16254 4 Mercury FLOAT VALVE

Introduction
This Special Instruction provides a guide for ordering parts to install the new jacket water heater group for 3500 Engines. Additionally, each section contains two reference tables to assist in the proper installation of these new heaters.All Serial Numbers
All engines need two jacket water heater groups. Refer to Table 1 to select the heater with the correct voltage.Note: Caterpillar recommends using a 6Kw heater.
Table 1
Kw     Voltage     Part    
3Kw     120V     430-2750 Jacket Water Heater Gp    
6Kw     240V     430-2751 Jacket Water Heater Gp    
6Kw     480V     430-2752 Jacket Water Heater Gp    Parts Needed for Serial Number Prefixes S/N:TTH, ; S/N:TTD, ; S/N:S2X, ; S/N:S2S, ; S/N:S2R (Marine Only), ; S/N:S2P, and ; S/N:JTS
Table 2
Left-Hand Side Hardware    
Qty    Part    
1     7M-8485 O-Ring Seal    
1     9S-4181 O-Ring Plug    
1     9X-6772 Cable Strap    
1     148-8352 Elbow As    
1     177-1061 Elbow As    
2     369-7765 Adapter As    
1     447-8609 Hose As    
1     447-8614 Hose As    
Table 3
Right-Hand Side Hardware    
Qty    Part    
1     7M-8485 O-Ring Seal    
1     9S-4181 O-Ring Plug    
1     9X-6772 Cable Strap    
1     148-8352 Elbow As    
2     369-7765 Adapter As    
1     447-8610 Hose As    
1     447-8613 Hose As    Note: Clocking is the operation of orienting the bottom "T" to the outlet port of the jacket water heater. Adjust your heater so that it matches the drawing. Refer to Table 4 for clocking visual aids.
Table 4
Reference Material    
430-2745 Jacket Water Heater Gp (Left-Hand Side)    
430-2746 Jacket Water Heater Gp (Right-Hand Side)    Note: Refer to Table 5 for a visual reference when assembling the mounting groups.
Table 5
Reference Material    
430-2764 Jacket Water Heater Mounting Gp (Left-Hand Side) with Alternate Power Distribution Box Location    
430-2766 Jacket Water Heater Mounting Gp (Right-Hand Side) with the 8N-7236 Oil Pan Gp    
430-2767 Jacket Water Heater Mounting Gp (Right-Hand Side) with the 7C-7178 Oil Pan Gp    
447-0815 Jacket Water Heater Mounting Gp (Left-Hand Side) with Standard Power Distribution Box Location    Parts Needed for Serial Number Prefixes S/N:S2J, ; S/N:S2L, ; S/N:TTF, ; S/N:TTC, ; S/N:E3W, and ; S/N:E3Y
Table 6
Left-Hand Side Hardware    
Qty    Part    
1     7M-8485 O-Ring Seal    
1     9S-4181 O-Ring Plug    
1     9X-6772 Cable Strap    
1     148-8352 Elbow As    
2     369-7765 Adapter As    
1     447-8610 Hose As    
1     447-8613 Hose As    
Table 7
Right-Hand Side Hardware    
Qty    Part    
1     7M-8485 O-Ring Seal    
1     9S-4181 O-Ring Plug    
1     9X-6772 Cable Strap    
1     177-1061 Elbow As    
2     369-7765 Adapter As    
1     447-8609 Hose As    
1     447-8613 Hose As    Note: Clocking is the operation of orienting the bottom "T" to the outlet port of the jacket water heater. Adjust your heater so that it matches the drawing. Refer to Table 8 for clocking visual aids.
Table 8
Reference Material    
430-2745 Jacket Water Heater Gp (Left-Hand Side)    
430-2746 Jacket Water Heater Gp (Right-Hand Side)    Note: Refer to Table 9 for a visual reference when assemb