Delphi Multec 3.5 User Manual

Multec 3.5 Fuel Injector Application Manual Product Handling
Delphi Energy and Chassis Systems
Revision: 11/05-1 6-1
6.0 Product Handling
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.
Table 6.1 — MULTEC 3.5 FUEL INJECTOR HANDLING
ACTION REASON
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.
Leakage.
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.
Seal rings are not the same size and are not
interchangeable. Improper seal ring usage could result
in fuel leakage.
DO: Take extra care when installing new fuel seal ring over
injector inlet flange. See Figure 6-1.
Prevent tearing seal ring during installation.
DO: Use proper lubricants on seal ring surfaces to install injector
in engine. Minimize time between applying lubricant and
inserting injector / rail.
See section 6.5 for recommended lubricants.
Avoid damage to seal ring during installation.
Avoid contamination at seal.
DO NOT: Dip injector tips into lubricants.
Can plug injector spray orifices.
DO NOT: Apply voltage greater than 15V for testing. (Limit
duration to 30 sec maximum while flowing fuel, or 10 sec max
without flow).
Damage to solenoid could occur.
DO NOT: Cycle injector repeatedly without fuel pressure.
Damage to internal mechanical components.
DO: Pulse (actuate) stuck closed or tip-leak suspected injector
(Actuate consists of one pulse <5 sec duration at 9 to 15V).
To verify the injector failure (See section 3.11).
DO NOT: Pulse (actuate) a suspected high leak rate injector (leak
>50 sccm air).
Can dislodge internal contamination if present and
preclude root cause analysis.
DO: Pulse (actuate) injectors prior to a dry fuel system leak test at
engine/vehicle assembly to reseat injector valves.
Injector valves may not reseat without fuel after shipping
and handling resulting in false leakage.
DO NOT: Use “snoop” or equivalent, to leak check injector.
Can cause soap deposits on injector. Use Stoddard
solvent or Delphi approved equivalent.
DO NOT: Allow water to enter fuel system from air lines, etc.
during leak checks.
Can damage injectors.
DO: Avoid any liquid contamination in the injector area.
Coil could short circuit.
DO NOT: Use any Dupanol or any material containing water on
fittings on any area that could cause water to travel into the
injector
Can cause injector to rust or stick.

Delphi Multec 3.5 Specifications

General

Brand	Delphi
Model	Multec 3.5
Category	Laboratory Equipment
Language	English