Injectors (Sl-1 Series H); Injector Specifications; Injector Adjustment - Komatsu 730E Operation & Maintenance Manual

Maintenance - Section 42
Page 42-10

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
equipment.
• Injector Output Volume:
Maximum Output =1.31 cc (0.08 in
Minimum Output = 0.13 cc (0.008 in
• 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 -
3
1.31 cc (0.008 - 0.08 in ) 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.
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: 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.
of external lubricating
3
)
3
)
Automatic Lubrication System
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
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).
07/09 0M4211
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