jcb 1THT, Руководство по обслуживанию

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15 - Engine
75 - Starter Motor
00 - General
15 - 105 9813/5200-2 15 - 105
Figure 112.
A Starter main terminal
B Starter earth connection
C Solenoid terminal
D Start relay feed
E Start relay switched output
H Battery positive and solenoid connection
4.1. If the reading is less than specified, connect
the multimeter between the start relay feed
and earth.
4.2. A faulty start relay or a fault in the feed to
the relay solenoid is indicated if the voltage
increases to
Voltage: 8 V
Voltage: 16 V
4.3. Check also the solenoid earth connection.
The fault must be in either the starter switch
or in the wiring between the solenoid, starter
switch, and the start relay, if the reading
between terminal and earth is less than
Voltage: 8 V
Voltage: 16 V
5. Connect the multimeter between battery
negative and starter earth connection. The
reading in the start position should be practically
zero, maximum permissible reading
Voltage: 0.25 V
Figure 113.
B Starter earth connection
5.1. If the reading is above the maximum
permissible voltage, a high resistance in the
earth lead or connections is indicated.
6. Connect the voltmeter between battery positive
and the starter main terminal. With the starter
switch off, the voltmeter should indicate battery
voltage, but it should fall to practically zero when
the switch is turned to the on position, maximum
permissible reading
Voltage: 0.25 V
Figure 114.
A Starter main terminal
7. If the reading is above the maximum permissible
voltage, a high resistance is present in the
insulated lead or in the solenoid. Connect the
multimeter between the battery positive and
solenoid connection. If the multimeter now reads
zero with the switch closed, the fault is in the
solenoid.
Figure 115.
H
Battery positive and solenoid connection
8. Finally install the engine stop fuse.