ENGINE AR 2540120 - Caterpillar

Caterpillar Products: All
3500B EnginesDescription of Change:
Illustration 1 g01082028
Valve lifter assembly (1) Lifter body (2) Lifter roller
Illustration 2 g01082029
Injector lifter assembly (1) Lifter body (2) Lifter rollerEngines are now built with semi-crowned lifter rollers. Semi-crowned rollers significantly reduce the stress on each lobe of the cam.Adaptable To: All 3500B commercial engines are now built with semi-crowned rollers in the injector and valve lifter assemblies. All 3500B engines must now use the new parts. Refer to the part numbers for the lifter assemblies in Table 1.
Table 1
Part     New Part Number     Cancelled Part Number    
Injector Lifter As     197-7004     192-8747    
10R1349 0R1368    
Valve Lifter As     230-7875     192-8746    
229-5490
10R1903 0R1350    
10R1505 Tables 2, 3 and 4 list the effectivity of the new lifter assemblies.
Table 2
Effective Serial Numbers    
3508    
S/N:1FZ02132    
S/N:1TW00359    
S/N:2MB00188    
S/N:2HW00263    
S/N:3DM00478    
S/N:3DW00178    
S/N:4GM00743    
S/N:5PS00321    
S/N:6PN00886    
S/N:7SM00977    
S/N:BPX00101    
S/N:CBB00213    
S/N:CTC00256    
S/N:2SB00108    
S/N:2SD00104    
S/N:2SE00130    
Table 3
Effective Serial Numbers    
3512    
S/N:1GZ01825    
S/N:1PW00440    
S/N:2AF00389    
S/N:2EZ00356    
S/N:2GW00420    
S/N:3HD00279    
S/N:3KD00279    
S/N:3ZW00557    
S/N:4AW00873    
S/N:4TN00828    
S/N:5AW00137    
S/N:6WN00803    
S/N:7HM00270    
S/N:8DF00187    
S/N:8EM00527    
S/N:8RM00759    
S/N:BRC00158    
S/N:BRN00195    
S/N:CTB00190    
S/N:CTH00279    
S/N:PWG00117    
S/N:2SH00111    
S/N:2SJ00112    
S/N:2SK00106    
S/N:2SL00140    
S/N:2SM00104    
Table 4
Effective Serial Numbers    
3516    
S/N:1HZ02645    
S/N:1NW00145    
S/N:2FW00338    
S/N:2JW00412    
S/N:3CW00258    
S/N:4BW00571    
S/N:6HN01720    
S/N:7RN01953    
S/N:8CN00212    
S/N:8KN00579    
S/N:9AN00373    
S/N:9WF00118    
S/N:BCK00284    
S/N:CAN00111    
S/N:CBN00322    
S/N:CDE00313    
S/N:CTA00153    
S/N:CTG00287    
S/N:CTJ00200    
S/N:S2S00106    
S/N:S2X00117    
S/N:S2Y00104