Automatic Lubrication System - Section 42 OM4202 Page 42-10 FIGURE 42-6. SYSTEM HYDRAULIC SCHEMATIC 1. Grease Pump Cylinder 2. Grease Pump 3. Grease Reservoir 4. Vent Valve 5. Combination Valve (Pressure Reducing & Solenoid Valves) 6. Solenoid (SV2) 7. Pressure Reducer 8. Solenoid (SV1) 9. Gauge (Cylinder Pressure) 10. Safety Unloader Valve 11. Orifice Assembly Fitting 12. Hydraulic Supply 13. Hydraulic Tank (Return) 14. Injectors FIGURE 42-7. ELECTRICAL HOOKUP - TYPICAL 1. Timer Assembly 2. Combination Valve 3. Keyswitch * 4. Relay 5. Timer (Solid State) 6. Solenoid (SV1) 7. Solenoid (SV2) 8. Battery (24V) 9. Cycle Timer * The keyswitch must be in the ON position to energize timer (1).