What temperatures do manual gearboxes and transfer cases typically run at?

I am curious to know if anyone has some typical transmission temperatures for the 5 speed td42 manual box and also the transfer case on the Y60 Patrol? I am going to be installing temperature senders on both items and am looking for a nominal set up starting point for the alarm and also the normal running condition.

I understand this will vary with ambient temperature and also the load due to towing or loaded up 4wd'ing, so am hoping someone has seen something written about nominal temperatures.

Unsure but keen to find out where to install probe for sensor...
I am aware they do run hot and the older transfers use a lighter oil.

Cheers

We're all ere coz we ain't all there.

Quote:

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Originally Posted by MB TD42

Unsure but keen to find out where to install probe for sensor...
I am aware they do run hot and the older transfers use a lighter oil.

Cheers

We're all ere coz we ain't all there.

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At this stage the plan is to remove a casing bolt on the lower side of the gearbox and transfer case and sandwich the 'ring pick-up' fitting between bolt head and casing. This will be accurate enough for what I want. As long as I insulate the actual area I should be able to get a reasonable reading, mostly free from air and water cooling effect in the main.

I would assume its like any gearbox in automotive or industry. 60-80 degrees oil temp is still good. The majority of bearing monitors I've worked on or installed usually has a high temp warning above 80 and a bigger warning/shutdown/whatever about 95ish

Quote:

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Originally Posted by Ben-e-boy

I would assume its like any gearbox in automotive or industry. 60-80 degrees oil temp is still good. The majority of bearing monitors I've worked on or installed usually has a high temp warning above 80 and a bigger warning/shutdown/whatever about 95ish

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Thanks Ben, really good info, appreciate it.

Quote:

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Originally Posted by MB TD42

Unsure but keen to find out where to install probe for sensor...
I am aware they do run hot and the older transfers use a lighter oil.

Cheers

We're all ere coz we ain't all there.

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Dunno about GQs. My understanding is the atf is in my '00 GUtd42t due to the autohubs.
With thicker gear oil when cold it can result in the a bit of front drive shaft rotation even when in 2wd, due to thicker viscous oil, resulting in the autohubs engaging.
Mine has fully syn atf in it to avoid.
I like the autohubs so have kept them.