Robin America EH63, Руководство по обслуживанию

Страница: 65 / 85

– 62 –
• Check the operation of the solenoid independently.
Check operation at the cable(+) and the body(-). (Applied voltage : 8V)
Faulty operation → Replace the solenoid
Terminal
Spring
Diaphragm
Structure of Oil Pressure Switch (Sensor)
Contact
Oil
Pressure
OIL PRESSURE SWITCH
Switching Pressure : 1.0 kg/cm2 ± 0.3
• Inspect the switch action.
• The structure of the oil pressure switch is shown in a right figure.
When there is no pressure (no oil), the diaphragm is pressed
in by the spring, resulting in the contact being ON. If the oil
pressure rises above the switching pressure, the diaphragm is
pressed in by the oil pressure which is greater than the spring
pressure, resulting in the contact being OFF.
When engine is stopped : 0 Ω (continuity)
When engine is running : ∞ ∞ (no continuity)
D
B C
A
REGULATOR
• Measure the resistance between the wires.
Rated resistance value: (
Ω
± 20% when 20˚C)
SOLENOID
(for Fuel Cut Off of Carburetor)
• Measure the resistance between the cable and body (body
earth).( Ω ±10% when 20˚C)
• Replace the regulator if the actual resistance value differs from the rated value.
• As the solenoid is a constant pull-in type when the engine is running, If the battery’s power is low, it may
not work when starting the engine because all the available electricity is occupied by the starting motor.
→ Charge or replace the battery.
Reference: Solenoid pull-in force: 0.3 kg/cm2
• The switch’s structure is complicated, so if its function cannot be recovered even by cleaning, replace the
switch with a new one.
Resistance
38 Ω
Apply black (-) needle of the circuit tester
Apply
red (+)
needle
of the
circuit
tester