SPRING-DISC 7G6698 - Caterpillar

On-Highway Engine: C13 (S/N: LEE1-UP) C15 (S/N: SDP1-UP)Introduction
Do not perform any procedure in this Special Instruction until you read this information and you understand this information.New Purge Pump and Service Pack
A new purge pump and a new service pack are now used. The new pump and a new service pack now have a larger inlet and outlet ports. The new purge pump and the new service pack require additional parts. The additional parts are used to connect the pump and the pack to existing lines and connections.
Illustration 1 g01432347
New Purge Pump and Service Pack (1) Inlet Port (9/16 - 18 inch) (2) Outlet Port (7/16 - 20 inch)
Illustration 2 g01432346
Old Purge Pump and Service Pack (3) Inlet Port (1/4 - 18inch) (4) Outlet Port (1/8 - 27 inch)The new purge pump requires a new electrical connector as well as a new inlet elbow and a new outlet elbow. The new service pack only requires a new inlet elbow and a new outlet elbow.The new parts that are required for the new purge pump and the service pack are listed in Table 1, Table 2, and Table 3.
Table 1
Required Parts for the 297-7223 Air Pump Gp    
Sales Model     Part Number    
C13 and C15     304-9992 Air Pump Gp    
C13 and C15     311-3502 Power Harness As    
C13 and C15     4R-8686 Flared Elbow    
C13S/N:LEE1-1974     6V-1355 Elbow    
C13 and C15     6V-5048 O-Ring Seal    
C13 and C15     6V-5049 O-Ring Seal    
C13     5P-4924 Elbow    
C15     030-7947 Elbow    Note: Install the updated fitting before inst