PRODUCT SUPPORT PROGRAM FOR REWORKING THE ALL WHEEL DRIVE CLUTCH ASSEMBLY ON CERTAIN 416C, 426C, 428C, 436C AND 438C BACKHOE LOADERS Caterpillar

PRODUCT SUPPORT PROGRAM FOR REWORKING THE ALL WHEEL DRIVE CLUTCH ASSEMBLY ON CERTAIN 416C, 426C, 428C, 436C AND 438C BACKHOE LOADERS

Usage:

Caterpillar: Confidential Yellow

PRODUCT SUPPORT PROGRAM FOR REWORKING THE ALL WHEEL DRIVE CLUTCH ASSEMBLY ON CERTAIN 416C, 426C, 428C, 436C AND 438C BACKHOE LOADERS

SEBE6992-02

August 16, 1999
(Revised October 2001)
U-231
A-186
AU-152
S-129
H-91
O-203

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*After failure only*	PRODUCT SUPPORT PROGRAM FOR REWORKING THE ALL WHEEL DRIVE CLUTCH ASSEMBLY ON CERTAIN 416C, 426C, 428C, 436C AND 438C BACKHOE LOADERS
3060 3030 3400		PS5633

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 "PS5633" 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.

NOTE: This Revised Service Letter replaces the August 16, 1999 (Revised February 2000) Service Letter. Changes have been made to the Termination Date.

TERMINATION DATE

August 31, 2002

PROBLEM

Failures of the Front Output Shaft in the direct drive transmission on certain All-Wheel Drive 416C, 426C, 428C, 436C and 438C Backhoe Loaders have been reported. The shaft failures have resulted from the loosening and dislocation of
the 9U8875 Retaining Ring (3) on the 1528117 Shaft Assembly (1). See Illustration 1. Machines with the following transmission serial numbers are subject to this type of shaft failure: 15588 D97 7674 through 15588 B98 15009.

AFFECTED PRODUCT

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Model	Identification Number
416C	5YN2154-4365
	4ZN1790-6201
	1WR657-3248
	1XR481-686
426C	6XN597-1392
	7WN257-440
	1CR168-368
	1ER165
	1MR265-458
	1NR255
	1YR306-566
	1ZR228-230
436C	8TN283-451
	9JN185
	1FR218-611
	1GR216-217
	1PR306-601
	1RR299-303
	2AR222-612
	2BR212
428C	8RN1010-1712
	2CR2424-4697
438C	9KN368-562
	2DR729-1091
	1JR409-610
	1TR615-802

PARTS NEEDED

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Quantity	Part Number	Description
9	6T9194	Plate
1	1210490	Ring-Retainer
1	1210630	Retainer
1	1210900	Shaft Assembly

ACTION REQUIRED

Replace the parts shown in Table 1 and Illustration 1. See
Service Manual Module SENR1206-01 and Service Magazine article
dated June 28, 1999 for disassembly and assembly instructions. NOTE: All the parts listed in Table 1 must be replaced. Inspect all other parts and replace as necessary.

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 (D/N)	Labor Hrs (Cost)	Parts	Labor Hrs	Parts (C/L)	Labor Hrs (Sell)
0-3000 0-36 Mo	100%	16	0	0	0	0
3001-5000 37-48 Mo	33 1/3%	8	0	0	50%	8
NOTE: This is a 16-hour job.

PARTS DISPOSITION

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

Attach. (1-Rework Procedure)

Rework Procedure

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Parts of the Front Output Shaft
Parts to be Removed				Replacement Parts
Type	Qty	Part Number	Description	Qty	Part Number	Description
1	1	152-8117	Shaft Assembly	1	121-0900	Shaft Assembly
2	1	8E-5707	Plate End	1	121-0630	Retainer
3	1	9U-8875	Ring Retainer	1	121-0490	Retaining Ring
4	8	6T-9194	Plate	9	6T-9194	Plate