390D Excavator Machine System Specifications Caterpillar


Boom Cylinder

Usage:

390D BYP


Illustration 1g03650194
Typical example

Table 1
Specification for 353-9616 Boom Cylinder Gp, 362-9780 Boom Cylinder Gp, and 470-7141 Boom Cylinder Gp 
Item  Qty  Part  Specification Description 
244-4258 Bushing  Bore before assembly is 150.38 ± 0.04 mm (5.920 ± 0.002 inch).
Installation depth is 10.0 ± 0.3 mm (0.39 ± 0.01 inch)
188-4192 Special Locknut  Before assembly. lubricate the face and threads with 309-6932 Hydraulic Oil all around.
Torque to 20000 ± 1000 N·m (14751 ± 738 lb ft)
155-9093 Ring  Lubricate the inside diameter and the outside diameter with clean grease. 
172-3918 Seal As  Lubricate the inside diameter and the outside diameter with clean grease. 
155-9094 Ring  Lubricate the inside diameter and the outside diameter with clean grease. 
353-9617 Cylinder As  Bore is 210.05 ± 0.05 mm (8.270 ± 0.002 inch)
Diameter is 144.93 ± 0.03 mm (5.706 ± 0.001 inch)
423-8109 Head  Bore over two lands is 145.63 ± 0.03 mm (5.733 ± 0.001 inch)
172-2997 Bushing  Bore before assembly is 150.340 ± 0.020 mm (5.9189 ± 0.0008 inch).
Installation depth is 10.0 ± 0.5 mm (0.39 ± 0.02 inch)
155-9096 Seal Ring  The slit of the seal ring must turn in the direction of the piston. 
155-9100 Bushing  Outside diameter is 150.153 ± 0.033 mm (5.9115 ± 0.0013 inch).
Thickness is 2.475 ± 0.025 mm (0.0974 ± 0.0010 inch)
367-3932 Buffer Seal  Lubricate the sealing lip lightly with the lubricant that is being sealed. 
10  367-3933 U-Cup Seal  Lubricate the sealing lip lightly with the lubricant that is being sealed. 
11  165-9295 Lip Type Seal  Lubricate the sealing lip lightly with the lubricant that is being sealed. 
12  Before assembly, apply green Loctite 609 to the wiper seal groove. 

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