Bosch EPS 708 - 4.6 Connecting the Common Rail Pump

1 689 989 067 2017-12-08| Robert Bosch GmbH
48 | EPS 708 | Operationen
4.6 Connecting the common rail pump
Pump
over
Flow-Oil
Pump
Supply
X 24
ZME/EAV
X 25
Rail DRV
X 26
Rail Press
1
4
3
2
7
6
458846-12_
Ko
8
5
Fig. 11: Common rail pump connection
1 Hose (calibrating oil supply)
2 Hose (calibrating oil supply)
3 High-pressure hose
1)
1 680 712 324
4 Test pressure line
1)
1 680 750 123
5 High-pressure hose connection for CRI 846H rail
6 X24 connecting cable 1 684 463 946
7 Adapter cable
8 Common rail pump
1)
Parts set 1 687 016 064
1. Connect the hoses for the calibrating oil supply
(fig.11, pos. 1) and return (fig. 11, pos. 2) to the
connections of the common rail pump provided for
this purpose (fig. 11, pos. 8).
i For CP3.4 with the required return pressure < 10
kPa connect hose line (fig. 2, pos. 12).
i Before connecting the high-pressure hose, clean the
sealing taper and sealing cone on the high-pressure
rail and high-pressure pump.
2. Connect the high-pressure hose 1680712324 (fig. 11,
pos. 3) to the high-pressure inlet of the high-pressure
rail, and use the test pressure line 1680750123
(fig.11, pos.4) to connect to the high-pressure
connection of the common rail pump (tightening torque
= 25Nm – 30 Nm).
3. Connect X24 connecting cable 1684463946
(fig.11, item6) to X24 at EPS 708 and via the
adapter cables 1 684 460 255 or 1684460256
(fig. 11, item 7) to the electrical connection of the
common-rail pump.
4. Seal the connection for connecting the high-
pressure hose to the CRI 846H rail (fig. 11, pos. 5)
with a dummy plug.
" The common rail pump is now hydraulically and
electrically connected.