LC100 T/D 2003 Gearbox Rattle

sounds like it could be a throw bearing

oops should read throw out bearing

Noisy input shaft bearing in the gearbox !

When you put your foot on the clutch you are stopping the input shaft form turning

Have it looked at so you can be given a time frame on how much life it has left in it

Jason,
I assume your vehicle is a HDJ100 (factory TD), and not an aftermarket turboed HZJ105 Cruiser. I have the same H150F gearbox as you, and mine is quiet, having done 100,000k.

Check the obvious things - that the oil level is OK, and that the oil is the correct 75/90 gear oil. Sometimes thinner oils are slipped into these boxes to improve cold shifting.

But these noises has been common in Toyotas for as long as they've been around.

Two possibilties that I know of:
#1 If the noise is high pitched and goes away when you very lightly touch the clutch, it will probably be the clutch release bearing touching a groove thats wearing into the diaphragm spring forks - its just a nuisance.
#2 If the noise is a lower pitched rumble and present until the clutch is fully depressed, it will most likely be coming from the input shaft or idler gears which are all turning unless the clutch is depressed. Usually just some play or a bit of roughness developing. Most people do nothing about this, as the gearbox works fine. It would be unusual to have a serious problem in the heavier H150F box.

Cheers
phil

Thanks everyone I will get it checked out asap.

Regards Jason

Hi Brooka
It will be the damper springs in the clutch plate. They have a spring with either nylon bushes either side or rubber bushes. They wear out due to the torsional forces of the 1HDT engine. The 1HZ do the same. You can try heavier oil in the box but it will make shifting worse. Sounds like a new clutch to me.
BTW how many km's has it done?
120scruiser