Mitsubishi 6M60-TL, Service Manual

Page: 295 / 330

54-26
Inspection after assembly
Inspection: Performance and pinion gap
• After assembling the starter, perform inspections with current
supplied to it.
WARNING
• When the starter is energized, the pinion will spring out and
rotate. Be careful not to touch it with your hands.
• The magnetic switch may become very hot during inspec-
tions. Be careful when touching it.
CAUTION
• Do not energize the pull-in coil P for longer than 10 sec-
onds, and do not energize the holding coil H for longer than
30 seconds. If these periods are exceeded, the coils may
overheat and burn out.
• When current is supplied to the starter, a large current (100
A or higher) will flow. For inspection purposes, booster ca-
bles or similarly thick cables must therefore be used. Also,
it is important to ensure that all connections are secure.
(1) Performance test
• Connect the starter as illustrated.
• Set the voltage to 23 Volts DC.
CAUTION
• The voltage applied must not exceed 24 V.
• The following operations are performed with current supplied to
the starter. Thus, the entire test (consisting of measurement of
the current flowing through the starter and measurement of the
starter’s rotational speed) must be completed within 30 seconds.
•
Turn ON the switch to supply current to the starter. The pinion
will spring out and rotate.
CAUTION
• When the switch is turned ON, the pull-in coil P and holding
coil H are both energized. When the large current from the
DC power supply flows from terminal B to terminal M, the
supply of current to the pull-in coil P is cut; only the holding
coil H remains energized. To prevent the holding coil from
burning out, it is essential to complete all operations within
30 seconds.
• Measure the current and the starter’s rotational speed. To
measure the rotational speed, shine a stroboscope on the pin-
ion.
• Turn OFF the switch to de-energize the starter.
• If either measurement is out of specification, disassemble and
inspect the starter again.
#930 STARTER