SYSTEM COMPONENTS
Filter (21, Figure 3-2)
A filter assembly mounted on the grease reservoir
filters the grease prior to refilling the reservoir from the
shop supply. A bypass indicator alerts service person-
nel when the filter requires replacement.
Hydraulic Motor and Pump (3 & 8, Figure 3-1)
The rotary hydraulic pump is a fully hydraulically oper-
ated grease pump. An integrated pump control mani-
fold is incorporated with the motor to control input flow
and pressure.
Note: The pump crankcase oil level must be main-
tained to the level of the pipe plug port. If necessary,
refill with 10W-30 motor oil.
Hydraulic oil supply inlet pressure must not ex-
ceed 3000 psi (20 685 kPa). Exceeding the rated
pressure may result in damage to the system com-
ponents and personal injury.
Grease Reservoir (12, Figure 3-1)
The reservoir has an approximate capacity of 60 lbs.
(27 kg) of grease. When the grease supply is replen-
ished by filling the system at the service center, the
grease is passed through the filter to remove contami-
nants before it flows into the reservoir.
Pressure Reducing Valve (4, Figure 3-1)
The pressure reducing valve, located on the manifold
reduces the hydraulic supply pressure (from the truck
steering circuit) to a suitable operating pressure, [325-
350 psi (2 240-2 415 kPa)] for the hydraulic motor used
to drive the lubricant pump.
Flow Control Valve (9, Figure 3-1)
The flow control valve mounted on the manifold, con-
trols the amount of oil flow to the hydraulic motor.
The flow control valve has been factory adjusted
and the setting should not be disturbed.
Solenoid Valve (5, Figure 3-1)
The solenoid valve, when energized, allows oil to flow
to the hydraulic motor.
Vent Valve (6, Figure 3-1)
With the vent valve closed, the pump continues to
operate until maximum grease pressure is achieved.
As this occurs, the vent valve opens and allows the
grease pressure to drop to 0, so the injectors can
recharge for their next output cycle.
Lubrication Cycle Timer (1, Figure 3-4)
The solid state lubrication cycle timer provides a 24
VDC timed-interval signal to energize the solenoid
valve (5, Figure 3-1), providing oil flow to operate the
grease pump motor. This timer is mounted in the
Electrical Interface Cabinet.
Delay Timer (11, Figure 3-4)
The delay timer, located in the Electrical Interface
Cabinet, provides a one minute delay in the low pres-
sure warning lamp circuit to allow a normally operating
system to attain full grease system pressure without
activating the warning lamp. If the system fails to reach
2000 psi (13 789 kPa) within this time period, the timer
will apply 24VDC to several relays which will illuminate
the low pressure warning lamp in the overhead display.
An external 604K ohm resistor determines the delay
period.
Pump Cutoff Pressure Switch (N.O. 2500 psi [17
237 kPa]) (10, Figure 3-1)
This pressure switch de-energizes the pump solenoid
relay when the grease line pressure reaches the switch
pressure setting, turning off the motor and pump.
Grease Pressure Failure Switch (N.O. 2000 psi
[13 789 kPa]) (9, Figure 3-2)
This pressure switch monitors grease pressure in the
injector bank on the rear axle housing. If the proper
pressure is not sensed within 60 seconds (switch
contacts do not close), several relays energize, actu-
ating a warning lamp circuit to notify the operator a
problem exists in the the lube system.
Pressure Gauge (7, Figure 3-1)
The pressure gauge monitors hydraulic oil pressure to
the inlet of the hydraulic motor.
Injectors (24, Figure 3-2)
Each injector delivers a controlled amount of pressur-
ized lubricant to a designated lube point. Refer to
Figure 3-2 for locations.
P03018 4/00
Automatic Lubrication System
P3- 3
Summary of Contents for 930E-2
Page 1: ......
Page 2: ......
Page 4: ...NOTES ...
Page 8: ...KOMATSU MODEL 930E Dump Truck A 4 Introduction A00017 03 01 ...
Page 10: ...NOTES A1 2 Index A01001 2 94 ...
Page 12: ...930E MAJOR COMPONENTS A2 2 Major Component Description A02055 ...
Page 35: ...START HERE Walk Around Inspection A03017 General Safety and Operating Instructions A3 21 ...
Page 46: ...NOTES A3 32 General Safety and Operating Instructions A03017 ...
Page 78: ...NOTES B1 2 Index B01016 ...
Page 88: ...NOTES B3 6 Dump Body B03013 03 01 ...
Page 92: ...NOTES B4 4 Fuel Tank B04015 ...
Page 94: ...NOTES C1 2 Index C01021 03 01 ...
Page 118: ...NOTES C5 6 Air Filtration System C05013 5 98 ...
Page 126: ...NOTES D2 6 24VDC Electric Supply System D02018 ...
Page 142: ...NOTES D3 16 24VDC System Components D03019 04 01 ...
Page 146: ...FIGURE 2 1 PROPULSION SYSTEM DIAGRAM E2 2 Electrical Propulsion System Components E02014 3 01 ...
Page 196: ...NOTES E2 52 Electrical Propulsion System Components E02014 3 01 ...
Page 240: ...NOTES E3 44 AC Drive System Electrical Checkout Procedure 3 01 E03015 Release 17 Software ...
Page 242: ...NOTES G1 2 Index G01017 ...
Page 250: ...NOTES G2 8 Tires and Rims G02015 ...
Page 274: ...NOTES H1 2 Index H01013 04 01 ...
Page 282: ...NOTES H2 8 Front Suspensions H02013 2 01 ...
Page 288: ...NOTES H3 6 Rear Suspensions H03013 ...
Page 334: ...NOTES J3 32 Brake Circuit Component Service J03019 1 99 ...
Page 378: ...NOTES L2 8 Hydraulic System L02028 ...
Page 401: ...FIGURE 4 5 FLOW AMPLIFIER VALVE L04031 Steering Circuit L4 7 ...
Page 403: ...FIGURE 4 6 FLOW AMPLIFIER NO STEER L04031 Steering Circuit L4 9 ...
Page 405: ...FIGURE 4 7 FLOW AMPLIFIER LEFT STEER L04031 Steering Circuit L4 11 ...
Page 407: ...FIGURE 4 8 FLOW AMPLIFIER RIGHT STEER L04031 Steering Circuit L4 13 ...
Page 409: ...FIGURE 4 9 FLOW AMPLIFIER NO STEER EXTERNAL SHOCK LOAD L04031 Steering Circuit L4 15 ...
Page 414: ...NOTES L4 20 Steering Circuit L04031 ...
Page 422: ...NOTES L5 8 Steering Control Unit L05021 ...
Page 429: ...L06021 Steering Circuit Component Repair L6 7 ...
Page 450: ...NOTES L6 28 Steering Circuit Component Repair L06021 ...
Page 466: ...NOTES L7 16 Hoist Circuit L07023 ...
Page 492: ...NOTES L9 6 Hydraulic System Filters L09008 ...
Page 504: ...NOTES L10 12 Hydraulic Check out Procedure L10012 ...
Page 508: ...NOTES M1 2 Index M01034 03 01 ...
Page 518: ...NOTES M2 3 10 Ansul Checkfire Electric Detection and Actuation System M02003 ...
Page 524: ...NOTES M5 4 Wiggins Quick Fill Fuel System M05002 10 96 ...
Page 532: ...NOTES M8 8 Special Tools M08012 9 99 ...
Page 560: ...NOTES M9 28 Air Conditioning System M09010 6 97 for HFC 134a Refrigerant ...
Page 618: ...M20 20 Payload Meter II M20007 10 00 ...
Page 619: ...M20007 10 00 Payload Meter II M20 21 ...
Page 627: ...M20007 10 00 Payload Meter II M20 29 ...
Page 634: ...NOTES N1 2 Index N01020 03 01 ...
Page 654: ...NOTES N3 6 Cab Components N03011 7 98 ...
Page 660: ...NOTES N4 6 Operator Comfort N04020 ...
Page 686: ...NOTES N5 26 Operator Cab Controls N05044 ...
Page 688: ...NOTES P1 2 Index P01024 ...
Page 691: ...P02034 Lubrication and Service P2 3 ...
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Page 737: ...NOTES R1 2 930E Schematics R01048 with Cummins QSK60 Series Engine ...
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