OM4202 Automatic Lubrication System - Section 42 Page 42-9 When the injector is not pressurized, maximum injec- tor delivery volume is attained by turning adjusting screw (2) fully counterclockwise until indicating pin (1) just touches the adjusting screw. At the maximum delivery point, about 9.7 mm (0.38 in.) adjusting screw threads should be showing. Decrease the delivered lubricant amount by turning the adjusting screw clockwise to limit injector piston travel. Pump Cycle Timer (Flasher Timer) Adjustment: The pump cycle timer is factory set at 1 second ON and 1 second OFF for 30 cycles/minute. If adjust- ment is necessary, refer to Figure 42-5 and the fol- lowing procedure.
The one adjustment screw adjusts both the ON time and OFF time equally. The adjustment range is from 0.5 seconds (60 cycles/minute) to 5.0 seconds (6 cycles/minute). The adjustment screw allows 15 turns of adjustment over the timing range. If only half the lubricant is needed, turn the adjusting screw to the point where about 4.8 mm (0.19 in.) threads are showing. The injector will be set at mini- mum delivery point with about 0.22 mm (0.009 in.) thread showing. 1. Adjustment screw (1) should be turned 20 turns counter-clockwise to insure a minimum start point. NOTE: The foregoing information concerns adjustment of the injector delivery volume.
The timer adjustment should also be changed, if overall lubricant delivery is too little or too much. Injector output should NOT be adjusted to less than one- fourth capacity. NOTE: The timer cannot be adjusted below minimum - additional turns counter-clockwise have no effect. 2. Each clockwise turn of the adjustment screw will equal approximately 0.3 seconds. 3. Add the number of turns clockwise to reach the approximate desired timing. Some additional adjustment may be necessary depending on the accuracy needed. Pump Cycle Timer (Flasher Timer): The pump cycle timer mounts on the SV2 solenoid and generates a timed pulse signal to control the reciprocating cycle rate of the grease pump.
NOTE: Use the LED on the cycle timer to help in setting the time. The LED will turn on when there is power going to SV2. Pump Cycle Timer (Flasher Timer) Installation 1. Connect the cycle timer to SV2. Be sure to install a gasket. 2. Connect the SOL terminal from the solid state timer to the brown wire from the cycle timer and one of the wires coming from SV1. 3. Connect the white wire from the cycle timer and the other (gnd) wire coming from SV1. FIGURE 42-5. PUMP CYCLE TIMER 1. Adjustment Screw 2. Red LED* *NOTE: Indicates the timer has turned on.