binding drivetrain????

[Riv39 Advanced Member Find all posts View Profile Close Riv39]

Re: binding drivetrain????

Thank you people you have answered my problem . I have noticed the exact same problem I thought it was my imagination .It only seems to occur when coming to a stop on a bit of an incline .First I thought it was my brakes but that proved to be false then the suspension also false then the transmission false .What I don't understand if Toyota have known of this and the same for the 150 mudflaps why haven't they fixed it .I fixed the flap issue by putting extensions front and rear and also before the runners no more dirty jeans Cheers Foxy :wink:

I was told that Toyota 'thought' it was fixed with the 150 series......alas we know that it is not. It would seem that the drive train setup is identical to the 120 (and the 200 series Landcruiser apparently which also suffers from this issue).

[Bazza Senior Member Find all posts View Profile Close Bazza]

Re: binding drivetrain????

I had the same cluck-thud tailshaft problem on my 09 120 from new. At the 10,000k service they said grease would fix it, at the 20,000k service they said grease would fix, at the 30,000k service I told them that I would not be picking the the Prado until the tailshaft was replaced. How did I now that they replaced it ... I put an identifing mark on it after the 30,000 service. Since then... no more noises.
I do'nt know how true this is, but I was told later by a Toyota tech that the replacement shafts are shorted, allowing the shaft to move forward and backwards without contacting the diff or box.
Bazza.

[gxllouie Member Find all posts View Profile Close gxllouie]

Re: binding drivetrain????

toyota regreased mine today. i was told that all toyota 4wd's have this problem. the service guy even said his 100 series does it, particularly when he takes it through water or on the beach, cause the grease gets flushed out. i figure i'll get them to regrease every service for the next 6 years while it's under warranty.

and bazza, how many k's and what kind of driving have you done on the new tailshaft?

i'm not doubting your explanation of the replacement shaft working one bit, but you would think if they have fixed the problem, the 150 would have come with the replacement shaft as standard??

cheers,
louie

[LaoK User account deleted at own request. Find all posts View Profile Close LaoK]

Re: binding drivetrain????

Happens to mine occasionally. Feels like somebody has given you a nudge from behind. I thought it was axle wind-up but I think that it is the automatic transmission box. I often put the beast in neutral to stop the diesel pushing against my braking pressure and creeping me up to the car in front.

[Riv39 Advanced Member Find all posts View Profile Close Riv39]

Re: binding drivetrain????

Happens to mine occasionally. Feels like somebody has given you a nudge from behind. I thought it was axle wind-up but I think that it is the automatic transmission box. I often put the beast in neutral to stop the diesel pushing against my braking pressure and creeping me up to the car in front.

If you put it in N when you stop it won't do it as you have taken the strain off the splines and allowed the shaft to move normally. My guess is that the tolerances are so fine that it is difficult to get enough grease into the splines to do the job properly, thus it requires 'heaps' of grease (and pressure) to force it into where it needs to be.

[cookymonsta Junior Member Find all posts View Profile Close cookymonsta]

Re: binding drivetrain????

I get that every now and again. Sometimes when slowing down and sometimes after stopping. Sometimes at highway speed coming off gas .

[gxl_d4d Advanced Member Find all posts View Profile Close gxl_d4d]

Re: binding drivetrain????

Like most 120 owners, I had this problem on mine. It would go away after greasing the shaft. However, after one offroad trip, no matter how much grease I pumped in the thumping kept reoccuring. In the end, I had the tail shaft removed, all of the old greased cleaned out with solvent, regreased and refitted. I still get the thumping usually around the 6000km after the dealer service or after driving through water. Giving it 5 shots of grease solves the problem.

[rodll Lurker Find all posts View Profile Close rodll]

Re: binding drivetrain????

My thump/clunk is when it changes down 3-2nd around a particularly tight uphill corner on the way to work. Sounds like the transmission is about to fall out! Can't reproduce it on any other corner/hill/sitn, so can't demonstrate it to service manager. Any suggestions?

[Riv39 Advanced Member Find all posts View Profile Close Riv39]

Re: binding drivetrain????

My thump/clunk is when it changes down 3-2nd around a particularly tight uphill corner on the way to work. Sounds like the transmission is about to fall out! Can't reproduce it on any other corner/hill/sitn, so can't demonstrate it to service manager. Any suggestions?

Sounds like a different issue from what you describe, more like a tranny problem if anything.

[LeighW Avid PP Poster! Find all posts View Profile Close LeighW]

Re: binding drivetrain????

I have this issue occassionally with my Kia Sportage. I think the issue is on
slow deceleration and stopping. The auto changes down to second but does not
go into first as if it did you would get a jerk due to engine revs suddenly increasing.

If your then sitting there with the engine idling and the aircon for instance turns
off the engine revs increase slightly and the gear box sees this as if your going to take
off and shifts to first. Same thing happens when you accelerate off.

If you have any tail shaft play or excessive diff back lash the affect will be more pronounced
as the tail shaft will load up one way on deceleration and then when you take off the shaft spins back
the reverse direction and the play causes the thump.

Cheers
LeighW

[Riv39 Advanced Member Find all posts View Profile Close Riv39]

Re: binding drivetrain????

This problem started in the 200 series. It would seem that all newer Toyota 4wds are starting to have the problem. It is the sort of noise you don't like to hear coming from your tail shaft (rear driveline). I have had a look at this on a 200 series and it would seem to be the rear shaft spline is getting jammed in the sleeve yoke and then releasing quickly, hence the noise. I tried a number of different lubricants (grease) in there with different degrees of success, but the problem always comes back. Messy job too, because you have to clean the yoke and the drive shaft spline before you put the different grease in there. My opinion is that this is an engineering problem that Toyota needs to look at, there is definately something not right with the design and/or how it has been manufactured. Toyota Australia's fix to date, nothing as yet. I wonder where the shaft assemblies are being manufactured, hopefully not China. If they are, then that maybe the problem and explains why it is a hit and miss affair when it comes to not all vehicles having the 'tailshaft snap problem' as it has become known in the industry. Answer to the problem, keep the pressure up on the dealership that you purchased the vehicle from as my mate is doing after we spent a day on the problem.
The Roo.

Hey Roo, I've been back to my dealer no less than 3 times in approx 10,000km (actually started at 5,000km) + twice to remove excees grease spraying everywhere underneath. The last regrease is still working at almost 14,000km (a record as it normall only lasts 3,000km at best). They reckon it eventually 'wheres in', go figure that one. I know some guys on the forum have had success having there shaft replaced on their 150 but my dealer told me that Toyota Aus no longer agrees to this fix (as they once did for the 120 series). I agree that it is a design issue be it tolerance or the inability for the slip joint to lubricate itself effectively.

[wooley Avid PP Poster! Find all posts View Profile Close wooley]

so... I just got back from my dealer who has claimed that Toyota has just (this week) released a fix for the drive train clunk in the 150.

Instead of telling them to just pack it with grease as they have done in the past. Toyota has now released an updated drive shaft.

He mentioned a diamond coating... sparkly.

None in the country at the moment, but should be some in 5 or so weeks.

[Riv39 Advanced Member Find all posts View Profile Close Riv39]

Yeah I got the same story, if my problem returned they would order the new shaft. To be honest mine has benn fine for over 10k now.

I've got to admit that my dealer is on the ball with these updates...good to see!

[vk2ss55 Senior Member Find all posts View Profile Close vk2ss55]

Guys I'm told that they use a special grease high in copper to fix the tailshaft clunk . Does anyone know the grease type please ?
Cheers
Ross

[wooley Avid PP Poster! Find all posts View Profile Close wooley]

Guys I'm told that they use a special grease high in copper to fix the tailshaft clunk . Does anyone know the grease type please ?
Cheers
Ross

That was Toyotas original fix, just pack it with grease, was the same on the 200 and 70 series. The new fix is to replace the tailshaft. The Grease they use is Caltex EP2.