2014/12/24 Caterpillar

Backhoe Loader:

450E (S/N: RBA1-UP; EBL1-UP; LYR1-UP)

450F (S/N: HJR1-UP)

Description of Change: Improved nut and bearing now used on the listed Backhoe Loaders. The improved nut and bearing provide increased retention of drive nut.

Adaptable To: The improved nut and bearing are effective in production with, and adaptable to the following machines.

Table 1

Machine	Effective With	Adaptable To
450E	-	S/N:EBL1-UP
450E	S/N:LYR160-UP	S/N:LYR1-159
450E	-	S/N:RBA1-UP
450F	S/N:HJR333-UP	S/N:HJR1-332

A new 451-5463 Nut and 451-5464 Bearing As is now used. The torque of the new nut has increased to 1200 N·m (885 lb ft). The nut and bearing can be installed on all 450 final drive assemblies. The 451-5465 Final Drive, Brake, and Wheel Gp contains the new nut and bearing.

Table 2

Quantity	New Part Number	Description
1	451-5463	Nut
1	451-5464	Bearing As