:** February 11, 2012, 11:10:41 PM »

Quote from: Warthog on February 11, 2012, 10:56:01 PM

Methinks, Damaged/seized front drive shaft UJ?

The wieght of the vehicle could compound the level of siezure.

Or maybe a Caliper faailure? Common for TJ calipers to stick and bugger up?

Weak return springs in the ARB?

by drive shaft do you mean half shafts? if so mine are cv type, so unlikely

its not a caliper issue, its fine in straight ahead, and no smell

maybe some mileage in ARB.......we shall see

but all good ideas, thanks

Dave69 · « **Reply #48 on:** February 12, 2012, 03:49:17 PM »

does the right wheel catch on the bodywork stopping you from moving ?

Warthog · « **Reply #49 on:** February 12, 2012, 09:26:58 PM »

Quote from: Willo on February 11, 2012, 11:10:41 PM

by drive shaft do you mean half shafts? if so mine are cv type, so unlikely

Why do you say unlikely? Are they stock 1993-1998 Grand Cherokee CV joint shaft or uprated daddy's

Didnt realise you were running CV type. With the tyre size your running and assuming they are stock, Then i would have a good look at them, as the symptom sound familiar to CV failure.

Stock CV's joints really dont like being driven hard locked, with large tyres and BHP at their max angles. Most lardie boys go through stock CV's quickly

Author Topic: TJ conundrum (Read 16695 times)

normalbloke