SPACER 3G4457 - Caterpillar

Illustration 65 g06180800
Tie Off Block
Remove the tie off block before adding the doubler plate. Tie off block that has to be removed is outlined in Illustration 65.Note: Fill and blend sand any imperfections that happened from cutting off the tie off block.
Illustration 66 g06180809
Remove groove weld reinforcement from weld shown in Illustration 66.The reinforcement will inhibit the doubler plate from sitting flat on the rib surface.
Illustration 67 g06181186
Doubler Plate Fabrication
(P) 150 mm (5.9 inch)
(R) 300 mm (11.8 inch)
(S) 450 mm (17.7 inch)
(T) 600 mm (23.6 inch)
(U) 830 mm (32.7 inch)
(V) 1000 mm (39.4 inch)
(X) 1150 mm (45.3 inch)
(Y) Radius 30 mm (1 inch)
(Z) 74 mm (2.9 inch), 6 places
(AA) 34 mm (1.3 inch)
(AB) 114 mm (4.5 inch)
(AC) Diameter 60 mm (2.4 inch), 6 places
(AD) 148 mm (5.8 inch)
(AE) 20 mm (0.8 inch)
(AF) 11.5 1.5 mm (0.45 0.06 inch)
(AG) 30 degrees
(W1) HFS
Refer to Illustration 67 to fabricate the doubler plate. This plate can be made out of ASTM A514 or equivalent material.
Illustration 68 g06181209
Doubler Plate Location
(AH) Doubler Plate
Align doubler plate (AH) with the center of the rib as shown in Illustration 68.
Illustration 69 g06159514
Locating Doubler Plate
(AH) Doubler Plate
(AJ) Main Rail Plate
(AK) Rib Plate
(AL) 5 2 mm (0.2 0.08 inch) Root Opening
(W1) 20 mm (0.8 inch) V Groove
Slide doubler plate (AH) against the existing fillet weld, creating a 20 mm (0.8 inch) single V groove (W2). Locate the plate to a root opening of 5 2 mm (0.2 0.08 inch) (AK). Refer to Illustration 69 shows an example of the joint geometry that will be created when the plate is located.
Illustration 70 g06159648
(AH) Doubler Plate
(W2) Weld 1.5 mm (0.06 inch) square groove weld, 10 mm (0.4 inch) fillet weld
(W3) Weld 1.5 mm (0.06 inch) all around square groove weld, 10 mm (0.4 inch) fillet weld, 6 places
Illustration 71 g06159655
No Weld Zone
Follow the welding callouts shown in Illustration 70.Align the doubler plate (AH) at the center of the flat portion of the rib plate (AK).Grind flush (AM) where doubler plate is installed.Note: Follow no weld zone (AN) to (AP)as shown in Illustration 70 and Illustration 71.
Illustration 72 g06159798
Transition Welds
(C) Gusset Plate
(AK) Rib Plate
(AR) 15 mm (0.6 inch)
(AS) 60 mm (2.4 inch)
(W1) 20 mm (0.8 inch) Fillet Weld
After the doubler plate (AH) is installed. Transition the ends of the gusset plates (C) as shown in Illustration 72. The transition should be a 4:1 ratio. Blend sand all transitions to a smooth transition.
Illustration 73 g06159817
Locating Tie Off Assembly
(AK) Rib Plate
(AT) 350 mm (13.8 inch)
(AU) 153 mm (6 inch)
Illustration 74 g06159826
(W4) 8 mm (0.3 inch) Fillet weld
After the doubler plates are welded, locate and weld the tie off bracket on the front side of the rib as per dimensions given in Illustration 73 and Illustration 74.