ALTERNATOR GP-CHARGING 1123454 - Caterpillar

TYPE="TABLE" @@@-->The main rotating components are drive shaft (1), distributor rotor (16), transfer pump (9) and governor (4). The drive shaft (1) engages the distributor rotor (16) in the hydraulic head (14). The drive end of the distributor rotor (16) has two or four plungers (13). The plungers (13) are moved toward each other simultaneously by an internal cam ring (5) through rollers (6) and shoes. The rollers and shoes are positioned in slots at the drive end of distributor rotor (16) .The transfer pump (9) is located at the rear of distributor rotor (16) in the end cap. The end cap also contains the strainer for the fuel inlet and the pressure regulator (10) for the transfer pump. The transfer pump has a positive displacement vane. The pressure that is generated by the transfer pump is automatically compensated for the effects of viscosity due to temperature changes and fuel grades. The distributor rotor (16) has a single axial bore with the following passages:
Two charging ports
One discharge portThe single discharge port serves all of the head outlets to the fuel injection lines. Hydraulic head (14) consists of the following parts:
The bore for the rotor
The bore for metering valve (7)
The charging ports
Discharge fittings (8) of the headThe high pressure fuel lines to the fuel injection nozzles are fastened to these discharge fittings (8). The fuel injection pump contains a mechanical governor (4). The centrifugal force of the governor flyweights (3) that are in the retainer is transferred through the following items: a sleeve to the governor arm, linkage and metering valve (7). The timing advance (12) is a hydraulic mechanism. The timing advance unit performs one of the following functions:
Advance the delivery of fuel.
Retard the delivery of fuel.An electrical stop solenoid is contained inside the governor housing. The electrical ground is on top of the governor housing. The supply connections are on the top of the governor housing. When the voltage is applied, the plunger of the solenoid moves in order to block the flow of fuel to the engine. When the fuel flow is stopped, the engine stops.Components and Features of the Stanadyne Fuel Injection Pump
Illustration 6 g00297106
Components of the fuel injection pump (Stanadyne) (1) Electrical connection for stop solenoid (2) Connection for fuel return line (3) Low idle speed screw (4) High idle speed screw (5) Flange nut (6) Nut for end cap (7) Fitting for fuel discharge (8) High pressure fuel injection lines (9) Adjustment screw for timing advanceThe Stanadyne fuel injection pump is installed on the naturally aspirated engines.The internal adjustment for the fuel injection pump timing is tamper proof. The low idle is adjustable. The fuel injection pump has a boost control and an engine stop solenoid. The pump also has a self-vent feature which removes air from the pump.The fuel injection pump has an electrically operated automatic timing advance unit which holds the timing of the pump in an advanced position when the engine is cold. The advance lever of the pump is enclosed