2014/07/09 Caterpillar

Off-Highway Truck/Tractor:

793FSeries AC (S/N: EMD1-UP)

793F (S/N: SND1-UP; SSP1-UP; RBT1-UP)

795FSeries AC (S/N: ERM1-UP)

795F (S/N: SNT1-UP)

Service Magazine SEPD1812, 09 July 2014, "New Oil Tubes Are Used on 793F and 795F Off-Highway Truck Engines". Disregard the previous article, serial numbers have been added.

Description of Change: The new oil tubes are designed to allow more space between the tube and the hydraulic hose for the cooling fan.

Adaptable To: The new tubes replace the existing tubes. The new tubes are adaptable back to first production on the serial numbers listed above.

The new tubes are only compatible with the 445-4930 Engine Oil Filter Gp. Refer to Special Instruction, "REHS8661" for the procedure to retrofit an engine with the 445-4930 Engine Oil Filter Gp.

Illustration 1	g03682040
Location of the new oil tubes

Note: The new tubes must be changed together to avoid an interference issue. The new tubes are not compatible with the former tubes.Refer to Table 1 for a list of the new and former part numbers.

Table 1

New Part Number	Former Part Number
454-8557	433-6643
454-8558	394-3931

This change is effective for the engine serial numbers listed in Table 2.

Table 2

Effective Engine Serial Numbers

S/N:JTL01124-UP

S/N:B7B01865-UP

S/N:ZK201112-UP

S/N:B7C01004-UP