2013/07/11 Caterpillar

Off-Highway Truck/Tractor:

773F (S/N: EED1-UP; EXD1-UP)

777F (S/N: JRP1-UP; JXP1-UP)

777G (S/N: T5A1-UP; TNM1-UP; RDR1-UP; T4Y1-UP)

Quarry Truck:

773G (S/N: MWH1-UP; JWS1-UP; T5S1-UP; T5T1-UP)

775F (S/N: EYG1-UP; DLS1-UP)

775G (S/N: T5F1-UP; RFM1-UP; MJS1-UP; T5W1-UP)

ReferenceService Magazine, SEPD1527, "New Duo-Cone^® Seal is Now Used on Certain AD55B Underground Articulated Trucks"

Description of Change: A new Duo-Cone^® seal is now used. The ramped side of the Duo-Cone^® seal is machined. The machining improves the sealing properties to prevent oil leaks.

Adaptable To:

Table 1

Use of the 365-4920 Duo-Cone Seal Gp
Model	Prefix	Part Number	Description
773F	S/N:EED & S/N:EXD	247-5520	Rear Wheel Gp
		279-7458	Rear Wheel Gp
775F	S/N:DLS & S/N:EYG	247-5520	Rear Wheel Gp
		279-7458	Rear Wheel Gp
777F	S/N:JRP & S/N:JXP	243-5544	Rear Wheel Gp
		261-2354	Rear Wheel Gp
		338-2831	Rear Wheel Gp
773G	S/N:JWS & S/N:MWH	308-3235	Final Drive, Brake, and Wheel Gp
		354-3034	Final Drive, Brake, and Wheel Gp
	S/N:T5S & S/N:T5T	308-3235	Final Drive, Brake, and Wheel Gp
		354-3034	Final Drive, Brake, and Wheel Gp
		386-9542	Final Drive, Brake, and Wheel Gp
775G	S/N:MJS & S/N:RFM	308-3235	Final Drive, Brake, and Wheel Gp
		354-3034	Final Drive, Brake, and Wheel Gp
777G	S/N:RDR & S/N:TNM	344-7240	Final Drive, Brake, and Wheel Gp
		356-9840	Final Drive, Brake, and Wheel Gp
		308-3213	Wheel and Brake Gp
		356-9843	Wheel and Brake Gp (Front)
	S/N:T5A & S/N:T4Y	344-7240	Final Drive, Brake, and Wheel Gp
		356-9840	Final Drive, Brake, and Wheel Gp
		385-7837	Final Drive, Brake, and Wheel Gp
		308-3213	Wheel and Brake Gp
		356-9843	Wheel and Brake Gp

The new 365-4920 Duo-Cone Seal Gp is a direct replacement for the former 317-6441 Duo-Cone Seal Gp. The use of the new Duo-Cone seal group is listed in Table 1.

Table 2

Adaptability of the 365-4920 Duo-Cone Seal Gp
Sales Model	Machines
773F	S/N:EED1-UP
	S/N:EXD1-UP
775F	S/N:DLS1-UP
	S/N:EYG1-UP
777F	S/N:JRP1-UP
	S/N:JXP1-UP
773G	S/N:JWS1-206
	S/N:MWH1-226
	S/N:T5S1-108
	S/N:T5T1-101
775G	S/N:MJS1-319
	S/N:RFM1-387
	S/N:T5W1-107
	S/N:T5F1-100
777G	S/N:RDR1-167
	S/N:TNM1-283
	S/N:T5A1-102
	S/N:T4Y1-129

The new 365-4920 Duo-Cone Seal Gp is adaptable to the machines listed in Table 2.

Table 3

Effectivity of the 365-4920 Duo-Cone Seal Gp
Sales Model	Effective
773G	S/N:JWS207-UP
	S/N:MWH227-UP
	S/N:T5S109-UP
	S/N:T5T102-UP
775G	S/N:MJS320-UP
	S/N:RFM388-UP
	S/N:T5W108-UP
	S/N:T5F101-UP
777G	S/N:RDR168-UP
	S/N:TNM284-UP
	S/N:T5A103-UP
	S/N:T4Y130-UP

The new 365-4920 Duo-Cone Seal Gp became effective in production with the machines listed in Table 3.