Repair And Service; General Information; Service Information - Mercury MerCruiser D2.8L D-Tronic Service Manual

INJECTION PUMP

Repair and Service

General Information

The Robert Bosch Corporation has a network of authorized Bosch Service Dealers
throughout the world to service their products.
The electronically controlled EDI pump and injectors must be sent to an authorized Bosch
Service Center.
When shipping an injection pump to a service center for adjustments or repairs, the fuel
return line hollow bolt must accompany the unit. The hollow bolt incorporates a sized orifice
(is calibrated) for proper pressure which is matched to the pump. The pump cannot be
properly adjusted without the matched orifice.
Contact the Bosch distributor nearest you for the location of an authorized Bosch Service
Center.

Service Information

It is required that you observe the following procedural information when working on EDI
equipped engines:
•
Before removing any ECM system component, disconnect the negative battery
cable.
•
Never start the engine without the battery cable terminal ends being solidly
connected.
•
Never separate the battery from the on-board electrical system while the engine is
operating.
•
Never separate the battery feed wire from the charging system while the engine is
operating.
•
When charging the battery, disconnect it from the boat's electrical system.
•
Ensure that all cable harnesses are connected solidly and that battery connections
are thoroughly clean.
•
Never connect or disconnect the wiring harness at the ECM when the ignition is
switched ON.
•
Before attempting any electric arc welding, disconnect the battery leads and the
ECM connectors.
•
When steam cleaning engines, Do NOT direct the steam cleaning nozzle at ECM
system components. If this happens, corrosion of the terminals or damage of
components can take place.
•
Use only the test equipment specified in the diagnostic charts, since other test
equipment may either give incorrect results or damage good components.
•
All voltage measurements using a voltmeter require a digital voltmeter with a rating
of 10 megohms input impedance.
Page 5D-8
SERVICE MANUAL NUMBER 22
90-860074--1 FEBRUARY 2002