ITW GSE 4400 Tier 4, Manual

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Operation Manual – ITW GSE 4400 Tier 4
b) Basic Engine Adjustments
Adjustment procedures applicable to the diesel engine are included in the engine manufacturer’s
operation manual, which is referenced in Chapter 5. Refer to the engine operation manual for
detailed information on the following engine adjustments.
NOTE: A stroboscope is required for engine idle speed checks.
Engine idle speed (for non-EU engines) is programmed at the factory. If adjustment is required,
contact the local engine distributor. The recommended idle speed is 1000 RPM, +/- 25 RPM.
The speed limiting adjustment is also set and sealed at the Cummins factory. Speed should be
limited to approximately 2350 RPM. If adjustment is required, contact your local engine
distributor.
c) Engine Accessories Adjustment
Alternator and fan belt adjustment: Refer to Section 2-1 and engine manufacturer manual.
4) Generator and Exciter Test
The generator fields and exciter stator may be tested with a Kelvin bridge. This is a double-bridge
type instrument required for the very low resistances encountered in this test. It is understood that
zero (0) resistance indicates a
SHORTCIRCUITED condition. An infinite resistance reading indicates
an OPEN CIRCUITED condition.
a) Disconnect generator stator leads at the back of the unit.
b) Disconnect the two black exciter field leads (Connector J6/P6) that is located under the back right
corner of the unit.
c) Check resistance and compare to values.
Test Connection Resistance (Ohms)
Generator Stator Phase A to N (G1)* 0.0026
Generator Stator Phase B to N (G1)* 0.0026
Generator Stator Phase C to N (G1)* 0.0026
Exciter Stator Field (L2) 29
A - B, B - C, C - A Exciter Armature (G2) 0.041
Generator Revolving Field (L1) 2.1
*NOTE: The two leads of a phase must be connected when the test is made. Take
readings when the unit is cold and in an ambient temperature of 70 ºF (21ºC.).
Figure 2-3-1: Generator and Exciter Test Readings
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