tranny and transfer case coolant lines...?

jayman2003

jayman2003

Member
Well...I was under the Scout dealing with my rusted exhaust bolts when I noticed some lines tapped into the radiator and running to the tranny and t-case. Is this a factory option or has someone just tried to make a tranny and t-case cooler out of the radiator as well...?
 
For the "era", those vehicles with a auto trans had (or could have) a transmission cooler in the bottom of the radiator

not sure if it was in all ihs, but it was an option...

Since two different "oils" are in the transfer case and 727, they really do not "mix". (if they do, you have a real problem.)

plus there is no pump in the transfer case to circulate fluid...

I think the lines only run to the 727... Need to make sure the lines do not rub against the frame / etc.
 
All tf 727 (IH code t-407) transmissions in all ihc-produced vehicles (including motorhome chassis) use a heat exchanger in the driver-side radiator tank (cross-flow radiator). Same for all 727 apps for any other oem, chrysler, amc, etc.).

The transfer case in a Scout II is "married" (direct-coupled) but does not share a lubricant supply with the transmission. The heat exchanger is only used with the 727 transmission.

The very earliest Scout II is more commonly known by it's model designation..."810". Those could have had a borg warner auto-trans. Many had an optional marine-style heat exchanger plumbed into the lower radiator hose with a return line tee'd into a heater hose, however, they had an air-cooled torque converter which incorporated a cooling fan in it's design. The same transmission setup was also used in the Scout 800 (with and without heat exchanger) and in pickalls of the same era. 4x4 Scout 800 had a married transfer case, the pickalls have always used a divorced transfer case in 4x4 option.

This thread will be moved to the "transmission tech" sub-forum.
 
You must log in or register to reply here.
Back
Top