ACCUMULATOR GP-HYDRAULIC 7Y8421 - Caterpillar

Illustration 1 g02806496
Table 1
Specification for 320-6520 Boom Cylinder Gp
Item Qty Part Specification Description
1 2 212-8960 Bearing Bore diameter after assembly is 70.259 0.047 mm (2.7661 0.0019 inch).
Bearing must not be extend beyond either sides of the cap face.
2 1 340-6339 Piston Seal Before assembly, lubricate the sealing lip lightly with the lubricant that is being sealed.
3 1 324-0369 Piston Torque to 450 25 N m (332 18 lb ft).
B 1 324-0372 Cylinder As Bore diameter is 120.000 to 120.087 mm (4.7244 to 4.7278 inch).
C 1 324-0361 Hydraulic Cylinder Rod As Diameter is 64.924 to 64.970 mm (2.5561 to 2.5579 inch).
4 1 338-2446 U-Cup Seal Before assembly, lubricate the sealing lip lightly with the lubricant that is being sealed.
5 1 338-2416 Wiper Seal Before assembly, lubricate the sealing lip lightly with the lubricant that is being sealed.
6 2 331-1520 Bearing Bore diameter after assembly is 55.100 to 55.174 mm (2.1693 to 2.1722 inch).
Bearing must not be extend beyond either sides of the eye face.
7 1 324-0367 Cylinder Head Bore diameter is 65.380 0.025 mm (2.5740 0.0010 inch).
Before assembly, apply blue Loctite 242 to the threads.
Torque to 600 130 N m (443 96 lb ft).
8 1 324-0427 Spindle Before assembly, apply blue Loctite 242 to the threads.
Torque to 164 20 N m (121 15 lb ft).
9 2 350-3842 Set Screw Torque to 23 3 N m (204 27 lb in).