SPACER 8D3993 - Caterpillar

Engines:
3508 (S/N: 5TL1027-UP; 4ZL1441-UP)
3508B (S/N: BWA188-UP; BTB268-UP; KAM333-UP; BTR505-UP; 5XS1011-UP)
3512 (S/N: 5EL416-UP; 6FL953-UP)
3512B (S/N: SDW358-UP)
3516 (S/N: 6CL637-UP; 7CL2023-UP)
3516B (S/N: KDK208-UP; MSK228-UP; KNS569-UP; 7DS1017-UP; CPW1116-UP)
3524B (S/N: CND430-UP; NPM196-UP)
Description of Change: Engineering changes have been made to build all Reman 3500 Engines with one-piece pistons and eliminate the two-piece pistons from factory builds.Adaptable To: Beginning on 1April 2010 all 3500 Reman Engines consists and bills of materials were changed to utilize the one-piece ( 10R-9270, 10R-4377, and 10R-4342 ) pistons. Previous bills of material allowed for the use of two-piece pistons if the supply of one-piece pistons did not meet the 3500 Engine build schedules. The beginning engine serial numbers for the piston change are listed below. For engine (prefix 7DS) arrangement numbers 0R9551 and 10R-2851 , one-piece pistons were used in production starting with serial number 7DS931-UPon 6April 2009.
Table 1
3500B HD (LS)    
10R9270    
Arrangement #     Effective Serial Number     Date    
0R8668     S/N:CND00430-UP     20May 09    
0R7568     S/N:CPW01116-UP     20May 09    
10R2853     S/N:KDK00208-UP     20May 09    
10R0946     S/N:KNS00569-UP     20May 09    
10R2852     S/N:MSK00228-UP     20May 09    
10R1433
10R1676     S/N:NPM00196-UP     20May 09    
Table 2
3500B (SS)    
10R4342    
Arrangement #     Effective Serial Number     Date    
0R9551
10R2851     S/N:7DS000931-UP     6Apr 09    
0R8555
0R8556
0R8557
0R8842
OR9557
0R9558
0R9845
10R6702     S/N:7DS01017-UP     1Apr 10    
0R8550
0R8551
0R8552
0R8553     S/N:5XS01011-UP     1Apr 10    
0R8554     S/N:6SS00221-UP     1Apr 10    
0R9842     S/N:KAM00333-UP     1Apr 10    
OR9840     S/N:BTB00268-UP     1Apr 10    
0R9841
10R5596     S/N:BTR00505-UP     1Apr 10    
0R9843     S/N:BWA00188-UP     1Apr 10    
0R9844
10R6700     S/N:SDW00358-UP     1Apr 10    
Table 3
3500A (SS)    
10R4377    
Arrangement #     Effective Serial Number     Date    
0R3983
0R9583
0R3959
0R9659     S/N:7CL02023-UP     1Apr 10    
0R3980
0R3981     S/N:5TL01027-UP     1Apr 10    
0R3982     S/N:6FL00953-UP     1Apr 10    
0R3953
0R3954     S/N:6CL00637-UP     1Apr 10    
0R3952     S/N:5EL00416-UP     1Apr 10    
0R3950
0R3951     S/N:4ZL01441-UP     1Apr 10