N5-4
Operator Controls
N05056
PEDAL CONTROLS
THROTTLE PEDAL
The Throttle Pedal (4, Figure 5-4) is a foot operated
pedal which allows the operator to control engine
RPM depending on the amount of pedal depression.
SERVICE BRAKE PEDAL
The Service Brake Pedal (2, Figure 5-4) is a foot
operated pedal controlling a hydraulic valve, which
modulates pressure to the service brakes.
NOTE: Some trucks may be equipped with an
optional
, single brake pedal. This pedal combines
the dynamic retarder and service brake functions on
the same pedal. Trucks with this option will not have
a pedal on the left side (2, Figure 5-4). Refer to
description below.
OPTIONAL DUAL FUNCTION/ SINGLE PEDAL
The optional Dynamic Retarding/Brake pedal is a
single pedal controlling both the retarding and ser-
vice brake functions. With this system, the operator
must first apply maximum dynamic retarding before
the service brakes may be applied.
When the pedal is depressed, the first portion of the
pedal stroke actuates an electronic pedal potentiom-
eter, sending an electrical signal to the Statex III
electrical system, initiating the dynamic retarding
function. The amount of retarding effort applied
depends on the amount of pedal depression, varying
from minimal when lightly depressed to maximum
when the pedal potentiometer signal reaches maxi-
mum voltage as more pressure is applied.
Further pedal depression starts application of the
service brakes as the hydraulic brake valve is actu-
ated. (A slight increase in pedal effort will be felt.)
Note that use of the service brakes also ensures
maximum dynamic retarding has been applied.
Completely depressing the pedal causes full applica-
tion of both dynamic retarding and the service
brakes.
DYNAMIC RETARDING PEDAL
The Dynamic Retarder Pedal (3, Figure 5-4) is a
foot-operated pedal which allows the operator to
slow the truck and maintain a safe productive speed
without the use of the service brakes. For normal
truck operation, only dynamic retarding should be
used to slow and control the speed of the truck. The
Grade/Speed Chart (8, Figure 5-1) should always be
followed to determine MAXIMUM safe truck speeds
for descending various grades with a loaded truck.
Service brakes should be applied only when dynamic
retarding requires additional braking force to slow the
truck speed quickly and to bring the truck to a com-
plete stop.
When dynamic retarding is in operation, the engine
RPM will automatically go to an advance RPM retard
speed setting (usually 1250 RPM)*. Dynamic retard-
ing will be applied automatically, if the speed of the
truck reaches the predetermined overspeed retard
setting. Dynamic Retarding is available in “Forward/
Reverse” at all truck speeds above 0 mph/kph, but is
available in “Neutral” only when truck speed is above
3 mph (4.8 kph).
* NOTE: The exact engine speed in retarding may
vary (1250 - 1650 RPM) due to the temperature of
certain components; this is controlled by the Statex
III control system.
FIGURE 5-4. OPERATOR PEDALS
2. Service Brake Pedal
3. Dynamic Retarder
Pedal
4. Throttle Pedal
Содержание 830E
Страница 1: ...CEBM013200 Shop Manual DUMP TRUCK SERIAL NUMBERS A30708 A30732 ...
Страница 2: ......
Страница 4: ...NOTES ...
Страница 8: ...A 4 Introduction A00032 KOMATSU MODEL 830E TRUCK ...
Страница 9: ... ...
Страница 10: ... ...
Страница 12: ...A2 2 Major Component Description A02063 830E MAJOR COMPONENTS ...
Страница 32: ...A3 18 General Safety and Operating Instructions A03020 NOTES ...
Страница 34: ...A3 20 General Safety and Operating Instructions A03020 ...
Страница 46: ...A3 32 General Safety and Operating Instructions A03020 NOTES ...
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Страница 82: ...NOTES B1 2 Index B01018 ...
Страница 92: ...NOTES B3 6 Dump Body B03018 ...
Страница 94: ...C1 2 Index C01024 NOTES ...
Страница 116: ...NOTES C5 6 Air Filtration System C05012 4 98 ...
Страница 135: ...D02023 24 VDC Electric Supply System D2 17 FIGURE 2 8 CRANKING MOTOR ASSEMBLY ...
Страница 181: ...E02016 2 02 Electrical Propulsion Components E2 25 ...
Страница 228: ...E2 72 Electrical Propulsion Components 2 02 E02016 NOTES ...
Страница 290: ...G2 8 Tires and Rims 04 03 G02004 NOTES ...
Страница 304: ...G3 14 Front Wheel Hub and Spindle 04 03 G03018 NOTES ...
Страница 312: ...H1 2 Index 5 03 H01015 NOTES ...
Страница 324: ...H3 4 Rear Suspensions 4 03 H03015 ...
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Страница 342: ...1 Actuator Base 2 Brake Valve 3 Orfice Set Screw FIGURE 2 3 BRAKE VALVE PARTIAL CUT AWAY J2 6 Brake Circuit J02032 ...
Страница 370: ...J4 10 Brake Circuit Check Out Procedure J04031 NOTES ...
Страница 380: ...J5 8 Rockwell Wheel Speed Front Disc Brakes J05019 NOTES ...
Страница 410: ...L2 4 Hydraulic System L02027 NOTES ...
Страница 426: ...L3 16 Hydraulic Component Repair 7 02 L03026 NOTES ...
Страница 429: ...L04037 Steering Circuit L4 3 FIGURE 4 2 FLOW AMPLIFIER ...
Страница 431: ...L04037 Steering Circuit L4 5 FIGURE 4 3 FLOW AMPLIFIER No Steer ...
Страница 433: ...L04037 Steering Circuit L4 7 FIGURE 4 4 FLOW AMPLIFIER Steering Left ...
Страница 435: ...L04037 Steering Circuit L4 9 FIGURE 4 5 FLOW AMPLIFIER Steering Right ...
Страница 437: ...L04037 Steering Circuit L4 11 FIGURE 4 6 FLOW AMPLIFIER No Steer External Shock Load ...
Страница 441: ...L04037 Steering Circuit L4 15 FIGURE 4 9 CUT AWAY VIEW OF STEERING PUMP ...
Страница 444: ...L4 18 Steering Circuit L04037 NOTES ...
Страница 453: ...L05026 Steering Component Repair L5 9 FIGURE 5 7 FLOW AMPLIFIER VALVE ...
Страница 476: ...L5 32 Steering Component Repair L05026 NOTES ...
Страница 483: ...L07027 Hoist Circuit L7 7 FIGURE 7 6 FLOAT POSITION ...
Страница 485: ...L07027 Hoist Circuit L7 9 FIGURE 7 7 POWER UP ...
Страница 487: ...L07027 Hoist Circuit L7 11 FIGURE 7 8 HOLD POSITION ...
Страница 489: ...L07027 Hoist Circuit L7 13 FIGURE 7 9 POWER DOWN ...
Страница 491: ...L07027 Hoist Circuit L7 15 FIGURE 7 10 FLOAT POSITION ...
Страница 492: ...L7 16 Hoist Circuit L07027 NOTES ...
Страница 504: ...L8 12 Hoist Circuit Component Repair L08031 FIGURE 8 18 HOIST CYLINDER ...
Страница 512: ...L8 20 Hoist Circuit Component Repair L08031 NOTES ...
Страница 523: ...L10016 05 03 Hydraulic Check out Procedure L10 11 FIGURE 10 5 FLOW AMPLIFIER VALVE ...
Страница 532: ...NOTES M1 2 Index M01047 ...
Страница 546: ...NOTES M5 4 Wiggins Quick Fill Fuel System M05002 10 96 ...
Страница 556: ...NOTES M8 6 Special Tools M08005 7 02 ...
Страница 592: ...M9 36 Air Conditioning System 05 02 M09010 for HFC 134a Refrigerant NOTES ...
Страница 596: ...M19 4 Radiator Shutters M19002 NOTES ...
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Страница 678: ...N2 16 Truck Cab 04 03 N02014 NOTES ...
Страница 682: ...N3 4 Cab Components N03018 NOTES ...
Страница 688: ...N4 6 Operator Comfort N04023 NOTES ...
Страница 710: ...N5 22 Operator Controls N05056 NOTES ...
Страница 712: ...P1 2 Index P01028 NOTES ...
Страница 715: ...P02039 Lubrication and Service P2 3 ...
Страница 726: ...P2 14 Lubrication and Service P02039 NOTES ...
Страница 744: ...P3 18 Automatic Lubrication System P03022 NOTES ...
Страница 745: ... 0 0 1 2 0 0 3 3 0 0 1 2 0 4 5 6 7 6 4 ...
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Страница 754: ...R1 2 System Schematics R01060 NOTES ...
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Страница 756: ...Electrical Schematic HH354 Jun 03 Hydrauiic Schematic Brake System 830E Effective with A30650 UP ...
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