PISTON-BRAKE 7Y4213 - Caterpillar

Two Strap Corner Adapters with Half Top Strap Positioned to Inside Sidebar
Illustration 11 g06281588
Assemble the adapter with hard contact at the base edge bevel (groove (HH)) and between adapter top strap and side bar at weld groove (FF). Equalize the top and bottom base edge gaps of the adapter straps. The minimum gap requiring equalization is 3 mm (0.12 inch) and must be equalized within 3 mm (0.12 inch) to the base edge. Use soft wire spacers to hold the position while tack welding at mid length in the root of the weld groove on the top strap.
IMPORTANT: Preheat the adapter, edge, and sidebar to a minimum 150° C (302° F). The maximum welding interpass temperature is 260° C (500° F). Please monitor temperatures frequently to ensure that these thresholds are not exceeded during the entire welding process.Note: All weld start points, stop points and weld illustrations are general and should be considered equivalent for both the top and bottom straps.
Begin the first weld bead at front start of top strap weld groove root (HH) or (DD). Apply continuous weld pass to end of groove (HH) or till weld groove reaches sidebar (DD).
Move to the other side of the adapter and repeat Step 2. Fill both weld grooves with alternating weld passes. Do not start fillet welds.
Fill weld grooves (EE) and (FF) with no starts and stops at the leading-edge transition between the sidebar and top of the adapter.
If a sidebar filler plate was used, apply a bevel weld (GG) between the base edge and filler plate.
If welding multiple corner adapters to a bucket, repeat Steps 1 through 6.
Turn the bucket over such that the bottom side is facing up. Weld the corner adapter bottom straps using the same methods for welding the center adapter bottom straps. There are two options depending on the adapters weld groove geometry:
a) if applicable, Refer to "Two Strap Center Adapters with a Continuous Rear Weld Groove", Steps 8 through 11.
b) if applicable, Refer to "Two Strap Center Adapters with Side Only Weld Grooves", Steps 5 through 10.
Turn the bucket over such that the top side is facing up.
Apply the fillet welding between the adapter and the top of the base edge covering groove welds (DD) or (HH) and (GG). All succeeding weld beads should start behind the preceding layer to produce a staggered weld start end as shown in Illustration 8. The fillet bead passes should be applied alternately on each side of the adapter from front to back. The final weld pass should be on the previously deposited weld near, but not on the base edge weld toe.
Apply the fillet welds between the adapter top and the sidebar covering groove welds (EE) and (FF). Do not start or stop a fillet at the leading-edge transition between the sidebar and top of the adapter. Alternate weld passes from side to side, blending welds with sidebar weld (CC) and (GG).
If welding multiple corner adapters to a bucket, repeat Steps 10 and 11 for