RING-SEAL 7Y4938 - Caterpillar

Illustration 1 g03424326
Table 1
Specification for 183-8910 Boom Cylinder Gp    
Item     Qty     Part     Specification Description    
1     1     258-8502 Bushing     Bore before assembly is 70.27 0.04 mm (2.767 0.002 inch).    
Installation depth is
7.5 0.3 mm (0.30 0.01 inch).
A     1     368-3273 Boom Cylinder As     Bore is
119.25 0.15 mm (4.695 0.006 inch).    
B     1     296-3265 Cylinder Rod and Bearing As     Diameter is
84.93 0.03 mm (3.344 0.001 inch).    
2     8     7Y-5216 Bolt     Torque to
520 70 N m (384 52 lb ft).    
C     1     112-6418 Head     Bore over two lands is
85.63 0.03 mm (3.371 0.001 inch).    
3     1     258-8505 Bushing     Bore before assembly is
90.31 0.04 mm (3.556 0.002 inch).    
Installation depth is
9.5 0.3 mm (0.37 0.01 inch).
4     1     147-5835 Special Locknut     Before assembly, lubricate the face and the thread all around with 309-6932 Hydraulic Oil .    
Torque to
5900 300 N m (4352 221 lb ft).
5     2     158-9063 Ring     Lubricate the inside diameter and the outside diameter with clean grease.    
6     1     9X-3592 Seal As     Lubricate the inside diameter and the outside diameter with clean grease.    
7     1     179-9674 Ring     Lubricate the inside diameter and the outside diameter with clean grease.    
8     1     6I-6786 Seal Ring     The slit of seal ring must turn in direction of the piston.    
9     1     114-0756 Bushing     Outside diameter before assembly is
90.133 0.033 mm (3.5485 0.0013 inch).    
Thickness is
2.475 0.025 mm (0.0974 0.0010 inch).
10     1     170-9844 Buffer Seal     Lubricate the sealing lip lightly with the lubricant that is being sealed.    
11     1     170-9860 U-Cup Seal     Lubricate the sealing lip lightly with the lubricant that is being sealed.    
12     1     165-9286 Lip Type Seal     Lubricate the sealing lip lightly with the lubricant that is being sealed.    
Before assembly, apply green Loctite 609 to the wiper seal groove.