ALTERNATOR GP-CHARGING 3271023 - Caterpillar

Table 1
Required Tools    
Part Number    Description    Qty    
5P-3277     Measuring Tape     1    
    Stopwatch     1    
Illustration 1 g00865223
Position the machine on level ground. Fully extend the stick and bucket cylinders. Refer to Illustration 1.
Stop the engine.
Illustration 2 g00293972
(A) Upper frame (B) Undercarriage frame (C) Marking
To indicate the relationship of the two positions, put a mark (C) on the inner race and the outer race of the swing bearing. The mark will be used as a target to stop the swing operation. Refer to Illustration 2.
The bucket should be empty.
Move the swing joystick in either direction until the machine completes a 180 degree swing operation away from the target.
Move the swing joystick in either direction until the machine completes a 180 degree swing operation toward the target. Return the swing joystick to the NEUTRAL position at the target.
Measure the amount of overswing by measuring the distance between the marks on the swing bearing. Refer to Illustration 2.Note: Use a point that is visible from the operator seat as a reference point for the target.
Table 2
Overswing    
Item    New    Rebuild    
Right Swing    
1000 mm (39 inches) or less    
1150 mm (45 inches) or less    
Left Swing    
Move the swing joystick in each direction and measure the time that is required to complete a 180 degree swing operation.
Table 3
Swing Time (Seconds)    
Item    New    Rebuild    
Right Swing     6.4 or less     7.4 or less    
Left Swing