ROD AS 1052444 - Caterpillar

Prepare the metal for welding according to "Preparing the Metal for Welding". Refer to the illustrations in this Special Instruction for welding symbols and specifications.Do not weld in windy conditions. Do not weld when temperatures are below 16 °C (60 °F).For more welding information, consult the Caterpillar Service Welding Guide, SEBD0512.Preparing the Metal for Welding
Personal injury can result from flame cutting or welding on painted areas.The effect of gasses from burned paint is a hazard to the person doing the cutting or welding.Do not flame cut or weld on painted areas.
All grease, water, paint, rust, dirt, and scale must be removed before welding. Any of these materials will discharge gas which will cause porosity in the weld deposit. Water and rust will cause hydrogen embrittlement. Hydrogen embrittlement causes cracks in the weld deposit.Remove paint, rust, dirt, and scale with a wire brush or by buffing or grinding. Shot blasting all work areas will also remove foreign material. Remove any oil or remove any grease with a Caterpillar approved solvent.Welding on Machines and Engines with Electronic Controls
Proper welding procedures are necessary in order to avoid damage to the electronic controls and to the bearings. The following steps should be followed in order to weld on a machine or an engine with electronic controls.Note: If you are welding on a work tool, Caterpillar recommends removing the work tool from the host machine before welding.
Turn off the engine.
Turn the battery disconnect switch to the OFF position. If there is no battery disconnect switch, then remove the negative battery cable at the battery.
Clamp the ground cable from the welder to the component that will be welded. Place the clamp as close as possible to the weld. Make sure that the electrical path from the ground cable to the component does not go through any bearing. Use this procedure in order to reduce the possibility of damage to the following components:
Bearings of the drive train
Hydraulic components
Electrical components
Other components of the machine
Do NOT use electrical components (ECM or sensors) or electronic component grounding points for grounding the welder.
Protect any wiring harnesses from the debris which is created from welding. Protect any wiring harnesses from the splatter which is created from welding.Modification Procedure
Table 2
Bore Diameters    
Adjuster Plate    Adjuster Flange    (LH) Top Pin    Bottom Pin    
91 mm (3.58 inch)    
90.1 mm (3.55 inch)    
90.1 mm (3.55 inch)    
90.1 mm (3.55 inch)    The following steps are a general guideline for modifying a C Family Bucket or an S Family Bucket to a CB Family Bucket. This Special Instruction is not intended for any other work tools.
Remove the existing adjuster from the hinge of the bucket.
Illustration 1 g01249731
Pin hole (C) must be filled up with a weld and no longer used on both the adjuster flange and the adjuster plate. The pin hole must be filled with weld before boring out the diameter of the adjuster flange and the adjuster plate.
Bore out the diameter of the Adjuster Plate, the Adjuster