154
CONTROL UNIT
10a
Disassembly and reassembly
10a-2.
Remove "fitting bolts" (*1) to remove the rear cover.
1.
Remove "fitting bolts" (*2) to "bracket, cover".
2.
Remove the control unit with following procedure.
1. Disconnect wires on the control unit.
3.
2. Remove "fitting nuts" (*3) for the control unit to remove
the control unit.
CAUTION
l
Apply wheel chocks to tyres to prevent the
truck from moving.
l
Be sure to disconnect the battery plug.
l
Record places of lead wire connections before
disassembling.
10a-2-1. Control unit - removal and installation
Stamped mark on the ring terminal (at the end of
each cable) means followings.
Mark
Connected to
+
Battery (+), Control unit (+)
-
Battery (-), Control unit (-)
T
+
Transformer (+)
T -
Transformer (-)
U1,V1,W1
Each phase for
Travel control unit and motor
U2,V2,W2
Each phase for
Hydraulic control unit and motor
F
Fuse
NOTE
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