PANEL 3455074 - Caterpillar

Introduction
This Special Instruction provides the information that is necessary to install 255-5716 Control Valve and Mounting Gp on Certain 320D Excavators.Safety Section
Personal injury can result from hydraulic oil pressure and hot oil.Hydraulic oil pressure can remain in the hydraulic system after the engine has been stopped. Serious injury can be caused if this pressure is not released before any service is done on the hydraulic system.Make sure all of the attachments have been lowered, and the oil is cool before removing any components or lines. Remove the oil filler cap only when the engine is stopped, and the filler cap is cool enough to touch with your bare hand.
Required Parts
Refer to Table 1 for the required parts in order to install 255-5716 Control Valve and Mounting Gp .
Table 1
Required Parts    
Item    Qty    Part Number    Description    
1     2     4J-8998     O-Ring Seal    
2     5     453-4169     Bolt (M16x2x200mm)    
3     1     244-8419     Control Valve Gp    
4     1     259-7378     Control Valve Gp    
5     2     1P-3702     Rectangular Seal    Installation Procedure
Illustration 1 g01944344
Install seals (1) and seals (5) on valve group (3) and valve group (4) .
Install valve group (3) on main control valve (A) then install valve group (4) .
Install the 4 bolts (2) and torque to 240 40 N m (177 30 lb ft).