301.7D, 302.2D and 302.4D Mini Hydraulic Excavator Machine Systems Caterpillar


Boom Swing Cylinder

Usage:

301.7D LJ4


Illustration 1g03227840

Table 1
Specification for 395-1266 Hydraulic Cylinder Gp 
Item  Qty  Part  Specification Description 
Bearing  Before assembly, apply Locktite 638 to the outer surface of the bearing. 
Before assembly, lubricated the threads with clean oil. 
Tighten the head to 280 to 310 N·m (207 to 229 lb ft).
Before assembly, lubricated the threads with clean oil. 
Tighten the piston to 25 to 35 N·m (221 to 310 lb in).
Left-hand thread 
Before assembly, lubricated the threads with clean oil.
Tighten the nut to 10 to 20 N·m (89 to 177 lb in).
Bend the collar of the piston at two places on the flat sides of the nut.
395-1258 Hydraulic Cylinder  Bore is 70 mm (2.8 inch)
395-1288 Piston Rod  Diameter is 40 mm (1.6 inch)
395-1276 Bushing  Bore after assembly is 36.125 to 36.050 mm (1.4222 to 1.4193 inch)
Stroke length is 399.0 ± 1.5 mm (15.71 ± 0.06 inch)

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