Noisy transfer box on 75 series land cruiser

HI
At 300,000kms and above anything is possible but difficult to diagnose over the internet. The history of the vehicle will give some idea of expected life span .
Suggest u take it to a g/box overhaul shop and have them test drive on and offroad .
Check also front and rear tailshaft splines ,universal joints diff centre pinion bearings . While your there check cv for noise ,wheel brg service last service, and swivel hub condition .
Sounds like the 75 needs a thorough inspection by somebody else .
If u want to ask a testing question and have a laugh, question your mechanic ask how he sets up the swivel hub bearings . Sorry had to mention this ha ha ha ..

cheers swampfox

Check out thread 117867, Rob. Might have some bearing (:-)) on your possible problem?

Bob

Rob.
You're lucky to get to get 320Ks up without problems, the transfer case on my 75 series had been rebuilt twice by the time I reached 320Ks. Initially I carried a slide on then towed an off road caravan, working quite hard off road. The clicking you hear is the transfer case telling you things are not all good.
My mate has a boat transfer business and uses a '94 Troopie, he has the transfer case done every 100,000 Ks as a precaution.
My mechanic advised me to use a transmission oil additive as well as changing the oil every 20Ks.

Rob.

Rob,

I have no idea where your mechanical skills are on a scale of 1 to 10. 10 being master mechanic with an honours degree in Toyota and 1 being....let's say, anything more complex than checking the oil and water is best left to someone else. If you tend to be closer to 1 than 10 maybe best you take the previous advice and take it to a trusted mechanic. That's assuming you can find one.
If you feel like getting a bit more up close and personal with your Troopy, you could try crawling underneath and dropping the oil out of the gearbox and transfer case. If nice clean non metallic oil comes out, you may be lucky. If enough internal parts come out with the oil it could give you a clue as to whether your upcoming trip should be postponed until further investigation.
Maybe a good time to also drop the oils out of the front and rear diff while you are at it if they haven't been changed for a while.
While you are under there, give the drive shafts a good shake to check for excessive play. Obviously things like wheel bearings should get a good looking at.

Cheers
Pop

Hi
I had a 1992 ,75 Troupcarrier with the same problem , only mine was noisy at 100,000 kms
I steered clear of change over boxes and transfer cases and had mine rebuilt , new main shaft new bearings and 3 new gears and syncros , and the seal kit that goes between the transfer case and the gear box , the oil runs out of the gear box and into the transfer case , you end up with low oil in the gear box and too much in the transfer case $900.00
Then found that the LSD was noisy as well , just couldn't hear it over the gear box noise .

Colin

My Troopie had a noisy bearing s in the T/case at 190,000 km. The average Mechanic (and there are a lot of them around) doesn't want to work on 4wd's as there are a lot of things that are different to a normal car and they dont want to know. I took mine to a specialist Gear and diff service. just a noisy bearing but a 'kit' was put thru it and all good If I cant do the work myself I only use a mechanics that specialise in 4wd's Eg. My son took his 80 series to an average mechanic to have the rear axle seals done, He over tightened the studs when replacing the axles, 3 weeks later.... Bang no drive to the back wheels. My son phoned me re the problem (I live 300km away) I knew immediately what he had done, and phoned the mechanic and told him a few things. My son took it back to him and he replaced the studs at no charge and checked the correct torque setting before proceeding...all good now with now further trouble. My son took my advise and now only uses a specialist 4wd mechanic

jeff

hi
Mechanics typically only get paid minimal earning around $30/hr would be a dream for most .Some dealers are only paying 20 something /hr
Pathetic wages
A 4wd is only a light truck or typical of vehicles from years ago .
This all used to be taught in your apprenticeship together with truck diesel ,aircon, applied electrics, driveline etc etc
A combination of laziness /lack of interest due to poor wages is the real culprit .

cheers swampfox

Rob,
as suggested above, if the noise is obvious then get it sorted. I have a 94 troopy and have no significant noise at 394K other than the general wine of the drive train. I certainly would not head off on a trip if the noise is worrying you. My experience with this vehicle is that the g/box and transfer is quite quiet for its age. I had a rear axle pinion seal go once in wet gritty conditions and it quickly let me know.

As said whilst generally these drive trains are reliable they need attention at the first sign of unusual noises. Leaving it only makes the problems worse and more to fix.