2008/12/01 Caterpillar

Off-Highway Truck:

793B (S/N: 1HL1-UP)

793C (S/N: CBR1-UP; 4AR1-UP; ATY1-UP; 4GZ1-UP)

Description of Change: New clamps are now used in order to secure the tube assemblies on the 793C trucks. The new clamps are also used in the High Displacement Engine conversion for the 793B and the 793C trucks. The new clamps will help prevent the tubes from cracking and leaking.

Adaptable To: The new 313-2506 Clamp As is used in order to secure the 157-2802 Tube As on the 171-4614 Water Lines Gp and the High Displacement Engine conversion for the 793C. The new 313-2506 Clamp As is used in order to secure the 226-1266 Tube As that is on the High Displacement Engine conversion for the 793B.

ReferenceRefer to Special Instruction, REHS1371, "Installation of 3516B High Displacement Engines in 793B Off-Highway Trucks" for information on installing the 313-2506 Clamp As on the 793B.

ReferenceRefer to Special Instruction, REHS0794, "Installation of 3516B High Displacement Engines in 793C Off-Highway Trucks" for information on installing the 313-2506 Clamp As on the 793C.

Illustration 1	g01684933
Typical view of 157-2802 Tube As (A) without the new 313-2506 Clamp As

Illustration 2	g01733253
Typical view of the 157-2802 Tube As (A) with the new 313-2506 Clamp As