Specifications

AISIN AUTOMATIC TRANSAXLE 5A2 – 29
DAEWOO V–121 BL4
Result of Time Lag Test Cause of Failure
Longer than standards ”N” ³ ”D” Lower line pressure
S Pressure control solenoid (PCS) failure
S Primary regulator valve failure
Forward Clutch (C1) failure (Slipping)
Timing solenoid failure
Oil leak for ”D” range circuit
Longer than standards ”N” ³ ”R” Lower line pressure
S Pressure control solenoid (PCS) failure
S Primary regulator valve failure
Reverse clutch (C3) failure (slipping)
1st & reverse brake (B3) failure (slipping)
Oil leak for ”R” range circuit
Hydraulic Test
Hydraulic test can inspect working condition inside A/T by
measuring line pressure in ”D” / ”R” range and ”idle” / ”stall”
condition.
1. Chock 4 Wheels and apply parking brake fully, lock
vehicle perfectly.
2. Install oil pressure gage adapter DW240–010–02 to
test hole for line pressure.
3. Fully pressed on foot brake pedal with left foot, shift
into ”D” and ”R” range and measure line pressure
”idle” / ”stall” condition.
Line pressure
Mpa (kgf/cm
2
)
D R
Engine idle 0.37 (3.9)
–0.14 (4.2)
0.59 (6.0)
–0.68 (6.9)
Engine stall 1.10 (11.3)
–1.23 (12.5)
1.58 (16.2)
–1.83 (18.6)
Notice : Do not continuously run longer than 5 sec be-
cause of extreme increasing oil temp.
Make sure to keep interval for more than 1 min between
stall tests.
Make sure to check no oil leak after installing oil pressure
gage adapter.
Result of Hydraulic Test Cause of Failure
Higher than standards
both ”D and ”R”
Pressure control solenoid (PCS) failure
Primary regulator valve failure
Lower than standards
both ”D and ”R”
Pressure control solenoid (PCS) failure
Primary regulator valve failure
Oil pump failure
Oil strainer failure (clogging)
Oil leak for each range circuit
Lower than standards
only ”D
”D” hydraulic circuit failure
Forward clutch (C1) failure
Lower than standards
only ”R”
”R” hydraulic circuit failure
Reverse clutch (C3) failure
1st and reverse brake (B3) failure