life expectancy of gearbox once fifth gear whine starts

Submitted: Friday, Jun 17, 2005 at 13:31
ThreadID: 23940 Views:2346 Replies:10 FollowUps:6
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I've got a 1993 200tdi Disco which has been a very reliable machine. Unfortunately I made a mistake with gear oil changeover about 10,000kays ago and as a result, the box has developed a fifth gear whine. I'm wondering if anyone has driven a car with such a whine for years without problems? Am I likely to get some warning of complete failure (i.e. whine getting louder) or might it suddenly cr*p itself one day?
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Reply By: flappa - Friday, Jun 17, 2005 at 13:44

Friday, Jun 17, 2005 at 13:44
Depends what the whine is I guess.

I have had it happen twice (not in a 4wd) , but both times , it happened quite quickly. The Sigma , within weeks , the Celica , a couple of months. Both were bearing related.

Oh yeah , Celica told me it was getting worse . . . sigma just bleep itself. Was able to limp home in a low gear
AnswerID: 116150

Reply By: garrycol - Friday, Jun 17, 2005 at 14:38

Friday, Jun 17, 2005 at 14:38
these landrover people will be able to tell you

http://www.aulro.com//modules.php?name=Forums
AnswerID: 116154

Reply By: bjnt - Friday, Jun 17, 2005 at 14:39

Friday, Jun 17, 2005 at 14:39
Had an '84 Range Rover that got a 5th gear whine and vibration through the gearstick when away on a trip. Drove it home from Bris to Perth via Melb and it was still running fine. Got it fixed in Perth and the 5th gear cog had a bit of wear on several teeth.
AnswerID: 116155

Reply By: Wizard1 - Friday, Jun 17, 2005 at 14:48

Friday, Jun 17, 2005 at 14:48
If it were me, I'd lessen the chances of the gearbox failing in the middle if nowhere and get it re-built/conditioned now.

Its Murhpy's law, when it goes you will be somewhere, miles away from a mechanic without mobile or UHF coverage.

Wizard
Prado TD.

AnswerID: 116158

Reply By: Russel & Mary - Friday, Jun 17, 2005 at 15:02

Friday, Jun 17, 2005 at 15:02
Take it up north. Some of the natives will take the wine out for you. Rus.
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Follow Up By: Member - Glenn D (NSW) - Friday, Jun 17, 2005 at 18:37

Friday, Jun 17, 2005 at 18:37
Maybe they will change the engine oil and filter while they are at it
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Reply By: Member - Banjo (SA) - Friday, Jun 17, 2005 at 15:55

Friday, Jun 17, 2005 at 15:55
The whine you speak of might respond well (or not worsen at least) with different oil. I know people who have done this very thing - drain and refill with a good gearbox oil (on the heavier side) and add a pack of STP the get it nice and sticky. The only snag could be difficult gear selection when cold, but that may not happen.
With respect, seeing the vehicle is not worth heaps now, the above experimentation carries little risk in my view.
AnswerID: 116162

Follow Up By: Rosco - Bris. - Friday, Jun 17, 2005 at 16:44

Friday, Jun 17, 2005 at 16:44
Could be worth a try cobber, but beware .. not sure about that particular year but most are/were? designed to use ATF so it may hasten the demise if that's the case.

Cheers
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Follow Up By: pathfinder - Friday, Jun 17, 2005 at 17:37

Friday, Jun 17, 2005 at 17:37
yes, I was running ATF in it despite it being a manual box as that was what was recommended by some and it certainly improved the shift quality. However, I then heard many reports that ATF did not provide sufficient lubrication under many conditions and something more viscous such as VMX80 was required - which I put in and noise developed soon after...maybe I will go back to ATF...you can't win!
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Follow Up By: Rosco - Bris. - Friday, Jun 17, 2005 at 20:16

Friday, Jun 17, 2005 at 20:16
Without wishing to be the harbinger of doom, from what you've just said, you may have caused the prob. Manuals were also designed to run on ATF.
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Follow Up By: viz - Saturday, Jun 18, 2005 at 23:05

Saturday, Jun 18, 2005 at 23:05
Not a big fan of ATF in the gearbox - not enough shear protection. I replaced it with NEO 7 Weight ) Oil - reeealy reealy expensive, but veery veery good. Never had a problem in 10 years with 260 kw and 580 nm of torque up front...

Any Defender or earlier RR highly recommended - in tranny or transfer

As to the OP, if you are in Sydney, talk to Graeme Cooper 02 9550 2689. Layshaft whine can be tolerated - but not sure of 5th gear.

/viz
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Follow Up By: viz - Saturday, Jun 18, 2005 at 23:08

Saturday, Jun 18, 2005 at 23:08
Ooops a thought:

we are talking manual gearboxes, right? Not autos. Neo 7 weight is for manuals. DON'T put it in autos fer (insert favourite deity) sakes!

/viz
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Reply By: Member - Athol (NSW) - Friday, Jun 17, 2005 at 16:27

Friday, Jun 17, 2005 at 16:27
I have a similar problem, about 2 years ago I reconditoned the motor after cracking the crank so while it was in bits got a quote to kit out the gearbox ($600) even though there was nothing wrong with it, I thought why not. Now two years later and no hope of waranty it has developed a whine in fifth and it is getting worse. Now I'm kicking myself for ever touching it in the first place(if it aint broke,dont fix it), and I have explain to the boss that it needs doing again. Ouch

Athol
AnswerID: 116164

Reply By: Yeah Mate - Saturday, Jun 18, 2005 at 07:34

Saturday, Jun 18, 2005 at 07:34
Pathfinder

My Forerunner whines when in 5th, did before I rebuilt the box and did after….and still sings 60k down the track. I think all luxs do. In the falcon xf’s, lazers and telstar they us to run atf to ease the notchie gear changes. But I think it is advisable in your case to stay with a gear oil, say ep80w90 as 4x4 have a lot of torque related stresses in low gear. So maybe you might have scoured the surface of the gear teeth and it may just whine away…. then again……. only one way to find out.
AnswerID: 116225

Reply By: kesh - Saturday, Jun 18, 2005 at 09:26

Saturday, Jun 18, 2005 at 09:26
If you look in your vehicle handbook it will tell you that ATF dexron 111 is the lubricant to use. These boxes have an oil pump to circulate the lubricant, and the heavy stuff just doesnt get pumped to where it should. There were many early defender/disco boxes destroyed by enthusiastic mechanics (even L/R service) simply refilling the gearbox with 80/90 oil (which the transfer case DOES use) at the first major service.
The problem is possibly the 5th. gear support bearing (roller) which could be pitted.This could also occurr even with correct lubrication. It will probably get noisier but by then you will no doubt have fixed it!
good luck kesh
AnswerID: 116229

Reply By: Andrew from TrekTable - Saturday, Jun 18, 2005 at 20:59

Saturday, Jun 18, 2005 at 20:59
pathfinder,

Does your radio work fine?

I've found the 5th gear whine in my Jackaroo seems to go away when I turn the radio up. Remarkable huh?

Seriously, some boxes are known to whine and run forever (eg jackaroo). Others give trouble much earlier. It's best to check with similar vehicles or those who work on alot of them.

Andrew
AnswerID: 116287

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