TM 9-2320-280-34
17-32. TRANSMISSION OIL PRESSURE TESTS (3L80) (Cont' )
d
9.
Apply service brakes and place transmission shift lever in "1" (low 1) and operate engine at 1,000
rpm, note pressure reading. Pressure should be 135-160 psi (931-1103 kPa).
10.
Apply service brakes and place transmission shift lever in "R" (reverse) and operate engine at 1,000
rpm, note pressure reading. Pressure should be 95-150 psi (655-1034 kPa).
11.
Activate kickdown switch manually or through the use of an electrical jumper lead. Apply service
brakes and place transmission shift lever in "D" (drive) and operate engine at 1,000 rpm, note
pressure reading. Pressure should be 90-110 psi (621-758 kPa).
NOTE
Next pressure test must be performed during a road test or with
vehicle raised and tires off the ground. Pressure must be recorded at
rpm specified with closed throttle.
12.
Place transmission shift lever in "D" (drive) and take foot off brake. Operate engine at 2,000 rpm,
close throttle (foot off accelerator), and take pressure reading when engine rpm is between 2,000-
1,200. Pressure should be 55-70 psi (379-483 kPa).
17-151
