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Gearbox stuffed?

Tech Talk for Cruiser owners.

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Gearbox stuffed?

Post by macklux83 »

afternoon all,
my 83 hilux has started making a grinding noise when i back off the accelerator,we have checked the diff and everything seems fine so i presume it is probaly the gearbox,it was rebuilt 6 months ago and of course is now out of warranty and the place that did it refuse to believe that it is the gearbox,at the moment i cant take it anywhere to get it looked at but if anyone has an idea to what else it may be then that would be helpful.
it has not done any hard work since the rebuild apart from towing a trailer for a day and it is not driven hard.
acheers
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Post by 45punkbus »

sounds very similar to my gear box/transfer case when it went,

mine blew because a huge chunk of the transfer case blew out and lost all the fluid, so maybe check your gear box/transfer case for fluid if not already done,

thats what i can gather from my experinces...

cheers

Dean
Holden or laxatives? I pick laxatives, at least I'm guaranteed the sh*ts gonna run !!!

parting out mk patrol
http://carl.outerlimits4x4.com/viewtopic.php?p=1043971#1043971
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Post by 45punkbus »

hey was the transfer case rebuilt at the same time as the gearbox?
Holden or laxatives? I pick laxatives, at least I'm guaranteed the sh*ts gonna run !!!

parting out mk patrol
http://carl.outerlimits4x4.com/viewtopic.php?p=1043971#1043971
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Post by Modified Toy »

I would put the transfer into neutral and drive the gear box up through the gears i know there will not be load on the gears ,but interesting if the nosie is still there.

other than that try uinversals slip yolk or the pinion flange nut to make sure it is tight.
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Post by crankycruiser »

Maybe one of the unis joints has shit itself
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Post by bad_religion_au »

Modified Toy wrote:I would put the transfer into neutral and drive the gear box up through the gears i know there will not be load on the gears ,but interesting if the nosie is still there.

other than that try uinversals slip yolk or the pinion flange nut to make sure it is tight.
i did this when trying to isolate the same problem 45punkbus is talking about, and was convinced it was the gearbox due to this

i didn't realise the idler shaft still turned in Neutral.

i'm tipping if the T case wasn't rebuilt at the same time, that could be the issue, but check uni joints etc. their cheaper to fix :D

what prompted the gearbox rebuild?
Spit my last breath
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Post by Hybrid »

I changed the pinion seal on mine back in the day and it made a shuddering whine that I spose you could call a crunching noise when you backed off. It had something to do with not setting the backlash after having the flange off I think. Have you had it off recently?
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