TM 9-2320-280-20-1
REFERENCE INFORMATION
Change 1 2-403
TRANSMISSION SYSTEM
(3L80)
NOTE
NEXT TEST MUST BE PERFORMED DURING A ROAD TEST OR WITH VEHICLE RAISED
AND TIRES OFF THE GROUND. RECORD PRESSURE WITH THROTTLE CLOSED.
12. Place lever in D and take foot off brake. With engine at 2000 RPM, close throttle and read pressure between
1200 and 2000 RPM. Pressure should be 65-70 psi (448-485 kPa). If not, notify DS Maintenance.
13. Shut off engine, remove transducer and reinstall plug.
STE/ICE-R TEST #50
0 TO 1000 PSIG PRESSURE
INTERLEAVED WITH RPM
1. Connect blue pressure transducer
(1000 PSI) to system under test, and other
end to a W4 cable. Make sure the system
under test is not pressurized.
2. Dial 01 into VTM, and then 50 when
prompted.
3. Perform offset test.
4. Start engine and VTM will display
pressure interleaved with RPM.
1. Remove plug from pressure port on left side of transmission.
2. Connect transducer to port using appropriate fittings.
3. Perform offset test.
4. Start engine and check for leaks at connections.
5. Bring engine to operating temperature.
6. Place shift lever in N and bring engine to 1000 RPM (STE/ICE-R test 10). Pressure should be 55-70 psi
(379-483 kPa). If not notify DS Maintenance.
7. Apply service brakes and place shifter in D. Operate engine at 1000 RPM. Pressure should be 60-90 psi
(414-621 kPa). If not, notify DS Maintenance.
8. Apply brakes and place lever in 2. With engine at 1000 RPM, pressure should be 135-160 psi (931- 1103
kPa). If not, notify DS Maintenance.
9. Apply brakes and place lever in 1. With engine at 1000 RPM, pressure should be 135-160 psi (931-1103
kPa). If not, notify DS Maintenance.
10. Apply brakes and place lever in R. With engine at 1000 RPM, pressure should be 95-150 psi (655-1034
kPa). If not, notify DS Maintenance.
11. Apply brakes and place lever in D. With engine idling, pressure should be 60-85 psi (414-586 kPa).
If not, notify DS Maintenance.
Transmission oil pressure test
Replace transmission
modulator, refer to (para. 5-14).
