PRODUCT SUPPORT PROGRAM FOR REPAIRING THE STICK FOOT WHICH MAY CRACK ON CERTAIN 345B EXCAVATORS, 345B SERIES II EXCAVATORS, AND W345B SERIES II MATERIAL HANDLERS

Usage:

SEBE9045

January 24, 2005
U-28

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*before or* *after failure*	PRODUCT SUPPORT PROGRAM FOR REPAIRING THE STICK FOOT WHICH MAY CRACK ON CERTAIN 345B EXCAVATORS, 345B SERIES II EXCAVATORS, AND W345B SERIES II MATERIAL HANDLERS
6502		PS41733

NOTE: This Program can be administered either before or after failure. In either case the decision whether to apply the Program is made by the dealer. When reporting the repair, use "PS41733" as the Part number and "7755" as the Group Number. If administered before failure, use "56" as the Warranty Claim Description Code and use "T" as the SIMS Description Code. If administered after failure, 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

January 31, 2007

PROBLEM

Certain 345B excavators, 345B SERIES II Excavators and W345B SERIES II Material Handlers are experiencing cracks in the stick foot area. This procedure will give the information necessary for making the repair.

AFFECTED PRODUCT

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Model	Identification Number
345B	2NW000-156
345B Series II	APB000-302
W345B Series II MH	CDY000-321

PARTS NEEDED

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Qty	Part Number	Description
2	1483090	BEARING
2	1510650	BEARING SLEEVE

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
0-12000	100%	24.0	0	0	0	0
12001-15000	33.3%	12.0	25.0%	6.0	25.0%	6.0
NOTE: This is a 24.0-hr job.

PARTS DISPOSITION

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

Attach. (1-Rework Procedure)

Rework Procedure

PURPOSE: The purpose of this procedure is to reinforce the stick foot of 345B, 345B SERIES II, and W345B SERIES II MH stick foot. The stick part numbers that are applicable are 198-8039 and 148-0808.

MATERIALS: Make 2 of the reinforcement plates as indicated in Illustration #1.

Illustration 1
Use ASTM A572 Grade 42 or 50 steel (yield strength 290 Mpa (42,000 psi)) minimum) steel. If this is not available, find equivalent minimum yield strength steel that is weldable.

PARTS: 2 of 148-3090 BEARINGS and 2 of 151-0650 BEARING SLEEVES.

PROCEDURE:

1) Remove stick from boom.

2) Remove grease from boom foot bore and stick cylinder bore.

3) Set stick in safe position, laying on its side,

Illustration 2

4) Refering to Illustration #2, remove 4 bearings from the stick foot area (the dia 140 and dia 116 bores).

5) Take 1 reinforcement plate, and place on side of the stick as illustrated in Illustration #2. Use a piece of chalk and mark the outline of the plate. Remove plate.

6) Remove paint in all areas where the chalk marks were made. This ensures good penetration when welding.

7) Place plate on side of stick. Ensure that the plate is flush with the existing side plate. Eliminate gaps between reinforcement plate and side plate. If gaps are found, check to make sure reinforcement plate is not "riding" on top of an existing weld. Ensure that the welder will be able to reach the root in all areas. Grind if necessary to make appropriate space.

8) Weld as instructed per Illustration #2. Note that there is an area that requires grinding smooth after welding (at C). Transition all ends smoothly when welding. Needle peen all areas after welding.

Note: Referring to Illustration #2, A and F, this weld needs to blend smoothly into the stick foot boss.

9) Repeat steps 5-8 on the opposite side of the stick.

10) After welding, measure stick foot bore diameter and stick cylinder bore diameter. If after welding the dimensions are not met as indicated on Illustration #2, reweld and rebore those bores.

Note: Both bores need to be parallel within 1mm after machining.

11) Press 2 of 148-3090 bearing (stick foot) and 2 of 151-0650 bearing (stick cylinder) into the stick. Freezing to ?70 deg F is recommended before pressing.

Note: The bearings need to be pressed in (recessed) 9.5mm from the bore surface.

12) Paint repair area.

13) Reinstall stick to boom.