GUARD 4459467 - Caterpillar

This Program can be administered either before or after a failure. In either case the decision whether to apply the Program is made by the dealer. When reporting the repair, use "PS4358" 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.
Termination Date
February 28, 2000Problem
The lift arms may develop cracks in the welds that attach the 8X0750 Brackets "ears" to the lift arms on some 994 Loaders. The weld size can be increased to increase the service life.
Affected Product
Model & Identification Number
994 (9YF1-216)
Parts Needed
Not Applicable.
Action Required
If cracks develop in the welds attaching one or more of the 8X0750 Brackets "ears" use the attached procedure to increase the weld fillet size in the lower half of the bores on all four of the 8X0750 Brackets. It will be necessary to support the lift arms in a partially raised position to have access to these welded areas. Weld repair and increase the weld size as described in the rework procedure.
Service Claim Allowances
This is a 7-hour job. If previous repairs have been made part hours since repair apply. If it is necessary to remachine the bores and additional 8 hrs will be allowed.
Parts Disposition
Handle the parts in accordance with your Warranty Bulletin on warranty parts handling.
Attach.(1-Rework Procedure)Rework Procedure
Field Repair Procedure For 994 Lift Arm Side Plate Assembly
Scope:
This procedure covers the manual repair welding of the 8X0750 Brackets "ears" to 994 lift arm side plate assembly. This procedure will be used for preheat and for adding additional weld metal on the 8X0750 Bracket to side plate weld of the 994 lift arm assembly. Any use of this procedure to repair or add parts to the 994 Lift arm assembly or side plate assembly other than those specified below should be approved on a case by case basis.
Filler Materials:
Filler material for welding shall be:Lincoln Electric OS 71M Outer shieldLincoln Electric E7018 - LH70 Coated electrode
Preheat Instructions:
Weld area shall be heated to a minimum of 350 degrees F, and maintain 350 degree F minimum inter-pass temperature during the entire weld operation.
Prior to welding the surface to be welded shall be cleaned and free of foreign material (oxides, oil, grease, dirt, slag).
Number of passes necessary to increase the weld to a 40x60 mm size may vary based on the size of the existing weld.
Grind each layor to remove the tie-ins before adding additional layers.
Stagger stops to give taper effect
No welding within 6 mm of hole in plate.
Welding Instructions:
1. Clean all surfaces to be welded to insure no oil, grease, slag, or dirt is present.2. Using a heating torch, preheat weld metal, and plate to 350 degrees F minimum. Use a 350 degree tempilstick (CAT #9707-0051) to verify temperature (see Illustration). Prior to welding additional filler metal, make any repair welds as necessary in the