TM 9-2320-289-34
5-11.
TRANSMISSION OIL PRESSURE TESTING (Con’t).
CAUTION
Tests “C” through “ F“ (see Table 5-1) must be run within a 2 minute span.
If longer time is taken, transmission damage may occur.
Table 5-1. Preliminary Checking Procedure
TEST RANGE
NORMALP s
A., Brakes applied; “N” (Neutral); engine
at 1000 rpm,
55-70 psi (379-483 kPa)
B. Engine at idle.
60-85 psi (41 4-586 kPa)
C. Brakes applied; “ D“ (Drive); engine at
1000 rpm.
60-90 psi (41 4-621 kPa)
D. Brakes applied; “1” or “2”; engine at
1000 rpm.
135-160 psi (931-1 103 kPa)
E. Brakes
applied; “R“
(Reverse);
engine at 1000 rpm.
95-150 psi (655-1034 kPa)
NOTE
Downshift switch is located on
right side of accelerator pedal
plate,
F. Brakes applied; “D“ (Drive); engine at
1000 rpm; downshift switch activated
by pulling out.
90-110 psi (621 -758 kPa)
G. Governor
check;
vacuum
line
disconnected at modulato; "D"
(Drive); brakes released: check
pressure at 1000 rpm. Slowly increase
Pressure drop of 10 psi (69 kPa) or more
to 3000 rpm.
indicates a problem.
5-53
