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Cat 977L Transmission Oil Overheating

M

Morgan Flowers

New Member
Joined
Dec 7, 2021
Messages
1
Location
Jamestown, TN
I have a Cat 977L 11K5351 that the transmission oil is overheating after about 3 hours of use (in the summer). It appears that there is no oil flowing to the oil cooler beside the radiator as I used a laser temp gun and it showed about 110 degrees and the transmission housing was around 235 degrees. Is there a thermostatically controlled bypass on the cooler lines? I looked but couldn't see anything. Let me know if you all have any ideas and thank you for your help.
 
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