2
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105
42hW-201601
CHAPTER 2 ENGINE3015R(h)/3515R(h)/4015R(h)/F36R(h)/F42R(h) TRACTOR
Don’t connect continuously more than 10
second.
•
CAUTION
Don’t connect continuously more than 10
second.
•
CAUTION
2
The case which connects battery between S-M
terminal, if plunger comes in and the pinion comes
out, the pull in winding is normality. If the pinion
does not come out, replace the magnetic switch.
PULL IN COIL TEST OF MAGNETIC
SWITCH(SOLENOID)
▶
Until stopper pulls out the pinion by manual in the
condition which connects bet ween M terminal
of magnetic switch and body. If pinion returns
immediately when taking off hand, both coils are
normality.
MAGNETIC SWITCH RETURN TEST
▶
ACTUAL STATE CAUSE
Electric current is large
current and number of
rotation is low.
(Neither torque is much
strong)
- Stain of metal, oil
contamination
- Wear the pole peace of
armature core
- Short of armature
Electric current is large
current and doesn’t
rotate at all.
- Earth of electronic switch
-
Earth of armature coil, eld coil
- Seizure of metal
Electric current does
not ow and does not
rotate.
- Disconnection of armature coil,
eld coil
- Disconnection of brush, pigtail
- Contamination of armature,
connection defect between
brush and armature by
Highmica etc,.
Electric current is small
current and number of
rotation is low.
(Neither the torque is
much strong)
- Connection defect of eld
coil contact part (If shunt
coil is disconnected or
connection defect, rotation
degree is also high)
Electric current is large
current and number of
rotation is high.
- Short of eld coil
K20W2A65
Battery 12V
Starter
Dis-connector
K20W2A64
Battery 12V
Starter
Dis-connector
1. Connect the starter motor, battery, voltmeter,
ammeter and variable resistance as picture.
2. If rotated when you switch to ON after making
the variable resistance with the maximum, starter
motor is normality. Rheostat adjusts to 11V in
voltmeter. And if current and number of rotation
are other case in regulation, presumes the cause
of breakdown base on next table and repair it.
NO-LOAD TEST
▶
K25W2A13A
Battery
12V
Starter
Potentiometer
Ammeter
Voltmeter
A
V
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