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Diff or tailshaft or transfercase

Tech Talk for Nissan owners.

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Posts: 24
Joined: Wed May 27, 2009 7:10 pm
Location: brisbane

Diff or tailshaft or transfercase

Post by Tommie »

I have a noise in my 89 GQ wagon that only happens when i engage 4wd.
I dose it when i put it in 4wd without the hubs locked and when they are locked.
It's not there if i lock the hubs and leave it in 2wd.
And it seems to be worse when its coasting.
It dose it in or out of gear and is noticable anything over about 40kph.
I just greased the tailshaft and it seems tight.

Thought i would ask for help before i pull things apart and break them more. :?

Cheers
Tom.
Posts: 470
Joined: Wed Jan 24, 2007 12:21 pm
Location: Australia

Post by 351ciofgrunt »

Sounds like you've narrowed it down to the transfer case

Can you describe the sound?
GQ Patrol Wagon, 6 point roll cage
351 cleveland, CHI heads, solid cam, Funnelweb single plane, 750 HP DP
Posts: 237
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Location: QLD

Post by nerida67 »

could it be the CVs ???
simple check
lock the front hubs, low range and turn sharp right
if theres a clunk clunk noise itll be the right CV
turn sharp left, if as above then its the left CV
would locking the hubs do anything if theres no power goin to the front diff (2WD )???
do u have a body lift ???
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Re: Diff or tailshaft or transfercase

Post by big red »

Tommie wrote:I have a noise in my 89 GQ wagon that only happens when i engage 4wd.
I dose it when i put it in 4wd without the hubs locked and when they are locked.
It's not there if i lock the hubs and leave it in 2wd.
And it seems to be worse when its coasting.
It dose it in or out of gear and is noticable anything over about 40kph.
I just greased the tailshaft and it seems tight.

Thought i would ask for help before i pull things apart and break them more. :?

Cheers
Tom.
front tailshaft slip joint if its recently been raised [runs in a new spot]
or front tailshaft unijoints
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Posts: 24
Joined: Wed May 27, 2009 7:10 pm
Location: brisbane

Post by Tommie »

Sorry forgot to describe the sound :oops:

Sounds like a rumbleing sort of sound (NOT clicking or banging).
I figure it sounds like a dry worn bearing.
Coming from the front and very noticable.
Here's a rundown of what ive done recently in order:

2" Bodylift (no noise after bodylift) 12 months ago
3" efs sus lift (by ON TRACK) with castor bushes (5 months ago)
35" tyres (5 months ago)
Easter is the first time i have driven it fast enough to make the noise since the lift went in although i have given it a bit of a work out since the lift whent in but mostly slow flexy sort of stuff.

Is there any point pulling the tailshaft off and seeing if it still does it.?
Could rule out the transfercase....

Cheers
Tom.
Posts: 103
Joined: Sat Dec 19, 2009 9:27 pm
Location: Ipswich

Post by tufftruckin »

My h260 has the same noise in the back end! problem is it is there in 2wdand it is only when coasting
An ounce of precaution is better than a ton of cure!
Posts: 24
Joined: Wed May 27, 2009 7:10 pm
Location: brisbane

Post by Tommie »

Come on guy's i need some more ideas before i start spilling diff oil all over the place.......
Posts: 237
Joined: Sun Dec 06, 2009 2:03 pm
Location: QLD

Post by nerida67 »

check the tailshaft unis
simple check
ly under car and turn the tailshafts and see how much free play is in the unis
if theres a bit, then yeah the unis
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