M312 Excavator Machine System Caterpillar


Bucket Cylinder

Usage:

M312 6TL



Illustration 1g03399520

Table 1
Specification for 120-6358 Bucket Cylinder Gp    
Item     Qty     Part     Specification Description    
1     2     117-9436 Bushing     Bore before assembly is 50.18 ± 0.02 mm (1.976 ± 0.001 inch).    
Installation depth is
7.5 ± 0.5 mm (0.30 ± 0.02 inch).
A     1     121-1993 Cylinder As     Bore is
90.000 to 90.054 mm (3.5433 to 3.5454 inch).    
B     1     137-5709 Rod As     Diameter is
64.93 ± 0.03 mm (2.556 ± 0.001 inch).    
C     1     121-1994 Head     Bore over two lands is
65.53 ± 0.03 mm (2.580 ± 0.001 inch).    
2     1     143-8149 Special Locknut     Before assembly, apply 309-6932 Hydraulic Oil to the face and threads.    
Torque to
2900 ± 90 N·m (2139 ± 66 lb ft).
3     1     099-6976 Ring     Lubricate the inside diameter and the outside diameter with clean grease.    
4     1     099-6973 Seal As     Lubricate the inside diameter and the outside diameter with clean grease.    
5     1     105-2630 Ring     Lubricate the inside diameter and the outside diameter with clean grease.    
6     1     121-1997 Seal Ring     Slit of ring must turn in direction of piston.    
7     1     114-0754 Bushing     Diameter is
70.120 ± 0.025 mm (2.7606 ± 0.0010 inch).    
Thickness is
2.475 ± 0.025 mm (0.0974 ± 0.0010 inch).
8     1     170-9840 Buffer Seal     Lubricate lightly with lubricant that is being sealed.    
9     1     170-9856 U-Cup Seal     Lubricate lightly with lubricant that is being sealed.    
10     1     165-9282 Lip Type Seal     Lubricate lightly with lubricant that is being sealed.    
11     1     -     Before assembly, apply green Loctite 609 to the wiper seal groove.    

Caterpillar Information System:

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