Komatsu BR380JG-1E0, Руководство по ремонту, Страница: 397 / 841

SEN02305-01 30 Testing and adjusting
56
BR380JG-1E0
Preparation work for
troubleshooting for electrical
system
a
When carrying out troubleshooting for an elec-
tric circuit related to the machine monitor,
engine controller, pump controller and
KOMTRAX terminal controller, expose the
related connectors according to the following
procedure.
a
Since the machine monitor, engine and pump
controller and KOMTRAX terminal are installed
inside main panel (1), remove the 7 main panel
mounting screws and open the main panel
first.
1. Machine monitor
Insert or connect test T-adapters to connectors
P01, P02, and P03 of machine monitor (2).
2. Engine controller
1) Open the engine hood.
a
The engine controller is mounted on
the engine.
2) Insert or connect troubleshooting T-adapt-
ers in or to connectors
CE01 , CE02 , and
CE03 of engine controller (3).
a
Connectors CE01 and CE02 are fixed
with screws. When disconnecting
them, loosen the screws.
a
When returning connectors CE01 and
CE02 , tighten the screws to the spec-
ified torque.
3
Screw: 3 ± 1 Nm {0.3 ± 0.1 kgm}
3. Pump controller
Insert or connect test T-adapters to connectors
C01 , C02 , and C03 of pump controller (3).
a
Since the connectors are fixed with
screws, loosen those screws before dis-
connecting the connectors.
a
When returning the connectors, tighten
the screws to the specified torque.
3
Screw: 2.82 Nm {0.288 kgm}