777 SERVICE MANUAL HYDRAULIC SYSTEM
Manitowoc Published 10-01-2012, Control # 045-08 2-17
2
SHOP PROCEDURE
This topic covers hydraulic adjustments for the hydraulic
system and related components on the 777 crane.
Experienced technicians, trained in the operation of this
crane and its hydraulic system, shall perform the procedures
in this topic. These technicians shall read, understand, and
comply with the instructions in this topic.
All adjustments identified in this topic were made to the
crane before it was shipped from the factory. Adjustments by
field personnel are required only when parts are replaced or
when instructed by the factory Service Department.
Comply with the pressure and flow settings specified in this
topic. Altering settings without the approval of the factory
Service Department can damage crane components or
cause the crane to operate improperly. Procedures for
connecting hydraulic fittings are provided in Hydraulic
System Maintenance in this section.
During some procedures described in this topic, it will be
necessary to monitor data on the diagnostic screens of the
digital display. See Diagnostic Display in Section 10 of this
manual, for descriptions and operation of the diagnostic
screens.
When a procedure states determine cause and correct,
proceed as follows:
• MCC Assembly Personnel — contact Engineering
Department.
• Field Service Personnel — contact Factory Service
Department.
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