320 GC, 320 and 323 Excavator Machine Systems Specifications Caterpillar


Bucket Linkage

Usage:

320 BR6


Illustration 1g03715224
Typical example

Table 1
Specification for 278-9293 Bucket Linkage Gp and 385-3232 Bucket Linkage Gp 
Item  Qty  Part  Specification Description 
All bores must be free of paint. Use 5P-0960 Grease Cartridge in order to coat all the pin bores and the bushings before assembly. After you assemble the bushings coat all the bores and the bushings with 5P-0960 Grease Cartridge. 
248-7820 Pin  Diameter is 69.85 ± 0.04 mm (2.750 ± 0.002 inch)
248-7835 Bushing  Bore before assembly is 70.17 ± 0.04 mm (2.763 ± 0.002 inch).
Installation depth is 9.73 ± 0.20 mm (0.383 ± 0.008 inch)
235-7679 Lip Type Seal  Lubricate the sealing lip of the lip type seals lightly with the lubricant that is being sealed. Install the dust seal so that the lip faces the outside, as shown. Install the lip type seals so that the lips of the lip type seals do not extend beyond the face of the boss. 
229-1092 Bushing  Install the bushing in the bore so that the part number of the bushing is facing outward.
Bore before assembly is 65.129 ± 0.040 mm (2.5641 ± 0.0015 inch).
Installation depth is 9.5 ± 0.8 mm (0.37 ± 0.03 inch)
248-7836 Lip Type Seal  Lubricate the sealing lip of the lip type seals lightly with the lubricant that is being sealed. Install the dust seal so that the lip faces the outside, as shown. Install the lip type seals so that the lips of the lip type seals do not extend beyond the face of the boss. 
451-2183 Nut  Position the nut (7) to the distance of 0.5 mm (0.02 inch) past the end of the bolt. For locking, tighten the nut (6) against the nut (7).
Torque to 175 ± 30 N·m (129 ± 22 lb ft)
451-2183 Nut 
086-0523 Pin  Diameter is 64.77 ± 0.03 mm (2.550 ± 0.001 inch)
096-4876 Nut  Torque to 105 ± 20 N·m (77± 15 lb ft)
10  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. 
11  7I-6843 Pin  Diameter is 59.86 ± 0.03 mm (2.357 ± 0.001 inch)

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