FRAME AS 8Y7271 - Caterpillar

Illustration 1 g03321836
Table 1
Specification for 368-3256 Boom Cylinder Gp
Item Qty Part Specification Description
1 1 258-8503 Bushing Bore before installation is 70.27 0.04 mm (2.767 0.002 inch).
Installation depth is 7.5 0.3 mm (0.30 0.01 inch).
2 1 340-8342 Head Bore over two lands for the rod assembly is 75.53 0.03 mm (2.974 0.001 inch).
3 8 095-9806 Bolt Torque to 320 40 N m (236 30 lb ft).
4 1 258-8504 Bushing Bore before installation is 80.29 0.04 mm (3.161 0.002 inch).
Installation depth is 7.5 0.3 mm (0.30 0.01 inch).
A 1 368-3280 Boom Cylinder As Bore is 105.06 0.04 mm (4.136 0.002 inch).
5 1 133-6686 Special Locknut Before assembly, lubricate the face and the thread with 309-6932 Hydraulic Oil all around.
Torque to 4000 200 N m (2950 148 lb ft).
B 1 368-6829 Cylinder Rod and Bearing As Diameter of the cylinder rod is 74.93 0.03 mm (2.950 0.001 inch).
6 2 198-7265 Ring Lubricate the inside diameter and the outside diameter with the clean grease.
7 1 9X-3586 Seal As Lubricate the inside diameter and the outside diameter with the clean grease.
8 1 198-7267 Ring Lubricate the inside diameter and the outside diameter with the clean grease.
9 1 185-9051 Seal Ring The slit of seal ring must turn in direction of the piston.
10 1 114-0750 Bushing Outside diameter is 80.128 0.033 mm (3.1546 0.0013 inch).
Thickness is 2.475 0.025 mm (0.0974 0.0010 inch).
11 1 170-9842 Buffer Seal Lubricate the sealing lip lightly with the lubricant that is being sealed.
12 1 170-9858 U-Cup Seal Lubricate the sealing lip lightly with the lubricant that is being sealed.
13 1 165-9284 Lip Type Seal Lubricate the sealing lip lightly with the lubricant that is being sealed.
14 - - Apply green Loctite 609 to the wiper seal groove.