LINK ASSEM. 1M4599 - Caterpillar

Install and weld the fabricated plate (M) on the cut out as per dimensions shown in Illustration 25.Blade Surface Preparation
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Before grinding
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After grinding
Grind the surface of the blade to eliminate all splatters and carbon deposits
Ensure that the weld seam between the channel and plate on the back of the blade is ground flush. If necessary, refill with weld on this area and grind.New Bearing Positioning
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Position and install the new 348-6312 Bearing (1) onto the blade as per dimension that were marked in Step 1 under Topic ""Removal of Bearing"". The goal is to have the same dimension on both left and right sides.
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Tool (S) as shown in Illustration 30 can be fabricated to facilitate the bearing (1) clamping and assembly on the blade.
Use tool (S) to even the gap between the back of the blade and the bearing. If the gap cannot be reduced down to 2.5 mm (0.10 inch), it is necessary to pre-weld a root seam to insure the root fusion on the blade body and on the bearing itself.
Proceed to tack welding after the bearing positioning has been optimized.Pre-Heating
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Before welding, pre-heat bearing (1). The surface temperature should be around 120 °C (248 °F) before welding.Welding
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(W1) 10 mm (0.4 inch) bevel weld, 12 mm (0.5 inch) fillet weld on all around the bearing
Weld bearing (1) on the blade as per dimension shown in Illustration 32.
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As a rule of thumb, three fillet welds are required in the chamfer area and five more to make the 12 mm (0.5 inch) weld.Follow Illustration 33, Illustration 34, Illustration 35, Illustration 36, and Illustration 37 for proper welding of bearing (1) .Follow procedure from Topic ""Installation of Gussets"".Installation of Blade
Assemble blade to the machine. Refer to Special Instruction, REHS5361, "Installation of the Variable Pitch, Angle, and Tilt Blade on a D6N Track-Type Tractors" to install blade for your appropriate machines.