Bosch EPS 708 Repair Instructions page 73

6.38.2 Fitting pressure sensor B4
1. Lubricate O-ring on the new pressure sensor with
test oil.
2. Push pressure sensor into sensor block.
3. Fasten pressure sensor with fastening screws (2x)
and washers (2x).
Tightening torque: 5 +1 Nm
4. Connect connection cable to pressure sensor B4.
5. Fasten cover on the hydraulics chamber
(see Fig. 7, item 1).
6. See section 10.2 to perform zero point adjustment
for pressure sensors.
7. See section 6.38.3 to perform temperature adjust-
ment (only with retrofit kit CP4).
6.38.3 Adjusting temperature sensors
1. Switch on the EPS 708 at the master switch.
2. Start the EPS945 system software.
 The software performs initialization
3. In the "Injection component test main menu" start
screen, select <F7>.
 A password request appears.
4. Enter the password in the input line:
5. Confirm your entry with <F12>.
6. Select menu item "Calibration >> Delta tempera-
ture".
7. Continue with <F12>.
8. Connect the test oil supply connection via hose
assembly 1 680 712 363 (Fig. 139, item 1) with test
oil return connection of the EPS 708.
X 2 2
Fig. 139: EPS 708 with hose assembly 1 680 712 363
Robert Bosch GmbH
9. Close the protective cover.
10. Set pump supply pressure with <F3> or <F4> to
20 kPa.
11. Set pump return pressure with <F3> or <F4> to
20 kPa.
12. Start low-pressure control with <F8>.
 Pump supply and return pressure is started.
13. Check the actual values listed in the EPS 945 soft-
ware for the temperature difference of the pump
supply and return.
14. As soon as the temperature difference for the pump
supply and return has reached the desired value (set
to 40°), select <F2>.
 The temperature sensors were adjusted.
15. Press <F8>.
16. Exit the configuration menu by pressing Esc twice.
"
This completes the temperature adjustment.
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Repair | EPS 708 | 73
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1 689 975 233 2018-05-08
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