COVER 2078557 - Caterpillar

Illustration 1 g00748696
(A) 678 mm (26.7 inch) (B) 649 mm (25.6 inch) (C) 50 mm (2 inch) (D) 695 mm (27.4 inch) (E) 687 mm (27.0 inch) (F) 463 mm (18.2 inch) (G) 438 mm (17.2 inch) (H) 827 mm (32.6 inch) Radius (I) 99 mm (3.9 inch) (J) 75 mm (3.0 inch) (K) 821 mm (32.3 inch) (L) 1104 mm (43.5 inch) (M) 1115 mm (43.9 inch) (N) 24 1 mm (0.95 0.04 inch) at 45 Degrees (Both Sides)
Before the modification of the machine, two plates will need to be manufactured. The dimensions of the plates are shown in the above illustration. Use ASTM A 36 steel of a similar material with a minimum yield strength of 290 MPa (42060 psi).
Park the machine on a smooth, level surface. Lower the bucket to the ground. Turn off the engine. Turn the battery disconnect switch to the OFF position.
Illustration 2 g00747719
(1) Existing hinge plates.
Use the manufactured plates as a template. Place the manufactured plates over existing hinge plates (1). Mark the upper portion of the existing hinge plates that will need to be removed.
Remove the upper portion of the existing hinge plate that was traced in Step 3.
Grind a bevel on the mating surface of the existing plate. The bevel should be 24 1 mm (0.95 0.04 inch) deep and the bevel should be ground at a 45 degree angle. Grind a bevel on both sides.
Illustration 3 g00747699
(2) Manufactured plate. (3) Position of weld. (4) Existing plate. (5) Position of weld.
Weld manufactured plate (2) onto the bucket. The position of the welds are shown in illustration 3. Use a E7018 electrode or similar wire for welding. Achieve a weld penetration of 25 mm (0.99 inch) at location (5). Grind the weld flush with the existing material. Achieve a weld penetration of 1.5 mm (0.06 inch) and a weld width of 16 mm (0.63 inch) at location (3) .
Allow the weld to cool and paint the locations that were welded.