20405728 Volvo.Penta Sealing ring

Introduction
This Special Instruction provides the procedure for installation of the Engine Cooling Fan Bypass attachments on machines shipped from the factory without the attachment installed.The Engine Cooling Fan Bypass attachment is critical to the successful completion of the Tier IV aftertreatment automatic regeneration when the machine is sitting at low idle in very low ambient −18° C (0° F) conditions. Each piece of the update in this special instruction is critical to the success of this feature.After assembly is complete, prepare the machine for service.Read the information and understand the information in this publication before you perform any procedures.Safety
Do not attempt to assemble this machine until you have read and understand the assembly instructions. Improper procedures could result in injury or death.
Do not let any dirt or foreign material get into the hydraulic system during assembly or maintenance operation. Keep the oil in the hydraulic system at the correct level to prevent pump cavitation.
Required Parts
Table 1
Referenced Parts    
Item    Qty    Pt. No.    Description    
1     3     8T-4195     Bolt    
2     1     420-6436     Bracket As    
3     1     451-1423     Hose As    
4     1     419-6213     Control Manifold Gp    
5     2     6V-8637     Connector    
6     2     160-8492     Bolt    
7     1     4P-7581     Clip    
8     5     8T-4121     Hard Washer    
9     2     3D-2824     O-Ring Seal    
10     3     6V-9746     O-Ring Seal    
13     1     420-0808     Harness    
15     6     7K-1181     Cable Strap    
16     1     310-1898     Clip    
17     2     4P-7581     Clip    Installing The Engine Cooling Fan Bypass Valve And Bracket
Removal
Put vacuum on the hydraulic tank.
Remove the right-hand engine enclosure door first. Second, remove the lower right-hand enclosure.
Illustration 1 g03158399
Disconnect line (A) at the bottom of the cooler. Cap and retain line for installation.
Cap open connection on cooler (E) .Installation
Illustration 2 g03362597
Bolt bracket assembly (2) to bosses inside right-hand radiator guard with three bolts (1) and three washers (8) .
Illustration 3 g03279417
Inspect control manifold (4). Ensure that solenoid valve (A) is installed in the port closest to port "1". Ensure that the flow control valve is installed in the port closest to port "2". If the valves are not assembled correctly, they will need to be reversed. Tighten the flow control valve to a torque of 47.0 2.5 N m (34.7 1.8 lb ft). Tighten the Solenoid Valve to a torque of 47.5 2.7 N m (35.0 2.0 lb ft).
Illustration 4 g03360428
Install two connectors (5) and two seals (9). As shown in Illustration 4.
Illustration 5 g03360430
Install control manifold (4) to bracket (2) using two washers (8), two bolts (6), and ladder clip (7) .Note: Orientation of ladder clip (7) should be vertical as shown in Illustration 5.Note: Orientation of the control manifo