80 Series drivetrain chatter

Submitted: Friday, May 27, 2005 at 13:52
ThreadID: 23354 Views:3732 Replies:10 FollowUps:5
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I have an 1991 80 series Land Cruiser diesel with 250,000km. At low revs the drivetrain seems to chatter loudly and has done so since I bought it at 200,000km. If you drive slowly just labouring it slightly it chatters loudly and is very loud from the outside. I have managed to drive around this most of the time keeping the revs up but when I am 4wding just idling around in the bush it is very annoying. Can anyone shed any light on the problem. A lot of cruisers I have heard about the place do this and I have also heard some older patrols doing it too. Could it be the clutch or the gearbox ageing? I have taken it to mechanics and most have said that it is just the go of the beast. Thanks. Spacko
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Reply By: Member - Jeff M (WA) - Friday, May 27, 2005 at 14:01

Friday, May 27, 2005 at 14:01
Spacko, my first thought would be a Uni Joint in the drivetrain. Might need some grease down there bro. Either that or it's just plain rooted.

Is it constant 4wd?
AnswerID: 113173

Reply By: Coops (Kalgoorlie) - Friday, May 27, 2005 at 14:51

Friday, May 27, 2005 at 14:51
mine's done that ever since I've owned it (85K's) and has now done over 220K so I don't think it's an issue other than the racket it makes
AnswerID: 113182

Reply By: Footloose - Friday, May 27, 2005 at 17:33

Friday, May 27, 2005 at 17:33
Have you had the tappets adjusted ? Clutch noise ? Throw out bearing get noisy if clutch pedal pressed in AFAIK.
AnswerID: 113204

Reply By: Member - Jack - Friday, May 27, 2005 at 17:59

Friday, May 27, 2005 at 17:59
I got mine at 166k and it did it and has continued to ... with no ill effects.

As I often say ... just keep driving and if something gives way you at least know where to look ... : )

The hurrieder I go, the behinder I get. (Lewis Carroll-Alice In Wonderland)

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AnswerID: 113212

Follow Up By: Member - Jeff M (WA) - Saturday, May 28, 2005 at 20:34

Saturday, May 28, 2005 at 20:34
Yeah but it's not such a good theory if your in the middle of the bush with a young family IMHO.

Missus thing I'm nuts searching for all those funny noises when they crop up. I always say even if it is only a squeaky fan belt at least I know it's not the timming belt tensioner bearing!
FollowupID: 369504

Reply By: udm - Friday, May 27, 2005 at 18:43

Friday, May 27, 2005 at 18:43
We´ve got 2 of them, and 1 does that sound, (I am not actually worried about it, I can live with that) looks like it comes from the transfer case, who knows, as everybody says, just keep going.

AnswerID: 113224

Reply By: locallaw - Friday, May 27, 2005 at 19:50

Friday, May 27, 2005 at 19:50
Gidday,I own a 1994 80 series GXL diesel that had a severe rattle from the box.The clutch had a shudder when moving from a standstill and the rattle was in first,second and third and slightly in top.I had the clutch replaced with a genuine replacement and the rattle was reduced to almost nil.
Just my bit.
AnswerID: 113233

Reply By: Member - Davoe (Widgiemooltha) - Friday, May 27, 2005 at 20:17

Friday, May 27, 2005 at 20:17
sounds about right, try using low 4 when idling bush tracks you get more versatility out of your gearing and it wont labour
AnswerID: 113242

Reply By: 80scruiser - Friday, May 27, 2005 at 20:45

Friday, May 27, 2005 at 20:45
It is in the clutch damper springs/bushes. If it has never been done, the clutch that is, it will only have rubber bushes in it and they will be buggered. Replace the clutch with a genuine toyota one which still has the rubber bushes in it and springs. The noise will be great for a while but will eventually come back but not as bad. I don't recommend to use after market like I did, go straight for the genuine product. If the damper bushes are totally gone when you start it, it should make a loud bang until the clutch takes up.
Once you do the clutch put 80w/90 oil in the transfer case and then fill the gearbox with mobil fluid 424 or caltex brand textran. It will have never changed better in its life.
Best of luck.
Any further info required don't hesitate to ask.
AnswerID: 113250

Follow Up By: Beast Of Bodmin - Friday, May 27, 2005 at 22:33

Friday, May 27, 2005 at 22:33
G'day 80Cruiser,
You need to be careful with ATF fluid in a manual box. Although l agree that the shift is usually much improved, the durability life of the gears is significantly reduced.
We found this in a previous job l had durability testing truck gearboxes.

Beast Of Bodmin
FollowupID: 369429

Follow Up By: 80scruiser - Saturday, May 28, 2005 at 14:47

Saturday, May 28, 2005 at 14:47
Textran isn't an ATF its a straight 80w oil used in ford power steering, agricultural machinery and toyata use it in the factory in the lc gearboxes.
FollowupID: 369464

Follow Up By: Spacko - Tuesday, Jun 07, 2005 at 15:18

Tuesday, Jun 07, 2005 at 15:18
Thanks for your reply. That does sound like what the problem is and it does occasionly make a bang on start up too. I will look into replacing the clutch soon and will look into what you said about the oils.

Thanks again Spacko
FollowupID: 370581

Reply By: Member - DOZER- Sunday, May 29, 2005 at 18:49

Sunday, May 29, 2005 at 18:49
Common...the diesel shakesbleepout of the driveline at low revs....the springs in your 250km clutch will be loose and that is the most of the noise...dont run so slow, change back....or buy an auto.
Sorry, but thats the short and curlies of it...common complaint
b4 you bag me out, walk a mile in my shoes, then your a mile away and have my shoes :)

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AnswerID: 113477

Reply By: Spacko - Tuesday, Jun 07, 2005 at 15:14

Tuesday, Jun 07, 2005 at 15:14
Thanks everybody for your responses. I am travelling at the moment and can't get to the internet that often.

I seems to me that it is the springs in the clutch. That is what my Dad suggested once. I would probably not worry at the moment as it won't do any damage but the cluch does shudder a bit on take off so it might be time to replace it. I have an oil leak under the bell housing so I think the rear main seal is leaking too. Might be time to get some work done.

AnswerID: 114760

Follow Up By: 80scruiser - Tuesday, Jun 07, 2005 at 17:50

Tuesday, Jun 07, 2005 at 17:50
Good idea. Use a genuine toyota rear seal and most importantly get the flywheel machined. They wear on a taper in which you can check with a straight edge due to the force of the clutch pressure plate.
If you do it yourself make sure you grease the spline, very lightly, grease the input shaft where the release carrier runs and grease the pivot pin. If you don't grease these the input shaft will wear and the carrier will sieze. The pivot pin will give a squeek every time you push the clutch in.
It will be quiet for about 6 months but the noise will come back but not as bad. It is a toyota diesel trademark.
At 250k you will probably find the clutch material is not even worn out either.
Best of luck.
FollowupID: 370607

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