6.0 Product Handling - Delphi Multec 3.5 Applications Manual

Multec 3.5 Fuel Injector Application Manual
Table 6.1 — MULTEC 3.5 FUEL INJECTOR HANDLING
ACTION
DO NOT: Re-use injector seal rings if at all possible. If no other
choice exists, take extra care in inspecting the seal rings for
damage.
DO NOT: Interchange seal rings from Multec 1, Multec 2 and
Multec 3.5 injectors. Use proper seal ring specified in parts listing
for the application.
DO: Take extra care when installing new fuel seal ring over
injector inlet flange. See Figure 6-1.
DO: Use proper lubricants on seal ring surfaces to install injector
in engine. Minimize time between applying lubricant and
inserting injector / rail.
DO NOT: Dip injector tips into lubricants.
DO NOT: Apply voltage greater than 15V for testing. (Limit
duration to 30 sec maximum while flowing fuel, or 10 sec max
without flow).
DO NOT: Cycle injector repeatedly without fuel pressure.
DO: Pulse (actuate) stuck closed or tip-leak suspected injector
(Actuate consists of one pulse <5 sec duration at 9 to 15V).
DO NOT: Pulse (actuate) a suspected high leak rate injector (leak
>50 sccm air).
DO: Pulse (actuate) injectors prior to a dry fuel system leak test at
engine/vehicle assembly to reseat injector valves.
DO NOT: Use "snoop" or equivalent, to leak check injector.
DO NOT: Allow water to enter fuel system from air lines, etc.
during leak checks.
DO: Avoid any liquid contamination in the injector area.
DO NOT: Use any Dupanol or any material containing water on
fittings on any area that could cause water to travel into the
injector
Delphi Energy and Chassis Systems
The purpose of this section is to become familiar with the Delphi
recommended handling procedures for the Multec 3.5 Fuel Injector.
These recommendations cover storage practices and all handling that may
occur from the time the injector enters until it leaves the customer's plant.
Use this information as a guide for product handling.
Table 6-1 lists recommendations for handling the Multec 3.5 Fuel Injector.

6.0 Product Handling

REASON
Leakage.
Seal rings are not the same size and are not
interchangeable. Improper seal ring usage could result
in fuel leakage.
Prevent tearing seal ring during installation.
See section 6.5 for recommended lubricants.
Avoid damage to seal ring during installation.
Avoid contamination at seal.
Can plug injector spray orifices.
Damage to solenoid could occur.
Damage to internal mechanical components.
To verify the injector failure (See section 3.11).
Can dislodge internal contamination if present and
preclude root cause analysis.
Injector valves may not reseat without fuel after shipping
and handling resulting in false leakage.
Can cause soap deposits on injector. Use Stoddard
solvent or Delphi approved equivalent.
Can damage injectors.
Coil could short circuit.
Can cause injector to rust or stick.
Product Handling
Revision: 11/05-1 6-1