Product Improvement Program for reworking the 1U8763 Lifting Bracket Assembly. Caterpillar


Product Improvement Program for reworking the 1U8763 Lifting Bracket Assembly.

Usage:



REBE1339-00

14Nov2006


U-734
A-701
D-688
O-715

 
Dealer Tool
  
  

PRODUCT IMPROVEMENT PROGRAM FOR REWORKING THE 1U8763 LIFTING BRACKET ASSEMBLY.

0629 7750
PI70215
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

28Feb2007


PROBLEM

All 1U8763 Lifting Bracket Assemblies in dealer parts stock and in service need to be reworked.

The stamping on the horizontal beam of the 1U8763 Lifting Bracket Assembly incorrectly states the tool's capacity at 2 tons. The Bracket Assembly will not support this weight with the upper attachment point in the extended position.


ACTION REQUIRED

Rework all 1U8763 Lifting Bracket Assemblies in dealer parts stock. If dealers are aware of customers who have purchased a 1U8763 Lifting Bracket, dealers should rework these Lifting Brackets.


SERVICE CLAIM ALLOWANCES

Caterpillar will pay 100% Parts and 100% Labor. This is a 0.7 hour job per Lifting Bracket.


PARTS DISPOSITION

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

Rework Procedure

 
Post copy of the following counter letter:

PRODUCT IMPROVEMENT PROGRAM FOR REWORKING 1U8763 LIFT BRACKET ASSEMBLIES

Dear Caterpillar Tool Owner:

The stamping on the horizontal beam of the 1U8763 Lifting Bracket Assembly incorrectly states the tool's capacity at 2 tons. The Bracket Assembly will not support this weight with the upper attachment point in the extended position.

We regret the inconvenience this may cause you, but urge you to rework these 1U8763 Lifting Bracket Assemblies for your added safety and satisfaction.

Caterpillar Inc.

-----------------------------------------------------------------------
 
1U-8763 Lift Bracket Rework Instructions

Some 1U-8763 Lifting Bracket Groups may have been used in applications which exceeded the weight capacities of the lifting bracket groups. Dealers are asked to inspect and, if possible, rework any 1U-8763 Lifting Bracket Gp in the service tool inventory.

Inspection Procedure for the 1U-8763 Lifting Bracket Gp

Inspect the entire lifting bracket group. If either the vertical beam or the horizontal beam is deformed, cut the lifting bracket group with a torch so that the tool can not be used. Scrap the pieces of the lifting bracket group.

Rework Procedure for the 1U-8763 Lifting Bracket Gp that is Not Deformed

1. Disassemble the lifting bracket group.

2. Inspect the plates at the joint in the vertical beam. If the flatness of the plates varies more than 0.10 mm (0.004 inch), machine the plates in order to restore the flatness. Remove only the minimum amount of material that is necessary. Do Not remove more than 0.50 mm (0.020 inch) of material from the plates. Cut up the lifting bracket group if more than 0.50 mm (0.020 inch) of material must be removed from the plates.

3. Fabricate stop block (1) to the dimensions that are shown in the image below. Make the stop block from mild steel.
Image1.2.1
 
4. Weld stop block (1) onto the horizontal beam. The image below provides the location and the weld instructions.
Image1.3.1
 
5. Assemble the top and the bottom sections of the lifting bracket group with new hardware. Use two new 0S-1625 Bolts (3), two new 4D-3704 Hard Washers (4), and two new 4K-0367 Full Nuts (5).

6. Replace the hardware in the bottom section of the lifting bracket group. Install two new 1U-8762 Latched Hooks (9), two new 1A-5822 Bolts (6), four new 5P-8245 Hard Washers (7), and two new 1K-6872 Locknuts (8) .

7. Apply a new decal, NEEG3079, (2) to the upper beam on the lifting bracket group. Be sure to align the "4,000 lb" mark on the decal with the centerline of the vertical beam.
 
 

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