Toyota Hilux Surf 1993 Owner's Manual page 776

SR–44
STEERING – Power Steering (On–Vehicle Inspection)
(d) Apply battery positive voltage to the solenoid.
NOTICE:
Do not apply voltage more than 30 seconds to
•
avoid burning out the solenoid.
If repeating this step, wait until the solenoid cools
•
down enough that it can be touched by hand.
(e) Check the oil pressure.
(Reference)
Maximum pressure: Approx. 3,923 kPa
If pressure is high, check the solenoid.
(f) Connect the solenoid connector and check the oil
pressure.
Minimum pressure:
3VZ Engine 7,845 kPa (80 kgf/cm
Ex. 3VZ Engine 7,355 kPa (75 kgf/cm
If pressure is low, the progressive power steering system
is faulty.
9. MEASURE STEERING EFFORT
[Standard type power steering]
(a) Center the steering wheel and run the engine at idle.
(b) Using a spring scale, measure the steering effort in
both directions.
Maximum steering effort: 39 N (4 kgf, 8.8 lbf)
If steering effort is excessive, repair the power steering
unit.
HINT: Be sure to consider the tire type, pressure and
contact surface before making your diagnosis.
[Progressive power steering]
(a) Center the steering wheel and run the engine at idle.
(b) Using a spring scale, measure the steering effort in
both directions.
Maximum steering effort: 29 N (3 kgf, 6.6 lbf)
If steering effort is excessive, repair the power steering
unit.
(c) Apply battery positive voltage to the solenoid.
NOTICE:
Do not apply voltage more than 30 seconds to
•
avoid burning out the solenoid.
If repeating this step, wait until the solenoid cools
•
down enough that it can be touched by hand.
(d) Check that the steering effort is heavier than it was
before battery positive voltage was applied to the
solenoid.
(Reference)
Maximum steering effort: 118 N (12 kgf, 26 lbf )
(e) If steering effort is not heavier, check the solenoid.
HINT: Be sure to consider tire type, pressure and con–
tact surface before making your diagnosis.
2
(40 kgf/cm , 569 psi. )
2
, 1,138 psi)
2
, 1,067 psi)