2012/10/23 Caterpillar

Backhoe Loader:

422E (S/N: MAW1-UP)

428E (S/N: DPH1-UP)

432E (S/N: JBA1-UP)

434E (S/N: SEF1-UP; SJL1-UP)

442E (S/N: EME1-UP)

444E (S/N: NBA1-UP)

Service Magazine SEPD1402, 23 February 2012, "An Updated Assembly Procedure Now Used for E-stick Upper Wear Pads on Certain Backhoe Loaders Backhoe Loader". Disregard this article. See the replacement article that follows.

Description of Change: A new assembly procedure is now used on the upper wear pads for the machines listed. This procedure will ensure the 319-9667 Pad As and the 319-9668 Pad As will remain attached the machine correctly.

Adaptable To: When installing the 319-9667 Pad As, add Loctite 271 (High Strength) to the bolt threads. Use a 16mm socket to torque the 8T-4196 Bolt to 30 ± 7 N·m (22 ± 5 lb ft). Ensure that the 319-9668 Pad As is correctly positioned and adjusted.

Refer to Operation and Maintenance Manual, SEBU8475, "Extender Stick Pads - Inspect/Adjust".

Table 1

Parts
Item	Qty	Part Number	Description
1	4	319-9667	Pad As
2	4	319-9668	Pad As
3	8	8T-4196	Bolt (1)
4	8	8T-4121	Hard Washer

( 1 )

Torque to 30 ± 7 N·m (22 ± 5 lb ft)

Note: Parts replacement is to be done only after failure of the specific parts. The updated assembly procedure is adaptable to the following machines.

• 422E (S/N: MAW1-675,677-692)

• 428E (S/N: DPH1-687,689-1013,1015-1383)

• 432E (S/N: JBA1-966,969-978,982-995,997-1017)

• 434E (S/N: SEF1-185) (S/N: SJL1-266,271-273)

• 442E (S/N: EME1-193)

• 444E (S/N: NBA1-179)

The updated assembly procedure is effective with the following machines.

• 422E (S/N: MAW693-UP)

• 428E (S/N: DPH1384-UP)

• 432E (S/N: JBA1018-UP)

• 434E (S/N: SEF186-UP; SJL274-UP)

• 442E (S/N: EME194-UP)

• 444E (S/N: NBA180-UP)