2-8. TRANSMISSION TROUBLESHOOTING (CONT)
TEST OR INSPECTION
5. HIGH TRANSMISSION OIL TEMPERATURE (CONV TEMP GAGE INDICATES EXCESSIVE TEMPERA-
Step 2. (Cont).
Start engine and operate at idle speed. If CONV TEMP gage pointer is
not approximately 1/2 inch from bottom of gage:
Be sure parking brake valve knob is pushed in.
Press brake treadle and valve and move transmission control lever
to H position.
Increase engine speed to full throttle and hold for 30 seconds.
Set transmission control lever to N position and operate engine at
idle speed for ten seconds.
Repeat the above until CONV TEMP gage needle is approximately 1/2
inch from bottom of gage.
Increase engine speed to full throttle. Be sure transmission control
lever is in N position. Pressure gage should indicate 40 psi.
Decrease engine speed to idle and turn off engine.
a. If pressure gage indication was higher than 40 psi, a restric-
tion exists in oil cooler circuit. Disconnect transmission
cooler lines and check for restriction (refer to TM 5-3805-262-
20). Flush and clean oil cooler located at bottom of radiator.
b. If pressure gage indication was less than 40 psi, spring in
torque converter pressure regulator is broken or damaged.
Replace transmission (page 3-330) and forward to general support