Preparation Work For Troubleshooting For Electric System - Komatsu PC130-7 Shop Manual

TESTING AND ADJUSTING
PREPARATION WORK FOR
TROUBLESHOOTING FOR
ELECTRIC SYSTEM
a When carrying out troubleshooting for an electric
circuit related to the monitor panel and governor
and pump controller, expose the related connec-
tors according to the following procedure.
1. Monitor panel
1) Remove cover (1)
a The cover is fixed with 2 clips at the top
and bottom. Just pull it up to remove it.
a If the daylight sensor of the air condi-
tioner is installed, disconnect connector
P15 on the back side of the cover.
2) Remove the 3 mounting screws, and then
remove monitor panel (2) from the mount.
a Take care not to drop the mounting
screws into the console.
3) Insert or connect testing T-adapters in or to
connectors P01 and P02 of the monitor
panel.
a Connector P70 clamped near the above
connectors is not used.
20-166
(1)
PREPARATION WORK FOR TROUBLESHOOTING FOR
2. Governor and pump controller
a The governor and pump controller is installed
in the cover at the rear of the operator's seat.
1) Remove the 3 mounting bolts and cover (3).
2) Insert or connect testing T-adapters in or to
connectors C01, C02, and C03 of governor
and pump controller (4).
a Since the connectors are secured with
screws, loosen those screws before dis-
connecting.
a When connecting the connectors again,
tighten their screws to the specified
torque.
3 Screw: 2.82 Nm {0.288 kgm}
ELECTRIC SYSTEM
PC130-7