Alternator And Fan Belt Adjustment; Electric Governor System Adjustment - Hobart 6921 Series Operation And Maintenance Manual

OM-2040 / Operation and Maintenance Manual
90D20 / Generator Sets
d. Alternator and fan belt adjustment
Refer to 2-1; Para. 8 for belt adjustment instructions.
NOTE: Replace fan belts with a matched set.
Engine Type
Bore/Stroke
Displacement
Compression Ratio
Maximum Output DIN 6270
Maximum Torque DIN 6270
Min. Idling Speed
Specific Fuel Consumption at
Max. Torque
Rotation
e. Electric Governor System Adjustment
The magnetic pickup and control box have critical adjustments which can affect engine performance
and generator output. Actuator-to-fuel control lever adjustment can also affect engine performance.
WARNING
The engine should be equipped with a separate overspeed (overtemperature, or
overpressure) shutdown device, to protect against runaway or damage to the
engine, with possible personal injury or loss of life should the mechanical
governor, or electric control, actuator, fuel controls, driving mechanism, linkage,
or the controller device fails.
When the complete system is to be checked, and /or adjusted, a definite sequence of procedures
should be followed:
First - Check or adjust actuator linkage.
Second - Check or adjust magnetic pickup.
Third - Check or adjust electric control box
Chapter 2-3
Page 10
6-cylinder turbocharged four cycle air-cooled diesel, direct
injected
4/4.9 in. (102/125 mm)
374 in. 3 (6.12 L)
15.5:1
160 HP @ 2800 RPM (118 KW @ 2800 RPM)
361.3 lbs. ft. @ 1500 RPM (490 NM @ 1500 RPM)
650-700 RPM
.365 lbs. HPh (215 g/KWh)
Counterclockwise (view toward flywheel)
Engine Specifications
Figure 4
February 28/94 Revised