Suzuki SY413 Service Manual page 2091

7B1-38 AUTOMATIC TRANSMISSION
1. Fluid pressure check hole plug bolt
2. Valve body cover
1. Valve body cover
LINE PRESSURE TEST
Purpose of this test is to check operating conditions of each part
by measuring fluid pressure in fluid pressure line.
Line pressure test requires the following conditions.
D Automatic fluid is at normal operating temperature (70 to
80_C/158 – 176_F).
D Fluid is filled to proper level (between FULL and LOW on dip-
stick).
1) Apply parking brake securely and place chocks against wheels.
2) Remove engine under cover at right side.
3) Remove fluid pressure check hole plug bolt.
4) Attach oil pressure gauge to fluid pressure check hole in trans-
mission case.
Special Tool
(A): 09925-37811-001
CAUTION:
After attaching oil pressure gauge, check that not
fluid leakage exists.
5) Depress foot brake fully, run engine at idle and stall and then
check fluid pressure in "D" or "R" range.
CAUTION:
Do not continue running engine at stall speed longer
than 5 seconds.
Engine running mode Engine running mode
At idle speed
At stall speed
Test result
Line pressure higher
than standard level
in each range
Line pressure lower
than standard level
in each range
Line pressure lower
than standard level
only in "D" range
Line pressure lower
than standard level
only in "R" range
Line pressure
"D" range
2
3.6 – 4.2 kg/cm 5.1 – 6.1 kg/cm
52 – 60 psi
2
11.0 – 12.8 kg/cm 14.7 – 16.9 kg/cm
156 – 182 psi 209 – 240 psi
Possible cause
D Malfunctioning pressure control
solenoid valve
D Malfunctioning primary regulator
valve
D Malfunctioning pressure control
solenoid valve
D Malfunctioning primary regulator
valve
D Defective oil pump
Fluid leakage from "D" range pressure
circuit
Fluid leakage from "R" range pressure
circuit
"R" range
2
73 – 86 psi
2