Help in issue identification R380/LT230

[ThorneGator]

Hello all,

Could use some help/ suggestions in how to identify the issue I am having....

Vehicle: 2005 110, (TD5, R380, LT230 with a roamer drive) with 320,000kms
I have a loud whining sound in all my gears with the whining in 5th being the loudest. On the motorway it is now louder than the engine:eek2:
The whining is present when applying throttle, but goes away when I left off the accelerator. The sound is also originating from the gearbox/transfer area though I cannot tell which definitively.

Here is a video running through the gears up to about 120kph.

https://1drv.ms/v/s!AvBgCQ_FfvNXpxt8YqOGLS4rYSI2?e=j8vg5e

My worry is that it is a bearing going (perhaps rear support bearing).

Is there any testing I can do to identify if it is the transfer case or gearbox causing this whine so I can further isolate the issue?

[discorevy]

Hi
I'd say that's more transfer case, roamer drive or even diff noise. Draining the oils will probably ID it.

Alternatively, put it up on axle stands, let everything rotate in say 2nd or 3rd gear and zone in on the bearings until you find the noisy one with a mechanics stethoscope or the old screwdriver to the ear, but be careful.

[ThorneGator]

Hi
I'd say that's more transfer case, roamer drive or even diff noise. Draining the oils will probably ID it.

Alternatively, put it up on axle stands, let everything rotate in say 2nd or 3rd gear and zone in on the bearings until you find the noisy one with a mechanics stethoscope or the old screwdriver to the ear, but be careful.


Thanks Discrevy, good idea with the jackstands, etc. Then I could finally ID the location/ issue. Appreciate the thoughts!

[DazzaTD5]

it sounds like the transfer case to me, but...

*you could also drop the fluid out of the transfer case, check out the colour of the oil and see how much metal has collected on the mag drain plug.
*also while the fluid is out, drop the bottom plate and see how much the centre gears move around, if the bearings have collapsed you will be able to move it quite a bit and may also see parts of the bearings everywhere.
*you can also drop the front and rear shafts, turn one of the output flanges by hand and listen.
*while the bottom plate is off, you can also put a socket on say the rear output flange and if you have an adaptor spin it with a variable speed drill (I use a cordless drill that I clearly dont like as its hell on a drill and lets out a bit of smoke now and then). (yes there is enough residual oil in the box not to worry)

[ThorneGator]

Thanks Dazza, This is great and gives my some good direction. I think this will give me good direction along with discorevy's advice.

Cheers,


it sounds like the transfer case to me, but...

*you could also drop the fluid out of the transfer case, check out the colour of the oil and see how much metal has collected on the mag drain plug.
*also while the fluid is out, drop the bottom plate and see how much the centre gears move around, if the bearings have collapsed you will be able to move it quite a bit and may also see parts of the bearings everywhere.
*you can also drop the front and rear shafts, turn one of the output flanges by hand and listen.
*while the bottom plate is off, you can also put a socket on say the rear output flange and if you have an adaptor spin it with a variable speed drill (I use a cordless drill that I clearly dont like as its hell on a drill and lets out a bit of smoke now and then). (yes there is enough residual oil in the box not to worry)