GASKET 3N1242 - Caterpillar

Engine:
G3516C (S/N: GSB1-UP; GZC1-UP; GZZ1-UP; F6H1-UP; F6J1-UP; F6K1-UP)
G3516E (S/N: GAS1-UP; F6L1-UP)
G3520C (S/N: GZA1-UP; GZB1-UP; GZL1-UP; RLP1-UP)
Description of Change: The new orifice groups improve coolant flow to the aftercooler. The orifice groups will provide an additional 0 to 4 percent heat load to the jacket water system.Adaptable To: The new 453-6633 Water Orifice Gp are used on G3516 engines and the 453-6634 Water Orifice Gp is used on G3520 engines.Note: Use two gaskets with each orifice plate.
Illustration 1 g03749608
Typical example of the location of the orifice plates. (1) 4N-1320 Gasket (2) 331-4905 Orifice Plate or 323-5836 Orifice Plate (3) 7N-4945 Gasket (4) 331-4906 Orifice Plate or 323-5835 Orifice Plate
Table 1
453-6633 Water Orifice Gp    
Item     Qty     Part Number    
1     2     4N-1320 Gasket    
2     1     331-4905 Orifice Plate    
3     2     7N-4945 Gasket    
4     1     331-4906 Orifice Plate    
Table 2
453-6634 Water Orifice Gp    
Item     Qty     Part Number    
1     2     4N-1320 Gasket    
2     1     323-5836 Orifice Plate    
3     2     7N-4945 Gasket    
4     1     323-5835 Orifice Plate    The orifice groups are adaptable back to first production of the serial numbers listed above. Refer to Table 3 for the effective serial numbers.
Table 3
Effectivity    
S/N:F6L00102-UP    
S/N:F6K00114-UP    
S/N:F6J00101-UP    
S/N:F6H00114-UP    
S/N:GZB00258-UP    
S/N:GZA00269-UP    
S/N:GZL00149-UP    
S/N:RLP00262-UP