EXTENSION 2431679 - Caterpillar

Table 1
Part Number    Description    Qty    Replaces    Qty    
320-8514     Bogie Gp     1     258-3141     1    
320-8515     Bogie Suspension Gp     1     258-3140     1    
Illustration 1 g01953668
Old Bogie Group
Illustration 2 g01953669
New Bogie Group
Illustration 3 g01953702
Effectivity for this change can be identified by finding the serial numbers for the undercarriage that are located on the top of each roller frame. Refer to Illustration 3. Serial number effectivity for the undercarriage is shown in Table 2.
Table 2
Effective Serial Number Range of the Undercarriage for this Change    
Serial Number for the Undercarriage S/N:1SP     Serial Number of the Undercarriage S/N:2SP    
UDL1B003726     UDL2B004783    Approximate serial number breaks for the machines are shown in Table 3.
Table 3
Model    Serial Number S/N:1SP    Serial Number S/N:2SP    
277C     (S/N: JWF2141)     (S/N: JWF2001)    
287C     (S/N: MAS1730)     (S/N: MAS1797)    
297C     (S/N: GCP1470)     (S/N: GCP1536)