OM4213 7/11 Automatic Lubrication System - Section 42
Page 42-7
INJECTORS (SL-1 Series “H”)
Injector Specifications
• Each lube 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 in turn
controlled by an adjusting screw in the top of the
injector housing.
Turn adjusting screw (1, Figure 42-6)
counterclockwise to increase lubricant amount
delivered and clockwise to decrease the lubricant
amount.
When the injector is not pressurized, maximum
injector delivery volume is attained by turning the
adjusting screw (1) fully counterclockwise until the
indicating pin 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. 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 minimum delivery point with about 0.22 mm
(0.009 in.) thread showing.
NOTE: The above information concerns adjustment
of 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 1/4 capacity.
FIGURE 42-6. TYPE SL-1 INJECTOR
1. Adjusting Screw
2. Locknut
3. Piston Stop Plug
4. Gasket
5. Washer
6. Viton O-Ring
7. Injector Body Assy.
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
NOTE: The piston assembly (8) has a visible
indicator pin at the top of the assembly to verify
injector operation.
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