Maintenance - Section 42 07/09 0M4211 Page 42-10 Automatic Lubrication System INJECTORS (SL-1 Series H) Injector Specifications Each lubrication injector services only one grease point. In case of pump malfunction, each injector is equipped with a covered grease fitting to allow the use of external lubricating equipment. Injector Output Volume: Maximum Output =1.31 cc (0.08 in 3 ) Minimum Output = 0.13 cc (0.008 in 3 ) Operating Pressure: Minimum - 12 755 kPa (1,850 psi) Maximum- 24 133 kPa (3,500 psi) Recommended - 17 238 kPa (2,500 psi) Maximum Vent Pressure (Recharge):
4 137 kPa (600 psi) Injector Adjustment The injectors may be adjusted to supply from 0.13 - 1.31 cc (0.008 - 0.08 in 3 ) of lubricant per injection cycle. The injector piston travel distance determines the amount of lubricant supplied. This travel is con- trolled by an adjusting screw in the top of the injector housing. FIGURE 42-10. TYPE SL-1 INJECTOR 1. Adjusting Screw 2. Locknut 3. Piston Stop Plug 4. Gasket 5. Washer 6. Viton O-Ring 7. Injector Body Assembly 8. Piston Assembly 9. Fitting Assembly 10. Plunger Spring 11. Spring Seat 12. Plunger 13. Viton Packing 14. Inlet Disc 15. Viton Packing 16. Washer 17. Gasket 18. Adapter Bolt 19. Adapter 20.
Viton Packing Turn adjusting screw (1, Figure 42-10) counterclock- wise to increase lubricant amount delivered and clockwise to decrease the lubricant amount. When the injector is not pressurized, maximum injec- tor delivery volume is attained by turning adjusting screw (1) fully counterclockwise until piston assembly (8) touches the adjusting screw. At the maximum delivery point, about 9.7 mm (0.38 in.) adjusting screw threads must be showing. Decrease the delivered lubricant amount by turning the adjusting screw clock- wise to limit injector piston travel. If only half the lubri- cant 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 the minimum delivery point with about 0.22 mm (0.009 in.) thread showing. NOTE: Piston assembly (8) has a visible indicator pin at the top of the assembly to verify injector operation. NOTE: Piston stop plug (3) must be tightened to 34-41 N·m (25-30 ft lbs) . Adapter (19) must be tightened to 61-68 N·m (45-50 ft lbs) . NOTE: The above information concerns adjustment of injector delivery volume. The timer adjustment must also be changed if overall lubricant delivery is too little or too much. Injector output must not be adjusted to less than one-fourth capacity.