BLOCK 3815819 - Caterpillar

Remove top plate (A) from the assembly. Discard the part.
Weld repair and ground flush all the gouges on the top of torque tube.
Illustration 3 g03652787
(B) 80 mm (3.1 inch)
Measure a distance (B) from top of the torque tube and mark the location.
Illustration 4 g03652788
Place fabricated 452-4177 Plate (1) in the space created by the top pin bracket plates.
Tack 452-4177 Plate (1) into the position.
Illustration 5 g03652789
Refer Illustration 3 to mark the location for positioning fabricated 452-4176 Plates (2) .
Place one 452-4176 Plate (2) to the left of left-hand side doubler plate and tack into the position.
Place other 452-4176 Plate (2) to the right of right-hand side doubler plate and tack into the position.
Illustration 6 g03652790
(W1) 6 mm (0.2 inch) fillet weld (W2) 6 mm (0.2 inch) fillet weld over square groove with 1.5 mm (0.06 inch) penetration from point (C) to point (D)
Illustration 7 g03652791
Locate and weld fabricated plate (1) and plate (2) as per Illustration 6 and Illustration 7.
Illustration 8 g03652792
(E) 100 mm (3.9 inch)
Measure a distance (E) away from back of the torque tube and mark the location. Refer to Illustration 8.
Illustration 9 g03652793
Place fabricated 452-4178 Plate (3) on the marked location.
Illustration 10 g03652794
(W3) 8 mm (0.3 inch) fillet weld on both sides
Weld fabricated plate (3) only at the back edge as shown in Illustration 10.
Illustration 11 g03652795
Do not weld plate (3) at location (F) .
Illustration 12 g03652802
(P) 3 mm (0.1 inch) of chamfer on four edgesNote: Do not install 452-4181 Gusset before installing 452-4193 Plate As (4) .
Grind the edges of the bracket as per Illustration 12 in order to install the fabricated 452-4181 Gusset .
Illustration 13 g03652803
Place four fabricated 452-4181 Gusset (5) on the bottom of the B-pin bracket plates and tack into the position.
Illustration 14 g03652804
(W6) 4 mm (0.1 inch) V-groove weld (W7) 6 mm (0.2 inch) fillet weld
Illustration 15 g03652808
Note: Edge of the gussets should be centered on bracket plates to allow adequate weld shelf.
Weld each fabricated 452-4181 Gussets (5) as per Illustration 14 and Illustration 15.
Assemble all the hydraulic lines back into the machines.