Engine Belt Replacement; Power Board Replacement; Video Board Replacement Procedure - Bosch WBE 4120 Instructions De Réparation

11. Proceed with the calibration of gauges (chapter
Calibration menu).
11.5

Engine belt replacement

1. Remove the weights protection;
2. Remove the central centring flange (fig.20, pos.1)
and, once loosened the three screws (fig.20, pos.4)
and the two screws (fig.20, pos.2);
3. Remove the pin cover in fig.20,pos.3 and the side
cover of the motor closing in fig.20, pos. 5;
5
4
2
3
1
Abb. 23:
4. Remove the belt of the motor by loosening the three
side screws (fig.21, pos. 1) and the screw (fig.21,
pos.2) in order to loosen the belt;
Abb. 24: Belt replacement
5. adjust the tension of the belt (by tightening the ad-
justment screw) until it possible to manually rotate
by 90°.
"
Belt tensioning check.
Bosch Automotive Service Solutions GmbH
Replacement interventions | WBE 4120 / WBE 4120 D / WBE 4120 DT | 67
;
11.6

Power board replacement

1. Remove the weights protection;
2. Loosen the 5 rear screws using an allen wrench;
Abb. 25:
3. replace the board and restore connections.
Abb. 26:
11.7

Video board replacement procedure

1. Remove the left and upper protections;
2. replace the board and restore connections;
3. configure the board.
D
E
F
G
3
I
!
The piezo-electric sensors are identical and to dis-
tinguish them, during production, a red pick-up is
assembled on the outside and a black on the inside.
Mark the cables F and G before reconnecting them
to be able to recognise them.
en
L
C
M
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1 695 600 579 2016-08-02