New High-Pressure Fuel Pumps Are Now Used on Certain C175 Powered 793F, 794F, and 797F Machine Engines {1255, 1256} Caterpillar


New High-Pressure Fuel Pumps Are Now Used on Certain C175 Powered 793F, 794F, and 797F Machine Engines {1255, 1256}

Usage:

793F D3T
Mining Truck
794 AC (S/N: HRT101-102)
Off-Highway Truck/Tractor
793F (S/N: D3T1-159; J4Y1-1019)
797F (S/N: L4G1-1010; LTZ142-145)
798 (S/N: K1H1-1006)

Description Of Change: The new fuel pumps have an improved internal design to make the pump more robust than the previous design.

Adaptable To: The following changes are adaptable to the products within the listed serial numbers, and are effective with all products after the listed serial numbers.

Table 1 contains the new part numbers and the engines that the fuel pumps are adaptable to.

Table 1
Engine  New Part Number  New Part Name  Quantity 
C175-20  549-5160  Fuel Pump Gp 
C175-16  558-5880  Fuel Pump Gp 
Table 2 contains the effected engine serial numbers.

Table 2
Effective Engine Serial Numbers 
(S/N: J4Y1019-UP) 
(S/N: K1H1006-UP) 
(S/N: L4G1010-UP) 

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