374D Excavator Machine System Specifications Bucket Linkage - VB Family Caterpillar


Bucket Linkage - VB Family
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Illustration 1g02148361

Note: All bores must be free of paint. Coat all the bores for pins with black molybdenum grease cartridge.

Note: Install 294-1561 Bushing in the bore so that the part number is facing outward.

(1) 294-1561 Bushing

Inside diameter ... 120.30 ± 0.02 mm (4.736 ± 0.001 inch)
Outside diameter ... 140.240 ± 0.013 mm (5.5213 ± 0.0005 inch)
Installation depth for the bushing ... 9.65 ± 0.80 mm (0.380 ± 0.032 inch)

(2) Lubricate the sealing lip of six lip type seals lightly with the lubricant that is being sealed. Install the dust seal so that the lip faces the outside. Install six lip type seals so that the lips of the lip type seals do not extend beyond the face of the boss.

(3) 294-1550 Pin As

Pin diameter ... 119.85 ± 0.04 mm (4.718 ± 0.002 inch)
Bore diameter for the pin assembly ... 120.043 ± 0.043 mm (4.7261 ± 0.0017 inch)

Note: Install 4I-6718 Bushing in the bore so that the part number is facing outward.

(4) 4I-6718 Bushing

Inside diameter ... 110.30 ± 0.02 mm (4.343 ± 0.001 inch)
Outside diameter ... 130.240 ± 0.013 mm (5.1276 ± 0.0005 inch)
Installation depth for the bushing ... 9.5 ± 0.8 mm (0.37 ± 0.03 inch)

(5) 212-3088 Pin As

Pin diameter ... 109.850 ± 0.040 mm (4.3248 ± 0.0016 inch)
Bore diameter for the pin assembly ... 110.30 ± 0.02 mm (4.343 ± 0.001 inch)

(6) 294-1545 Pin As

Pin diameter ... 89.85 ± 0.04 mm (3.537 ± 0.002 inch)
Bore diameter for the pin assembly ... 90.037 ± 0.037 mm (3.5448 ± 0.0015 inch)

(7) 282-4719 Pin As

Pin diameter ... 119.850 ± 0.040 mm (4.7185 ± 0.0016 inch)
Bore diameter for the pin assembly ... 120.043 ± 0.043 mm (4.7261 ± 0.0017 inch)

(8) During assembly of the linkage group on the machine, rotate the rod end of the bucket cylinder in order to position the grease fitting away from the stick.

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