SEAL 1230942 - Caterpillar

Illustration 10 g03316771
Place the new bottom plate (1) on the boom foot and tack weld. Refer to Illustration 10.
Illustration 11 g06197939
Boom foot
(Z) 569.5 mm (22.42 inch)
(AA) 284.75 mm (11.21 inch)
(AB) 449.5 mm (17.70 inch)
(AC) 224.75 mm (8.85 inch)
Illustration 12 g06197962
Boom foot side view
(J) 25 degree angle - 2 degrees to + 5 degrees
(AD) 979.0 3.0 mm (38.54 0.10 inch)
(AE) Weld point
(AF) Weld must be continuous and free of starts and stops between points AE and AF. Two passes must be made between points Z and AB.
(AG) Weld point
(AH) Two times the diameter of 95.000 0.018 mm (3.7400 0.0007 inch)
(AJ) 24.5 mm (0.96 inch) maximum and 21.5 mm (0.85 inch) minimum
(AK) Weld point
(AL) Weld point
(AM) Weld point
(AN) View of area
(AP) Weld must be continuous and free of starts and stops between points AG and AF. Two passes must be made.
(AR) 1487.0 mm (58.54 inch)
(AS) 1756 3 mm (69.1 0.1 inch)
(AT) 100 mm (3.9 inch)
(AU) 4.5 1.5 mm (0.18 0.06 inch)
(AV) 2 mm (0.01 inch) maximum
(AW) Reweld butt joint at both ends of plate after gouging ( 4 mm (0.2 inch) minimum) from the back side of beveled plates or use flux-tab before welding. Grind plate edge flat and chamfer 0.5 to 3 mm (0.02 to 0.1 inch) for both corners.
(AX) 1E0099S specification
(AY) 1E2111 specification
(AZ) Diameter of 79.963 mm (3.1481 inch)
(BA) Two times
(BB) 4.5 1.5 mm (0.18 0.06 inch) minimumNote: 1E0099S: Indicates welding using mild steel, low hydrogen welding filler metals. Controlled heating cycles may or may not be required to control heat affected zone microstructure. These electrodes may also be used on hardenable steels and low alloy steels where "under-matched" welds deposits are allowed or preferred.Note: 1E2111: Designates a weld quality inspection level to provide for maximum safety of the operator/others and whose failure would result in expensive damage to a major component or extensive downtime during repair.
Weld all the areas to the original weld size.All necessary details for weld dimensions for repair are shown in Illustrations 11 and 12.Unless otherwise specified, all tack welds are as follows:
No cracks permitted on tack weld beads.
Tack welding within 50 mm (2.0 inch) from both ends is not permitted on inside back-up strip.
Tack welding within 50 mm (2.0 inch) from both ends is not permitted on bevel groove weld.
Length of back-up strip inside tack weld is not to exceed 20 mm (0.8 inch).
Unless otherwise specified, all welds are to be IE0099S.
Illustration 13 g06223819
Reinforcement Plate #1 (4)
Fabricate reinforcement plate #1Measurement details shown in above illustration.
Illustration 14 g06223822
Reinforcement Plate #2 (5)
Fabricate reinforcement plate #2Measurement details shown in above illustration.
Illustration 15 g06223827
Reinforcement Plate #3 (6)
Fabricate reinforcement plate #3.Measurement details shown in above illustration.
Illustration 16 g06223895
Bulged Areas
Remove bulged areas by grinding as required.
Illustration 17 g06223906
(1) Reinforcement plate # 1
(2) Reinforcement plate # 2
(3) Reinforcement plate # 3
Illustration 18 g06223902
Install reinforcement plates #1, #2, and #3. Refer to illustration above for welding.Finishing Repair Process
Grind new weld joints smooth and clean.
Machine the boss end surface and inside diameter to original size.
Install two new 240-2913 Bearing-Sleeves to the