303.5E2 CR, 304.5E2 XTC, 304E2 CR, 305.5E2 CR and 305E2 CR Mini Hydraulic Excavators Machine System Specifications Caterpillar

Bucket Linkage

Usage:

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Illustration 1	g02789788
Typical example Left side view

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Table 1
Specification for 277-4380 Bucket Linkage Gp and 278-9934 Bucket Linkage Gp
Item	Qty	Part	Specification Description
Before assembly, coat all bores for the pins and the sealing lips with black 5P-0960 Grease Cartridge. After assembly, apply black 5P-0960 Grease Cartridge to all joints.
1	1	266-3901 Pin As	Diameter is 44.934 to 44.975 mm (1.7691 to 1.7707 inch).
2	As required, use the following shims to adjust the minimum lateral clearance to the maximum of 0.6 mm (0.02 inch):
	2	176-8464 Shim	Thickness is 0.5 mm (0.02 inch).
	1	176-8465 Shim	Thickness is 1.0 mm (0.04 inch).
3	1	8T-4244 Nut	Position the nut (3) to the distance of 0.0 to 1.0 mm (0.00 to 0.04 inch) past the end of the bolt. For locking, tighten the nut (3) against the nut (4).
4	1	8T-4244 Nut
5	1	8T-4137 Bolt	Torque to 70 ± 15 N·m (52 ± 11 lb ft).
6	6	093-1430 Lip Type Seal	Install the dust seal so that the lip faces outside, as shown.
7	4	265-8719 Bushing	Before assembly, all bores must be free from paint and grease. And after assembly, coat all the bores with black 5P-0960 Grease Cartridge.
			Inside diameter before assembly is 45.0 mm (1.77 inch).
			Installation depth is 5.0 ± 0.5 mm (0.20 ± 0.02 inch).
8	As required, use the following shims to adjust the minimum lateral clearance to the maximum of 0.6 mm (0.02 inch):
	2	176-8464 Shim	Thickness is 0.5 mm (0.02 inch).
	1	176-8465 Shim	Thickness is 1.0 mm (0.04 inch).
9	As required, use the following shims to adjust the minimum lateral clearance to the maximum of 0.6 mm (0.02 inch):
	2	176-8464 Shim	Thickness is 0.5 mm (0.02 inch).
	1	176-8465 Shim	Thickness is 1.0 mm (0.04 inch).
10	As required, use the following shims to adjust the minimum lateral clearance to the maximum of 0.6 mm (0.02 inch):
	1	176-8464 Shim	Thickness is 0.5 mm (0.02 inch).
	1	176-8465 Shim	Thickness is 1.0 mm (0.04 inch).
11	2	277-4386 Pin As	Diameter is 44.934 to 44.975 mm (1.7691 to 1.7707 inch).
12	2	270-6513 Pin As	Diameter is 44.934 to 44.975 mm (1.7691 to 1.7707 inch).