HARNESS AS 5207000 - Caterpillar

Illustration 1.
Basic layout of the new groups and components in the new fuel filtration system for 3116 and 3126 Industrial Engines. (A) = Fuel Tank.(B) = Governor Fuel Transfer Pump.(C) = Cylinder Head With Mechanical Unit Injectors.(1) = 146-6692 Water Separator and Fuel Filter (10 micron) Group.(2) = 151-5059 Fuel Lines Group.(3) 151-5058 Pump Fastener Group.(4) = 7W-5668 (24 volt) or 7C-9748 (12 volt) Fuel Pump Assembly.(5) = 1R-0751 (short) or 1R-0753 (long) High Efficiency (2 micron) Fuel Filter Assembly.* For standard left side fuel filter position: * (6) = 151-5056 Fuel Lines Group and 151-5057 Fastener Group. * (7) = 149-8283 Fuel Filter Lines Group and 149-8865 Fastener Group. ** For remote or rear fuel filter position: ** (6) = Reuse the existing fuel line between the fuel transfer pump and secondary fuel filter but relocated to provide line from filter outlet to transfer pump inlet.** (7) = 149-8283 Fuel Filter Lines Group and 149-8865 Fastener Group. Provides line from fuel transfer pump outlet to back of cylinder head. This new fuel filtration system is adaptable to the above 3116 and 3126 Industrial Engines.
Illustration 1 shows the basic layout of the new groups and components in the new fuel filtration system for 3116 and 3126 Industrial Engines.
COMPONENT FEATURES
146-6692 Water Separator And Fuel Filter (10 micron) Group
This filter has a 10 micron rating. It operates in series with the secondary fuel filter. Under normal conditions, the filter element will provide the standard 250 hour service interval. The water separator has a "see-through" bowl with a "self-vent" drain for water. The water separator is sized to be adequate for the fuel flow at any 3116 or 3126 rating. Additional options available for this water separator and fuel filter group follow:
* 147-1231 Water Level Indicator.* 147-1227 Bowl with 12 volt fuel heater element. * 147-1229 Bowl with 24 volt fuel heater element.* 147-1230 Seal Kit (to replace seals damaged during element or bowl replacement.7W-5668 (24 volt) Or 7C-9748 (12 Volt) Fuel Pump Assembly
These electric fuel pumps are polarity sensitive. Care must be taken to connect the brown wire from the pump to engine positive (+) and the black wire from the pump to engine negative (-). The pump must be energized ALL THE TIME the engine is running. The pump can be connected in parallel with an energized to run (ETR) fuel shut-off solenoid (be careful with polarity). When connected in parallel with the fuel shut-off solenoid, the fuel system can easily be primed after a filter change, by just turning the key switch to the ON position for approximately one minute.
If a latching solenoid is used, a separate electrical circuit must be considered to supply the electric fuel pump. And additional switch must then be used to operate the priming feature. A 10 amp fuse and 14 to 16 gauge wire are recommended for connecting the electric fuel pump. The electric fuel pump must be mounted rigidly in the fuel lines. The priming feature is important