320B Excavator Machine System Specifications Caterpillar

Illustration 1	g00529539

Note: All bores must be free of paint. Coat all bores for pins with lubricant.

(1) 4I-4809 Pin Assembly

Diameter after plating ... 79.085 ± 0.025 mm (3.1136 ± .0010 inch)

Minimum thickness for plating ... 0.005 mm (.0002 inch)

Bore diameter for pin ... 80.037 ± 0.037 mm (3.1511 ± .0015 inch)

(2) Torque for bolt ... 325 ± 40 N·m (240 ± 29 lb ft)

(3) Use the necessary shims to adjust the lateral clearance.

Maximum clearance ... 1.6 mm (0.06 inch)

093-0083 Shim thickness ... 1.0 mm (.04 inch)

7Y-2498 Shim thickness ... 1.6 mm (0.06 inch)

093-0115 Shim thickness ... 2.0 mm (.08 inch)

(4) 128-9863 Sleeve Bearing

Quantity ... 2

Outside diameter ... 106.200 ± 0.013 mm (4.1811 ± .0005 inch)

Inside diameter ... 90.27 ± 0.02 mm (3.554 ± .001 inch)

Install the sleeve bearing in the bearing bore. ... 9.5 ± 0.8 mm (.37 ± .03 inch)

Note: Assemble the sleeve bearings with the groove in the location that is indicated.

(5) Lubricate the sealing lip slightly with the lubricant that is being sealed.

(6) 7Y-2395 Sleeve Bearing

Quantity ... 2

Outside diameter ... 85.160 ± 0.013 mm (3.3527 ± .0005 inch)

Inside diameter ... 70.25 ± 0.02 mm (2.766 ± .001 inch)

Install the sleeve bearing in the bearing bore. ... 7.5 ± 0.8 mm (.30 ± .03 inch)

(7) 128-9884 Sleeve Bearing

Quantity ... 2

Outside diameter ... 95.180 ± 0.013 mm (3.7472 ± .0005 inch)

Inside diameter ... 80.25 ± 0.02 mm (3.159 ± .001 inch)

Install the sleeve bearing in the bearing bore. ... 7.5 ± 0.8 mm (.30 ± .03 inch)

Note: Assemble the sleeve bearings with the groove in the location that is indicated.