Test Procedure For Checking For Diesel Leaks From The Common Rail System - Iveco VECTOR Series Technical And Repair Manual

VECTOR 8 ENGINES
Figure 84
- Tighten the connectors for the pipes from the HPP to
the rails (V1.1 and V2.1) to the interface with the HPP
to torque checking that the pipes are kept in a horizontal
position and are flat. Apply a tightening torque of 140
+ 5 Nm.
- Tighten the connectors (V1.2 and V2.2) to the interface
with the rails checking that the pipes are kept in a
horizontal position and are flat in order to ensure the
seal between the contact surfaces. Apply a tightening
torque of 130 + 5 Nm.
- Tighten the connectors for the V3 pipe to a torque of
130 + 5 Nm in total for both parts.Check the horizontal
alignment of the pipe.
- Tighten the injector/rail connecting pipes to the
interface with the common rails in the following order:
J 8.2 - J 7.2 - J 6.2 - J 5.2 - J 4.2 - J 3.2 - J2.2 - J1.2. During
this fitting procedure the flow limiters should be kept
against the tightening direction.Apply a torque of 115 +
5 Nm.
- Tighten the connectors for the injector/rail connecting
pipes to the interface with the injectors in the following
order: J 8.1 - J 7.1 - J 6.1 - J 5.1 - J 4.1 - J 3.1 - J 2.1 - J
1.1.During this fitting procedure the injectors should be
kept against the tightening direction.Apply a torque of
95 + 5Nm.
- Tighten all the bolts for the common rail supports to the
caps (bolts (B)) to the recommended torque of 25 Nm.
- Any leaks are checked when the engine is switched on.
Print P2D32V001E
SECTION 3 - INDUSTRIAL APPLICATION
Test procedure for checking for diesel leaks
from the Common Rail system.
The following procedure is carried out on the engine to
check that there are no diesel leaks from the Common Rail
system after repair operations.
The aim of this test is to let the rail pressure reach maximum
values with the engine running in no load idling conditions.
Equipment to be used: IST or ELTRAC tool
Order of operations:
1) Switch on the engine and let it reach idle speed.
2) Key in the DIAGNOSTICS window on the IST
3) Select DIAGNOSTIC TESTS
4) Select FUEL RAIL PRESSURE TEST
5) Key in START at the bottom
6) Key in STEP UP several time up to 150-160 Mpa with the
engine idling.
7) Check that there are no leaks from all the connectors.
If a leak is detected, switch off the engine and carry out the
procedures describe previously.
8) Return to the nominal pressure using the STEP DOWN
button.
9) When running in the engine, check the tightening
torques of all fittings at least once and adjust. The aim of this
operation is to tighten any fittings that have become loose
due to settlement. Do not unscrew any fittings but simply
tighten to the specified installation torque. After running in
the engine, tighten all the fittings to the specified torques
using a torque wrench. Check the remaining torques as
indicated in the installation procedure.
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103480
Base - April 2006