Progress Report: My FZJ80 T-Case overhaul

[Rdonahe]

When driving in high gear, or during normal driving on public roads, are you experiencing any gear-like noises that you haven't heard before?
I also replaced the high-range gear with an underdrive gear, but now when I press the accelerator, it makes a hissing sound that I've never heard before.

I hear a very slight gear whine in high range since the new gears. I was expecting this based on reading other's threads. I wouldn't describe mine as a hissing sound. The sound mine makes easily fades into the background.

 

[lc80fzj]

I hear a very slight gear whine in high range since the new gears. I was expecting this based on reading other's threads. I wouldn't describe mine as a hissing sound. The sound mine makes easily fades into the background.

So, some gear noise is inevitable, after all. In my case, it's not constant; it only seems to occur when I press the accelerator hard.
The sound is more noticeable when the temperature is low first thing in the morning, but even then, after driving for a while and the case warms up, the sound seems to become less noticeable.

 

[Rdonahe]

So, some gear noise is inevitable, after all. In my case, it's not constant; it only seems to occur when I press the accelerator hard.
The sound is more noticeable when the temperature is low first thing in the morning, but even then, after driving for a while and the case warms up, the sound seems to become less noticeable.

Interesting. Now that I think about it I hear it in my rig when off/mid throttle. Maybe it still makes the same noise when I am on throttle but the engine exhaust note drowns it out?

Either way sounds like yours is in the range of what I (just a garage mechanic level guy) would consider normal.

 

[lc80fzj]

これは良いスレッドですね。

これは良いスレッドですね。

ご覧いただきありがとうございます。

Interesting. Now that I think about it I hear it in my rig when off/mid throttle. Maybe it still makes the same noise when I am on throttle but the engine exhaust note drowns it out?

Either way sounds like yours is in the range of what I (just a garage mechanic level guy) would consider normal.

The degree of preload on the idler gear and output gear is determined by adjusting the amount of shim protruding (distance from the top surface of the half-case) from the bearing races of these gears.
I referred to GEORG's explanation on YouTube and adjusted those values so that they were approximately 0.3mm.

 

[lc80fzj]

The degree of preload on the idler gear and output gear is determined by adjusting the amount of shim protruding (distance from the top surface of the half-case) from the bearing races of these gears.
I referred to GEORG's explanation on YouTube and adjusted those values so that they were approximately 0.3mm.

I suspect that the degree of preload affects the level of gear noise after installing new gears.