RING-RETAINING 3S6931 - Caterpillar

Engine: C11 All C13 and C-13 AllIntroduction
Do not perform any procedure in this Special Instruction until you read this information and you understand this information. Certain combinations of connecting rods in C13 Engines are causing engine vibration. The vibration is occurring when an engine has a mixed set of weight matched rods. This Special Instruction explains the correct combinations of connecting rods that can be used together.Note: C11 Engines do not experience vibration issues due to differences in connecting rod weight.Remanufactured Connecting Rod Nomenclature
Illustration 1 g02789667
(A) Location of the connecting rod part number and the change level (1) Reman 10R-7989 Connecting Rod As (2) Reman 20R-0486 Connecting Rod As (3) Reman 10R-2789 Connecting Rod As (4) Reman 10R-4300 Connecting Rod As
Table 1
More Reman Connecting Rod Details    
(1) Reman 10R-7989 Connecting Rod As.     (2) Reman 20R-0486 Connecting Rod As.     (3) Reman 10R-2789 Connecting Rod As.     (4) Reman 10R-4300 Connecting Rod As.    
C13 conventional split     Reman C13 weight reduced conventional split     C13 conventional split     C13 fractured split    
Mass = 4.636 kg (10.221 lb)     Mass =
4.46 kg (9.8331 lb)     Mass =
4.46 kg (9.8331 lb)     Mass =
4.532 kg (9.991 lb)    
160-8229 Connecting Rod     160-8229 Connecting Rod     160-8229 Connecting Rod     223-9150 Connecting Rod    
Change level 00 to 04     Change level 00 to 04     Change level 05 to 06     Change level 00-Up    Remanufactured connecting rod assembly part numbers are located on the end of the cap. Refer to the remanufactured part number in Table 1 when utilizing remanufactured C13 Cylinder Packs and Connecting Rods.
Table 2
Reman Connecting Rod Assemblies Not Permitted to Mix    
(1) 10R-7989 is not weight matched and cannot be used with:     (2) 20R-0486    
(3) 10R-2789
(4) 10R-4300 Remanufactured part numbers 20R-0486 (2), 10R-2789 (3), and 10R-4300 (4) are compatible in mass, and are interchangeable.Refer to the remanufactured part number on the end cap to ensure that all six connecting rods are weight matched.Required Parts for KCB1-31547 Truck Engines
Table 3
Part Number     Description    
(1) 10R-7989     Connecting Rod    
(1) Use this part number, if less than 6 of the connecting rods need to be replaced.    
(2) 10R-7988     Cylinder Pack As    
(2) Use this part number if less than 6 of the cylinder packs need to be replaced.    
(3) 10R-2789     Connecting Rod    
(3 ) Use this part number if all connecting rods need to be replaced.    
(4) 10R-6214     Cylinder Pack As    
(4) Use this part number if all connecting rods need to be replaced.     (S/N: KCB1-31547) C13 Truck engines were built with 160-8229 00-04 connecting rods and are ~200 g heavier than later designed 160-8229 05-06 and 223-9150 connecting rods. These engines require 10R-7989 (160-8229 00-04) connecting rods or 10R-7988 cylinder packs when three