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"Remember, you're unique... just like everyone els
nissan patrol
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Discussion Starter · #1 · (Edited)
Is my gearbox rooted??? Now with pic's of inside the box

Hi lads

Did a search and could find specific answers to my problem.

I have a 95 GQ RD28 with 290,000kms on the clock and manual transmission.

Problem seems to to be the gearbox but I'm not sure.

When I have the car in neutral and clutch out I have a bearing failure style rattle, but when the clutch is in the noise goes away. The noise also comes back as I go up through the rev range occasionally.

Im hoping the gearbox isn't rooted but of it is I'm going to be hunting for a 4.2 donor car as my body is perfect and its loaded with accessories I couldnt afford to replace, this could my perfect excuse to upgrade.

Thanks for any input.

Drew.
 

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nissan patrol
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by the sounds of it its your thrust bearing, the reason it goes away when the clutch is in is because there is pressure on it.
 

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also incase you google it or something, the yanks call it a throwout bearing
 

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I'd also say thrust bearing.

Had one replaced in my corolla daily drive a year or so ago. Sounds like the same problem
 

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"Remember, you're unique... just like everyone els
nissan patrol
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Discussion Starter · #5 ·
That's the bearing on the fork OUTSIDE the gearbox yeah??? I'm praying to all the gods now
 

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Enemy of Reality
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Dad's does this. He has replaced it, but it still grumbles a little. Pretty sure its the throwout bearing.
 

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That's the bearing on the fork OUTSIDE the gearbox yeah??? I'm praying to all the gods now
thats the one buddy, the manual makes it look easy to get out... really, how heavy could the gearbox be. lol. if your a bit mechanically minded and really strong you should be able to change it yourself. while your there you may as well do the clutch too
 

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Hate to say it but it sounds more like a gearbox/input shaft bearing. I think you can rule out the throwout/thrust bearing since the noise goes away with the clutch depressed, and this is when that bearing is under the most pressure, and if it was worn it would make more noise then.
 

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dunno devilyano, i had the same thing so i took it to a gearbox specialist to get it fixed and he garanted that it would be the thrust bearing, but i cant tell you for sure because i never got it fixed :D
 

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Hi lads

Did a search and could find specific answers to my problem.

I have a 95 GQ RD28 with 290,000kms on the clock and manual transmission.

Problem seems to to be the gearbox but I'm not sure.

When I have the car in neutral and clutch out I have a bearing failure style rattle, but when the clutch is in the noise goes away. The noise also comes back as I go up through the rev range occasionally.

Im hoping the gearbox isn't rooted but of it is I'm going to be hunting for a 4.2 donor car as my body is perfect and its loaded with accessories I couldnt afford to replace, this could my perfect excuse to upgrade.

Thanks for any input.

Could be normal rollover noise which comes with age & maybe uneven idling, backlash of front constant mesh gears when idling with foot off clutch.
May not be a big problem, however won't hurt to get it checked out & get an opion
Cheers Macca:rolleyes:
 

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"Remember, you're unique... just like everyone els
nissan patrol
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Discussion Starter · #11 ·
Hate to say it but it sounds more like a gearbox/input shaft bearing. I think you can rule out the throwout/thrust bearing since the noise goes away with the clutch depressed, and this is when that bearing is under the most pressure, and if it was worn it would make more noise then.
Winner!! Spot on, had three separate places here in Cairns say the same after driving the car.

Now I have three options:

Rebuild my box drive in drive out $2000

Get a reconditioned box and put it in myself for about the $1800 mark

Or

Second hand box for $850 delivered plus the thrust bearing I would do at the same time

The reconditioned box and rebuild is an easy decision but the second hand one has a $1,000 advantage.

What would you do???
 

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patrol boxes are suppose to be the strongest on the market and yours needs rebuilt at 350 000?
 

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If you are satisfied it is the throw-out bearing (which it sounds like it is), then replace that bearing. You would be waisting your money rebuilding/replaicing your gear box. I agree with nethergate that you may as well replace the clutch while you have the box out. I would also replace the rear main seal & spigot bearing.
 

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got the same issue mate, had it looked at by 3 gearbox specialists and 2 have said its the clutch and one said he thought it had a duel mass fly wheel witch it doesn't lol getting my clutch done in couple of weeks hope it fixes it.

there reasoning was that a bearing will "wizz" as you drive it . mine doesn't it just rattles when on idle. cant hear anything whilst driving.
 

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BORDERTREK 4X4 & FABRICATION
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Mine does it. Has since I bought it. I swapped the gearbox out ages ago for a GU box (my GQ gearbox had other issues) and guess what?

It still does the exact same noise in neutral with the clutch engaged (pedal out)!

It's clutch plate spring rattle or the fork rattling on the throw out bearing not the gearbox. Motor noise (or diesel vibration) is transmitted through the clutch and if it's getting on a bit they rattle.
If it was input shaft bearings your gearbox would be making other noises as well while you're driving, like my old one was.

Cheers, sudso
 

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Since the majority of replies indicate a throwout bearing or clutch problem, I have just placed my humble pie in the oven to warm up. I will await the outcome of this thread before I eat it.:)
 

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"Remember, you're unique... just like everyone els
nissan patrol
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Discussion Starter · #17 ·
patrol boxes are suppose to be the strongest on the market and yours needs rebuilt at 350 000?
I agree 100% but it's at 290,000km's and I've only owned it the last 100,000km's. What's to say it wasn't abused in it's first 190,000km's and then you throw in other variables too. TD42's die with low kays on them (sometimes), they are tough as **** but if they're not looked after, like my truck may not have been then things die.

If you are satisfied it is the throw-out bearing (which it sounds like it is), then replace that bearing. You would be waisting your money rebuilding/replaicing your gear box. I agree with nethergate that you may as well replace the clutch while you have the box out. I would also replace the rear main seal & spigot bearing.
I'm not wanting to spend this money but with the experts I saw they all said the same thing. I will take it to another place I've been told about, they are THE gearbox people in Cairns but he said he would not do the job unless I let him replace all the synchro's, upgraded 5th gear and did the whole she-bang ($3500 as a minumum) so he can look but he's not touching.

As for the spigot bearing and rear main they'll get done but the clutch is not, it's only done 80,000km's so I'm not wasting $500 on a new one.

got the same issue mate, had it looked at by 3 gearbox specialists and 2 have said its the clutch and one said he thought it had a duel mass fly wheel witch it doesn't lol getting my clutch done in couple of weeks hope it fixes it.

there reasoning was that a bearing will "wizz" as you drive it . mine doesn't it just rattles when on idle. cant hear anything whilst driving.
Mine is rattly when coming up through the gears like I said in my OP.

Mine does it. Has since I bought it. I swapped the gearbox out ages ago for a GU box (my GQ gearbox had other issues) and guess what?

It still does the exact same noise in neutral with the clutch engaged (pedal out)!

It's clutch plate spring rattle or the fork rattling on the throw out bearing not the gearbox. Motor noise (or diesel vibration) is transmitted through the clutch and if it's getting on a bit they rattle.
If it was input shaft bearings your gearbox would be making other noises as well while you're driving, like my old one was.

Cheers, sudso
This is a new theory, I like the sound of it too. I'll put it to the bloke looking at it next. As for your comment about the gearbox making "other" noises too do you mean ones other than the rattle I get at idle???

Since the majority of replies indicate a throwout bearing or clutch problem, I have just placed my humble pie in the oven to warm up. I will await the outcome of this thread before I eat it.:)
Mmmmm.... warm apple pie!! LOL May be in the oven for a while while I save up. Get some custard on standby, that'll make it even better.
 

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BORDERTREK 4X4 & FABRICATION
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This is a new theory, I like the sound of it too. I'll put it to the bloke looking at it next. As for your comment about the gearbox making "other" noises too do you mean ones other than the rattle I get at idle???
Yep.
 

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I have a petrol so I don't get to hear this noise, but seach the forum for gear box rattle, or rollover rattle. People here say it happens in trucks at idle too. The petrol doesn't have a violent idle like the diesel and the same box is quiet.

I'm not saying this is your problem, but I think you should do the search.

Also, I think I read here you can buy a brand new gearbox for about the same price as your expensive rebuilder wants.

Finally, any noisy throwout bearing I have had, is only noisy when clutch is depressed as that is when it is spinning. When clutch is engaged, throwout bearing is not moving. (someone else said this above too).
 
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