PUMP GP-ENGINE OIL 1958435 - Caterpillar

Illustration 1 g01603234
Section view of piston (1) 298-0306 Cover Plate
The 282-0644 Piston has been cancelled and replaced by the 314-5005 Piston .
The 278-0247 Piston has been cancelled and replaced by the 299-5204 Piston .The former parts and the new parts are listed in Table 1.
Table 1
Former Parts and New Parts    
Piston and Rod Gp     Former Part     New Part    
282-0645 Piston and Rod Gp     282-0644 Piston     314-5005 Piston    
281-6139 Piston and Rod Gp     278-0247 Piston     299-5204 Piston    
The new pistons are adaptable to all 3500 Machine Engines. Serial number effectivity is listed in Table 2.
Table 2
Serial Number Effectivity    
Model     Serial Number    
785C     S/N:APX01524-UP    
789C     S/N:2BW01402-UP