SEAL-LIP TYPE 7C7808 - Caterpillar

Engines:
G3406 (S/N: 4FD; 1RK; 5NW)
G3408 (S/N: 6NB; 6RJ; 6FW)
G3408C (S/N: 3WR; 8YR)
G3412 (S/N: 7DB; 3NK; 8LW)
G3412C (S/N: 6ZM; 5KR1-UP; 9RR)
G3508 (S/N: 4WD; 2JF; 9TG; 2TJ; CPJ; CPS; 9AW; CPY)
G3512 (S/N: 4KC; 5JD; 7NJ; CRN; 9FP; CSP; 6JW)
G3516 (S/N: 3RC; 8LD; CPG; 4EK; 5PN; 8PW; CSZ)
G3516B (S/N: CSC; CEY; 7EZ)
G3520 (S/N: 5XW)
G3524 (S/N: 5ZZ; 7SZ)
G3532 (S/N: 8BZ)
The carburetors that follow are used on these engines:
9Y-0831 Carburetor Group
9Y-3834 Carburetor Group
9Y-4255 Carburetor Group
9Y-4352 Carburetor Group
9Y-4358 Carburetor Group
100-7478 Carburetor Assembly
188-9978 Carburetor Assembly
211-6824 Carburetor Assembly The carburetors that are listed above include the 7E-1598 Mixer Assembly. Two different diaphragms are available for servicing this mixer assembly. The two diaphragms are not interchangeable.
Illustration 1 g00874776
This illustration shows an exploded view of the components of a 7E-1598 Mixer Assembly . (1) Diaphragm (2) PlateThere are two ways to identify the diaphragm (1) that should be used to service the mixer assembly. The mixer assembly must be removed from the carburetor in order to make the identification.The color of the diaphragm (1) can be used to identify the correct diaphragm. If the color of the diaphragm is yellow, a "Type 1" diaphragm is being used. If the color of the diaphragm is blue, a "Type 3" diaphragm is being used.The plate (2) can be used to identify the correct diaphragm. Check the diameter of the hole in the center of the plate. If the diameter of the hole is 20.55 mm (0.809 inch), a "Type 1" diaphragm should be used. If the diameter of the hole is 26.51 mm (1.044 inch), a "Type 3" diaphragm should be used.If a "Type 1" diaphragm is identified, the diaphragm can be serviced with the 7W-4286 Diaphragm. The "Type 1" diaphragm can be upgraded to the "Type 3" diaphragm by installing the components of a 142-1470 Conversion Kit. The table identifies the serviceable components of the "Type 1" and the "Type 3" mixer assemblies.If a "Type 3" diaphragm is identified, the diaphragm can be serviced with the 156-7357 Diaphragm.
Table 1
Serviceable Components Of The 7E-1598 Mixer Assembly    
Description    Qty    "Type 1"
Part Number    "Type 3"
Part Number    
Diaphragm     1     7W-4286     156-7357 (1)    
Plate     1     125-1329     156-7360 (1)    
Screw     4     6L-7159     7S-1201 (1)    
Lockwasher     4     N/A     1H-4393 (1)    
Bushing     1     N/A     156-7351 (1)    
Bushing     1     N/A     156-7362 (1)    
( 1 ) This component is a part of the 142-1470 Conversion Kit .