Hose Clamp Retention Information for 794 AC Off-Highway Truck has Changed {4257, 4304, 5057, 7510, 7540, 7554} Caterpillar

Off-Highway Truck/Tractor

794 AC (S/N: MN51-56; MT51-120)

Description Of Change: New half clamps are now used on the hose assemblies in certain lines groups. The new half clamps are sized for use with hose assemblies. The former clamp assemblies were designed for use with steel tubing. The new half clamps will improve the service life of the hose assemblies in the field.

Adaptable To:

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Do not operate or work on this product unless you have read and understood the instruction and warnings in the relevant Operation and Maintenance Manuals and relevant service literature. Failure to follow the instructions or heed the warnings could result in injury or death. Proper care is your responsibility.

Table 1

Clamp Information
Former Part Number	Former Part Name	Inside Diameter	New Part Number	New Part Name	Inside Diameter
432-7469	Clamp As	12.7 mm (0.50 inch)	517-5505	Half Clamp	13.5 mm (0.53 inch)
432-9905	Clamp As	17.15 mm (0.675 inch)	468-9700	Half Clamp	17.2 mm (0.68 inch)
432-9980	Clamp As	19.05 mm (0.750 inch)	468-9671	Half Clamp	19.0 mm (0.75 inch)
432-9982	Clamp As	22.22 mm (0.875 inch)	517-5448	Half Clamp	22.1 mm (0.87 inch)
432-3703	Support Clamp Assembly	26.67 mm (1.050 inch)	468-9673	Half Clamp	26.9 mm (1.06 inch)
463-1120	Clamp	30 mm (1.2 inch)	517-5530	Half Clamp	29.2 mm (1.15 inch)
432-9904	Clamp As	32 mm (1.3 inch)	468-9674	Half Clamp	30 mm (1.2 inch)
432-9409	Clamp As	33.4 mm (1.32 inch)	517-5534	Half Clamp	33.7 mm (1.33 inch)
449-1412	Clamp As	35.81 mm (1.410 inch)	468-9708	Half Clamp	35 mm (1.4 inch)
432-9428	Clamp As	38.1 mm (1.50 inch)
432-9427	Clamp As	44.45 mm (1.750 inch)	517-5461	Half Clamp	48.3 mm (1.91 inch)
432-9410	Clamp As	48.26 mm (1.900 inch)
442-3370	Support Clamp Assembly	50.8 mm (2.00 inch)	468-9676	Half Clamp	50.8 mm (2.00 inch)
432-8058	Clamp As	57.15 mm (2.250 inch)	468-9695	Half Clamp	54.4 mm (2.14 inch)
432-8059	Clamp As	60.33 mm (2.375 inch)	492-0991	Clamp	57.2 mm (2.25 inch)
442-3380	Clamp As	76 mm (2.99212 inch)	450-2867	Half Clamp	76.1 mm (3.00inch)

The new half clamps listed in Table 1 are direct replacements for the former clamp assemblies listed in Table 1.

Table 2

New Clamp Usage
Part Number	Part Name	Serial Number Effectivity
461-6749	Automatic Lubrication Gp	S/N:MT5121-UP
461-7558	Hoist Lines Gp	S/N:MT5121-UP
461-6738	Pump Lines Gp	S/N:MT5120-UP
461-6675	Steering Lines Gp	S/N:MT5119-UP
461-6754	Rear Attachment Lines	S/N:MT5119-UP
461-6720	Hydraulic Fan Lines Gp	S/N:MT5113-UP
461-6667	Hydraulic Oil Cooler Lines Gp	S/N:MT5136-UP
461-6700	Brake Lines Gp	S/N:MT5121-UP
461-6662	Hydraulic Oil Lines Gp	S/N:MT5119-UP
461-6650	Hydraulic Fan Lines Gp	S/N:MT5120-UP
480-9284	Brake Lines Gp	S/N:MT5113-UP
480-9285	Brake Oil Cooler Lines Gp	S/N:MT5113-UP
480-9286	Lubrication Lines Gp	S/N:MT5120-UP
465-6337	Steering Lines Gp	S/N:MT5113-UP
461-6730	Service Center Gp	S/N:MT5120-UP

The changes are adaptable to the products within the listed serial number, and are effective with all trucks after S/N:MN557-UP, and the listed serial numbers in Table 2.

Note: For trucks S/N:MN51-56, and ; S/N:MT51-112 that contains a lines group, the former part numbers listed in Table 1 can be replaced by the new part numbers listed in Table 1.