VALVE GROUP (1 Relief Area) 2N8813 - Caterpillar

Engine:
3512B (S/N: YBB1-UP; YBC1-UP; LDE1-UP; LDF1-UP; YAY1-UP; YAZ1-UP)
3512C (S/N: LDJ1-UP)
3516B (S/N: YAP1-UP; YAR1-UP; YBT1-UP; YBW1-UP)
G3508 (S/N: DLR1-UP)
G3508B (S/N: RBK1-UP)
G3516 (S/N: L6A1-UP; L6F1-UP)
G3516B (S/N: JEF1-UP; L6J1-UP)
Power Module:
PM3516 (S/N: NBR1-UP)
Engine News SEBD9966, 31 October 2014, "An Improved Assembly Procedure For Auxiliary Water Pumps Used on Certain 3500 and G3500 Engines". Disregard the previous article, serial numbers have been added.Description of Change: An improved seal installation procedure is used during the assembly of certain auxiliary water pumps.Adaptable To: The improved assembly procedure is used on 424-3625 Auxiliary Water Pump Gp and 424-3629 Auxiliary Water Pump Gp. The updated water pumps are adaptable back to first production of the serial numbers listed above. Refer to Table 1 for the effective engine serial numbers.
Illustration 1 g03714202
Inspect your current auxiliary water pump weep hole for possible oil leaks. If oil is found in the weep hole, replace the auxiliary water pump.
Table 1
Effectivity    
S/N:LDE00173-UP    
S/N:LDF00264-UP    
S/N:YAY01175-UP    
S/N:YBB00204-UP    
S/N:YAZ00675-UP    
S/N:YBC00120-UP    
S/N:LDJ00121-UP    
S/N:YAP00710-UP    
S/N:YBT00300-UP    
S/N:YAR00574-UP    
S/N:YBW00201-UP    
S/N:DLR00128-UP    
S/N:RBK01394-UP    
S/N:L6A00199-UP    
S/N:L6F00138-UP    
S/N:JEF02685-UP    
S/N:L6J00140-UP    
S/N:NBR00927-UP