PRODUCT SUPPORT PROGRAM FOR REPAIRING THE SWING FRAME ASSEMBLY ON CERTAIN 416D, 420D, 424D, 428D, 432D, 438D, AND 442D BACKHOE LOADERS

Usage:

SEBE9056

February 8, 2005
U-37
A-27
D-31
O-33

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*After failure only*	PRODUCT SUPPORT PROGRAM FOR REPAIRING THE SWING FRAME ASSEMBLY ON CERTAIN 416D, 420D, 424D, 428D, 432D, 438D, AND 442D BACKHOE LOADERS
6506		PS50922

NOTE: This Program can only be administered after a failure occurs. The decision whether to apply the Program is made by the dealer. When reporting the repair, use "PS50922" as the Part number and "7755" as the Group Number. Use "96" as the Warranty Claim Description Code and use "Z" as the SIMS Description Code.

NOTE: The information supplied in this service letter may not be valid after the termination date of this program. Do not perform the work outlined in this Service Letter after the termination date without first contacting your Caterpillar product analyst.

TERMINATION DATE

February 28, 2007

PROBLEM

The swing frame tapered pin and nut may come loose, causing damage to the swing frame assembly on certain 416D, 420D, 424D, 428D, 432D, 438D, and 442D BACKHOE LOADERS.

AFFECTED PRODUCT

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Model	Identification Number
416D	BGJ574-653
420D	BKC508-919 BMC620-636
424D	BGP995-1612 BKR563-568
428D	BLL676-712 BMT2418-3227 BNS1523-1851
432D	BLD2433-3844
438D	BPE701-742 BPN507-549
442D	BRY815-891 BRG955-1122

PARTS NEEDED

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Qty	Part Number	Description
1	8T3652	NUT
1	1300484	PIN
1	2366954	FRAME ASSEMBLY
2	2368182	PIN
2	2517319	BEARING
2	2517320	BEARING

ACTION REQUIRED

See the attached Rework Procedure.

SERVICE CLAIM ALLOWANCES

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Product smu/age whichever comes first	Caterpillar		Dealer Suggested		Customer Suggested
Product smu/age whichever comes first	Parts	Labor Hrs	Parts	Labor Hrs	Parts	Labor Hrs
0-3000 0-0 mos	100%	9.0	0	0	0	0
0-0 0-0 mos	0%	0	0	0	0%	0
NOTE: This is a 9.0?hr job.

PARTS DISPOSITION

Handle the parts in accordance with your Warranty Bulletin on warranty parts handling.

Attach. (1-Rework Procedure)

Rework Procedure

Centralize the slide frame assembly on the main frame.
Assemble the widest hoe bucket to the stick for greater stability during disassembly of the boom and stick.
Drive the machine on to level ground, open out the stick to it?s full extent and lower the boom until the bucket is flat on the ground.
Disconnect the boom cylinder from the swing frame and retract the cylinder rod. Switch off the engine and operate the hoe levers to dump the pressure.
Disconnect the boom release cable and make safe.
Remove the hose clamp on the swing frame. Mark all boom and stick hoses within the slide frame assembly and disconnect. Cap off all open hoses and connectors and pull through towards the boom assembly.
Support the boom assembly. Remove the two 1300485 BOOM FOOT PINS and lower the boom to the ground.
Support the swing frame. Remove the two 9R8579 SWING CYLINDER PINS from the swing frame and remove the upper and lower pins holding the swing frame too the slide frame assembly.
With the new 2366954 FRAME ASSEMBLY, press out the 2370944 and the 2370945 BOOM FOOT BEARING and replace with two 2517319 and 2517320 BEARING highlighted in the PARTS NEEDED list. Inspect the swing frame bottom tapered bore before assembly, making sure that it is free of any forms of contamination.
Assembly is the reverse of the disassembly procedure.