Thread: Transfer gears me think

rear diff has spat the cross pin and lunched itself, working the vehicle with no rear axle drive and the CDL locked has wound up against the bound up rear diff and is not disengaging.

If the front axle is cross locked (left to right) there is a chance that its already chewed its pin enough to be binding on the side gears or you've possibly twisted up an axle and locked a side gear to the carrier.

Why would the front axle spin freely then when I removed the drive shaft? Thats why I thought tc was gone because front diff was not turning with drive shaft in

Adam

if the shaft to the front diff is turning but it isnt driving youve either smashed the centre gears in the diff centre, or an axle, or a cv, or crown and or pinion, but in experience if found that once you have momentum, you can sometimes get away with damaged crown and pinion gears if you dont accelerate or engine brake to dramatically

Hi Adam

What we call steep down here in Tassie, those fellows over the other side would faint at the sight of!

Do a couple of checks for us and take some notes while you do.
First with the front and while the front prop shaft is off, jack up one wheel only and spin it a few times around going forward, then repeat in the opposite direction, while making sure the flange for the prop shaft is turning. Take note whether it feels like the turning wheel tightens or grabs, it should be feeling nice and smooth both directions.

Drop the tailshaft off at the handbrake and with the motor off, the gearbox and the transfer box in gear, the centre diff unlocked, spin the hand brake drum around, again taking note what the front output flange is doing, it should spin freely the opposite way to the hand brake drum and while turning the drum around, does it feel smooth or does it grab?

Now put the handbrake on and the transfer box in neutral, lock the centre diff and repeat your test, only this time you must turn the front output flange, feel again for any grabbing or tightening and take notes.

Not much point doing any tests on the back diff as it is fluffed.

Send me a PM if you want to have a yarn with me or if you need parts, as I know where you can get some from.
.

Originally Posted by agrojnr

Why would the front axle spin freely then when I removed the drive shaft? Thats why I thought tc was gone because front diff was not turning with drive shaft in

Adam

in your configuration with the rear diff shot it may be loading up the TCase and its diff is not disengaging.

When you remove the front prop shaft theres nothing to stop the front diff from turning so it turns again.

in theory if you havent damaged anything in the front diff you should be able to get self mobile by removing the rear halfshafts, removing the rear prop and driving on the front axle with the CDL locked in.

I don't reply to posts, usually, for fear of getting things wrong...
At the bottom of the original post, it says drive-line is:
"LT77 with bw tc" - that means a borg warner viscus coupling + chain drive - no centre diff lock (cdl).
Does this change some of the checks to be made?
Michael

Originally Posted by LR4WD

I don't reply to posts, usually, for fear of getting things wrong...
At the bottom of the original post, it says drive-line is:
"LT77 with bw tc" - that means a borg warner viscus coupling + chain drive - no centre diff lock (cdl).
Does this change some of the checks to be made?
Michael

thats also confusing me. if it does have cdl which it sounds like it by looking at the first post. it must be a lt230?

cheers, andy

My bad its lt77 with 230th

Adam