Bosch 0 986 612 950 Manual Original página 13

The maximum allowed return quantity is 3
times as much as the smallest return quan-
tity measured.
14. Replace injectors with a return quantity that is
too large.
15. Empty the graduated measuring cylinders
"Emptying the graduated measuring
3.2 Checking the injector return quanti-
ty with the starter cranking (engine
does not start)
1. Position the 0 986 612 950 horizontally and se-
curely in the engine compartment.
2. With the aid of a second person, secure the
0 986 612 950 against falling over in the en-
gine compartment.
3. Press the retaining clamp at the connection
point of the return lines in order to detach the
return lines from the injectors.
4. Seal off the return lines with plugs or clamps.
 No fuel can emerge from the return lines.
5. Check whether the plug connectors of the
0 986 612 950 can be attached to the return of
the injectors.
With some injectors, the plug connectors of
the 0 986 612 950 cannot be attached to
the return. Adapter hose assemblies are
needed for connection.
6. Attach the plug connectors of the
0 986 612 950 directly to the return of the in-
jectors.
7. If direct connection is not possible, attach the
plug connectors of the 0 986 612 950 to the
adapter hose assemblies and attach the adapt-
er hose assemblies to the return of the injec-
tors.
1
 6: Attaching the plug connector to the adapter hose as-
sembly
(1) Plug connector of 0 986 612 950
(2) Suitable adapter hose assembly
8. Actuate the starter for between 10 s and 15 s.
9. Disconnect plug connectors (or adapter hose
assemblies) from the injectors.
10. Place the plug connectors in the openings of
the graduated measuring cylinder connector
cap .
10(2)

Robert Bosch GmbH
11. Position the 0 986 612 950 horizontally and
compare the return quantities in the graduated
measuring cylinders.
The maximum allowed return quantity is 3
times as much as the smallest return quan-
tity measured.
 13
cylinders".
12. Replace injectors with a return quantity that is
too large.
13. Empty the graduated measuring cylinders
"Emptying the graduated measuring
3.3 Emptying the graduated measuring
cylinders
 WARNING - Danger of injury from aggressive
gases and substances.
1. Wear safety gloves.
2. Prepare a sufficiently large container for the
amount of fuel in the 0 986 612 950.
3. Position the 0 986 612 950 horizontally and se-
curely.
4. Hold the hose assembly of the graduated
measuring cylinder to be emptied with the
plug connector
 7: Holding the plug connector upward
(1) Plug connector
(2) Quick-release coupling on the plug connector
(3) Hose assembly
458919_03_shd
5. Press the quick-release coupling on the plug
2
connector
6. Pull the hose assembly
Operation |
0 986 612 950
facing up.
7(1)

1
2
3
upward.
7(2)

7(3)

0 986 629 001 | 2018-02-28
| 13 | en
 13
cylinders".
downward.