GROVE Published 10-21-2010, Control# 198-04 6-1
5540F/YB5515 SERVICE MANUAL ENGINE AND ENGINE SYSTEMS
SECTION 6
ENGINE AND ENGINE SYSTEMS
GENERAL
These instructions are written for worldwide use. In territories
where legal requirements govern engine smoke emissions,
noise, safety factors, etc., then all instructions, data and
dimensions given must be applied in such a way that, after
maintaining or repairing the engine, it does not contravene
regulations when in use.
NOTE: These instructions cover only the routine
maintenance of the engine. See the engine manual
furnished with the crane for engine diagnosis,
repair and component replacement.
ENGINE TYPES
Two and four wheel drive units use a Cummins 4B3.3 turbo-
charged diesel engine.
ENGINE PERFORMANCE
Engine performance is very important to the operation of the
crane, The engine is the drive for the hydraulic pump, which
supplies power to operate the work functions of the crane.
For maximum power the engine must be kept in good
working condition.
ENGINE RPM
To check the engine speed, follow the instructions in the
engine operator’s manual. Maximum and minimum speeds
are controlled by a governor installed on the engine. The
throttle gives variable control of the engine speed within the
limits set by the governor.
GOVERNOR
The governor is preset at the factory and is very unlikely that
it should ever have to be adjusted.
NOTE: On units with a diesel engine, restrictions or wrong
adjustment of the throttle linkage can be a possible
cause of wrong engine rpm. Make sure the throttle
linkage moves the engine throttle lever through a
full stroke. If necessary, disconnect the throttle
linkage and move the throttle by hand. Check the
engine speed with the throttle linkage disconnected
and compare results.
ENGINE CRANKCASE SYSTEM
The engine crankcase system must be well lubricated to
inhibit damage to the engine. The correct type of oil must be
used, as well as proper maintenance at regular intervals. For
correct intervals, see Preventative Maintenance, page 1.
Crankcase Oil Data
Use oil viscosity based upon the expected air temperature
range during the period between oil changes.
Diesel Engine
Oil Performance Recommendations
CC/SF for use in naturally aspirated engines and in engines
that operate in light duty service including standby and
emergency operation (equivalent to MIL-L-2104B).
Sulfated Ash Limit of 1.85% by weight is recommended.
Oils with higher ash count may produce deposits on valves
that can progress to guttering and valve burning.
Do not use “break-in” lubricating oils in new or rebuilt
engines. Only use lubricating oils specified for normal engine
operation.
Oil Viscosity Recommendations
The use of a multigrade lubricating oil improves oil
consumption control and improves engine cranking in cold
temperatures while maintaining lubrication at high operating
temperatures. A multigrade oil is therefore recommended
with the viscosity grades shown in the Figure 6-1. The use of
single grade lubricating oils is not recommended, except for
synthetic oils used in Arctic conditions.
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