Komatsu HM400-1 User manual

NET HORSEPOWER
321 kW 430 HP
MAXIMUM PAYLOAD
36,5 tonnes
HEAPED CAPACITY
22,3 m3
HM400-1
HM
400
HM400-1
ARTICULATED DUMPTRUCK

WALK-AROUND
HM400-1 ARTICULATED DUMP TRUCK
2
High performance and
environment-friendly
SAA6D140E-3 engine
• NET horsepower 321 kW 430 HP
• Meets stage II directive 97/68/EC
EU emissions
Fully hydraulic articulated
steering
• Light and easy operation
• Minimum turning radius 8,7
Differential locks for excellent traction in rough terrain.
Cooled multiple-disc interaxle lock can be turned on and off during travel.
In addition, the limited slip differentials prevent the tires on either side from
slipping on soft ground for maximum traction.
Wide, spacious cab
• The wide cab offers a comfortable operator environment
• Viscous mounts support the cab while absorbing vibrations and noise
• Interior noise level ISO 6396 79 dB(A)
Tiltable cab
can be tilted rearward to provide easy service.

NET HORSEPOWER
321 kW 430 HP @ 2000 rpm
MAXIMUM PAYLOAD
36,5 tonnes
HEAPED CAPACITY
22,3m3
HM400-1
ARTICULATED DUMP TRUCK
3
Easy-to-Load Body
• Heaped capacity 22,3 m3
• Low loading height 2970 mm
• Robust body constructed of thick wear-resistant steel with
400 Brinell hardness
Maintenance-free
oscillating pivot
means lower operating costs by
eliminating the need for pivot
lubrication.
All terain
Hydro-pneumatic
Suspension.
The hydro-pneumatic
suspension assures a
comfortable ride even
over rough terrain.
Komatsu designed electronically controlled transmission for
a comfortable ride.
F6-R2 counter-shaft type transmission with K-ATOMiCS (Komatsu Advanced
Transmission with Optimum Modulation Control System).
Reliable wet type multiple-disc brake and retarder
• Fully hydraulic controlled wet multiple-disc brake
• Retarder Absorbing Capacity (continuous descent)
405 KW 544 hp
583 kw 782 hp (with engine exhaust brake)
Meets ISO 3450 - 1996, SAE S1473

4
PRODUCTIVITY FEATURES
HM400-1 ARTICULATED DUMP TRUCK
The combination of high travel speeds and an efficient engine with low
emissions delivers maximum productivity at the lowest cost.
High Performance SAA6D140E-3 Engine
This engine delivers faster acceleration and higher
travel speeds with the highest horsepower per ton in its
class. Advanced technology, such as high-pressure
electronic controlled injection system (CRI), air to air
aftercooler, and an efficient turbocharger enabling the
engine to meet the European stage II emission require-
ments. High torque at low speed, impressive accelera-
tion, and low fuel consumption ensures maximum pro-
ductivity.
Komatsu Designed Differential
Locking Systems
The full-time six-wheel drive system
reduces slippage. A wet multiple-disc
interaxle clutch also locks the three axles
in unison for greater traction. The
interaxle can be switched on and off
while the truck is travelling, thereby
boosting productivity. In addition, limited
slip differentials prevent the tires on
either side from slipping on soft ground.
Komatsu Designed Electronically
Controlled Transmission
The Komatsu designed Electronically Controlled
Transmission called K-ATOMiCS has been
successfully employed in Komatsu's rigid dump
trucks. The electronic clutch modulation system
ensures proper clutch pressure when the clutch is
engaged. The total control system controls both the
engine and transmission by monitoring the vehicle
conditions. This high technology system assures
smooth shifts without shock.

Large Capacity Body and Box
Section Frame Structure
The 22,3 m3heaped capacity is among the
highest in its class. The low loading height
of 2.970 mm enables easy loading. The
body is built of thick wear-resistant steel
with a Brinell hardness of 400, and the
body shape provides excellent load
stability. Rugged enough for the
toughest jobs, the HM400's
frame is designed using a
rigid box structure with
high strength low alloy
steel.
5
HM400-1
ARTICULATED DUMP TRUCK
8,7 m
Hydro-pneumatic Suspension
The hydro-pneumatic suspension has been proven on Komatsu's rigid dump
trucks. The front axle suspension employs "De Dion" type design, allowing the
machine to ride more smoothly over bumps. The rear-axles are mounted on a
dynamic equalizer structure equipped with hydropneumatic suspension. The entire
vehicle's suspension delivers a comfortable ride and maximizes the productivity.
Fully Hydraulically Controlled Wet
Multiple-Disc Brakes and Retarder
Wet multiple-disk brakes have been proven on
Komatsu rigid dump trucks and wheel loaders. They
ensure highly reliable and stable brake performance.
Articulated Steering
Fully hydraulic articulated steering offers low-effort
operating performance and maneuverability.
A minimum turning radius of only 8,7 m provides the
freedom to move about in confined areas.

OPERATOR ENVIRONMENT
HM400-1 ARTICULATED DUMP TRUCK
Wide, Spacious Cab
The wide cab provides a comfortable space for the
operator and a full size trainer seat with underseat
storage space. Large electrically operated windows
and the operator's seat positioned to the left side
ensures superior visibility.
Ergonomically Designed Cab
The ergonomically designed operator's compartment
makes it very easy and comfortable for the operator
to use all the controls. The result is more confident
operation by operators and greater productivity
Easy-to-See Instrument Panel
The instrument panel makes it easy to monitor critical
machine functions. In addition, a caution light warns
the operator of any problems that may occur.
Problems are recorded in the monitor and indicated
as service codes. This makes the machine very
friendly and easy to service.
Steering Wheel and Pedals
Low effort pedals reduce operator fatigue when
working continuously for long periods. The tiltable,
telescopic steering column enables operators to
maintain the optimum driving position at all times.
6
Komatsu has developed a state-of-the-art, wide comfortable cab.
The low level of vibration and noise ensure maximum productivity from
the operator.

HM400-1
ARTICULATED DUMP TRUCK
7
Built-in ROPS/FOPS
These structures conform to ISO 3471 and SAE
J1040-1988 standards.
All Terrain Hydro-pneumatic Suspension
The hydro-pneumatic suspension assures a
comfortable ride even over rough terrain and ensures
maximum productivity and operator confidence.
Viscous Cab Mounts
Viscous mounts reduce the noise transmitted to the
cab and achieve 79 dB(A) noise level. (ISO 6396)
Air Suspension Seat
The air suspension, fabric-covered seat which is
adjustable to the operator's weight is provided as
standard. The air suspension seat dampens
vibrations transmitted from the machine and reduces
operator fatigue as well as holding the operator
securely to assure confident operation.
Electric Body Dump Control Lever
The low effort lever makes dumping easier than ever.
Supplementary Steering
Supplementary steering is a standard feature.
Meets: ISO 5010-1992, SAE J1511

EASY MAINTENANCE
HM400-1 ARTICULATED DUMP TRUCK
8
Tiltable Cab
The cab can be tilted rearward to provide easy
maintenance/service for the engine and transmission.
Fewer Grease Points
The number of grease points are minimized by using
maintenance-free rubber bushings and a
maintenance-free oscillating hitch.
Extended Service Intervals
In order to minimize operating costs, service intervals
have been extended:
•Engine oil 500 hours
•Transmission oil 1.000 hours
•Engine and transmission filters 500 hours
The HM400-1 has been designed to keep service time down and
productivity up by having a maintenance-free oscillating pivot,
a reduced number of grease points, easy access to filters, and longer
intervals between oil changes.
Supplementary Protection
The following guards are provided
as standard:
•Protective grill for
rear window
•Engine underguard
•Transmission underguard
•Propeller shaft guards
•Exhaust thermal guard
•Fire prevention covers
Oil seal Taper roller bearing
Easy acces for filters and lubricants

HM400-1
ARTICULATED DUMP TRUCK
9
SPECIFICATIONS
ENGINE
TRANSMISSION
Model . . . . . . . . . . . . . . . . . . . . . . . . . . . . Komatsu SAA6D140E-3
Type . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Water-cooled, 4-cycle
Aspiration . . . . . . . . . . . . Turbo-charged and air-to-air after-cooled
Number of cylinders . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
Bore . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 140 mm
Stroke . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 165 mm
Piston displacement . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15,2 ltr
Performance:
Gross horsepower . . . . . . . . . . . . . . . . . . . . . . . 331 kW 444 HP
Flywheel horsepower . . . . . . . . . . . . . . . . . . . . 321 kW 430 HP
Rated RPM . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2000 RPM
Maximum torque . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1990 Nm
Fuel system . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Direct injection
Governor . . . . . . . . . . . . . . . . . . . . . . . . . Electronically controlled
Lubrication system
Method . . . . . . . . . . . . . . . . . . . . . Gear pump, force-lubrication
Filter . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Full-flow type
Air cleaner . . . . . . . . . . . . . . . .Dry type with double elements and
precleaner, plus dust indicator
Torque converter . . . . . . . . . . . . . . . 3-elements, 1-stage, 2-phase
Transmission . . . . . . . . . . . . . . . Full-automatic, counter-shaft type
Speed range . . . . . . . . . . . . . . . . 6 speeds forward and 2 reverse
Lockup clutch . . . . . . . . . . . . . . . . . . . . . . . Wet, single-disk clutch
Forward . . . . . . . . . . . . . . . . . . .Torque converter drive in 1st gear,
direct drive in 1st lockup and all higher gears
Reverse . . . . . . . Torque converter drive and direct drive in all gear
Shift control . . . . . . . . . . . . . Electronic shift control with automatic
clutch modulation in all gear
AXLES
SUSPENSION SYSTEM
Front . . . . . . . . . . . . . . . . . . . . . . . . Hydro-pneumatic suspension
Rear . . . . . . . . . . . . . . . . . . . . . . . . . . Combined hydro-pneumatic
and rubber suspension system
STEERING SYSTEM
Type . . . . . . . . . . . . Articulated type, fully hydraulic power steering
with two double-acting cylinders.
Supplementary steering . . . . . . . . . . . . . . . Automatically actuated,
electrically powered (meets SAE J695B)
Minimum turning radius, wall to wall . . . . . . . . . . . . . . . . . . . 8,7 m
Articulation angle . . . . . . . . . . . . . . . . . . . . . . . . 45°each direction
BRAKES
Service brakes . . . . . . . . . . . . . . . Full-hydraulic control, oil-cooled
multiple-disc type on all wheels
Parking brake . . . . . . . . . . . . . . . . Spring applied, caliper disc type
Retarder . . . . . . . . . . Front and center axle brakes act as retarder
Secondary retarder . . . . . . . . . . . . . . . . . . . . . . . Engine exhaust
MAIN FRAME
Type . . . . . . . . . . . . . . . . . . . . . . . Articulated type, box-sectioned
construction on front and rear
BODY
Capacity:
Struck . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16,5 m3
Heaped (2:1, SAE) . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22,3 m3
Payload . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 36,5 metric tons
Material . . . . . . . . . . . . . . . . 130 kg/mm3, hardness 400 BRINELL,
high tensile strength steel
Plate thickness:
Bottom . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16 mm
Front . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8 mm
Sides . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12 mm
Target area
(inside length x width) . . . . . . . . . . . . . . . . 5629 mm x 3194 mm
HYDRAULIC SYSTEM
Hoist cylinder . . . . . . . . . . . . . . . . . . Twin, 2 -stage telescopic type
Relief pressure . . . . . . . . . . . . . . . 20,6 Mpa 210 kg/cm22.990 psi
Hoist time . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12 sec
ENVIRONMENT
Engine emissions . . . . . Fully complies with European stage 2 exhaust
emission regulations
Noise levels at operators ear
inside cabin (dynamic) . . . . . . . . . . . . . . . . .LpA 79 dB(A) ISO 6396
Full time all wheel drive with limited slip differential in all axles.
Final drive type . . . . . . . . . . . . . . . . . . . . . . . . . . . . Planetary gear
Ratios:
Differential . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3,417
Planetary . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4.941
FORWARD REVERSE
Gear 12345612
Km/h 7,2 11,0 16,9 25,8 39,4 58,6 7,4 17,5
miles/h 4,5 6,8 10,5 16,0 24,5 36,4 4,6 10,9

HM400-1 ARTICULATED DUMP TRUCK
10
CAB
Dimensions comply with ISO 3471 and SAE J1040-1988c ROPS
(Roll-Over Protective Structure) standards
TIRES
Standard tire . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 29,5 R25
SERVICE REFILL CAPACITIES
Fuel tank . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 495 ltr.
Engine oil . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 52 ltr.
Torque converter, transmission and retarder cooling . . . . . . 115 ltr.
Differentials (total) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 54.5 ltr.
Final drives (total) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 35 ltr.
Hydraulic system . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 180 ltr.
Suspension (total) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 28.4 ltr.
SPECIFICATIONS
WEIGHT (APPROXIMATE)
Empty weight . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 30.170 kg
Gross vehicle weight . . . . . . . . . . . . . . . . . . . . . . . . . . . 66.745 kg
Weight distribution:
Empty: Front axle . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 55,4%
Center axles . . . . . . . . . . . . . . . . . . . . . . . . . . . 22,3%
Rear axles . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22,3%
Loaded: Front axle . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 28,4%
Center axles . . . . . . . . . . . . . . . . . . . . . . . . . . . 35,8%
Rear axles . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 35,8%
GROUND PRESSURE
At 75 mm ground penetration and with specified weights and tire
pressures:
With tires 29.5 R25 875/65 R29
Unloaded
Front 120 kpa 110 kpa
Rear 80 kpa 70 kpa
Loaded
Front 160 kpa 120 kpa
Rear 170 kpa 160 kpa

HM400-1
ARTICULATED DUMP TRUCK
11
DIMENSIONS
2
9
.
5
R
2
5
2
9
.
5
R
2
5
2
9
.
5
R
2
5
2.690 mm
1.600 mm
1.350 mm 1.970 mm
720 mm
620 mm
7.130 mm
3.450 mm
4.350 mm 1.820 mm
620 mm
3.450 mm 2.885 mm
45˚
26˚
70˚
11.025 mm
5.400 mm
4.170 mm
8.700 mm
2.970 mm
3.700 mm
F1
F2
F3
F4
F5
F6
706050403020100
0
3
5
6
7
8
9
10
20
30
40
50
2
1
4
20 30 40 50 60 70 80 90
35.0
30.0
25.0
20.0
15.0
14.0
13.0
12.0
11.0
10.0
9.0
8.0
7.0
6.0
5.0
4.0
3.0
2.0
0 102030405060708090100
0 102030405060708090100
-10
-15
-20
-25
-30
-5
-35
-40
-45-50
F1
F1
F2
F3
F4 F5
F6
F2
F3
F4
F5 F6
TRAVEL PERFORMANCE BRAKE PERFORMANCE
GROSS WEIGHT
TRAVEL SPEED TRAVEL SPEED
RIMPULL
TOTAL RESISTANCE (GRADE+ROLLING)(%) TOTAL RESISTANCE (GRADE+ROLLING)(%)
EMPTY LOADED
x103kg
x103kg
km/h
x103kg
EMPTY LOADED
km/h
GRADE DISTANCE: CONTINUOUS DESCENT
Increase in width by using 875/65R 29 tyres = 180 mm.
WITHOUT EXHAUST
WITH EXHAUST

EESS015401 1/2003
Komatsu Europe
International NV
Mechelsesteenweg 586
B-1800 VILVOORDE (BELGIUM)
Tel. [phone]
Fax [phone]
www: komatsueurope.com
Printed in Europe - This specification sheet may contain attachments and optional equipment that are not available in your area. Please consult your local Komatsu distributor for those items you may require. Materials and specifications are subject to change without notice.
OPTIONAL EQUIPMENT
TIRES
•Michelin 29.5 R25 XADT tires
•Michelin 875.65 R29 tires
LIGHTS
•Fog Light
•Light for Ladder
•Flashing Amber Beacon
BODY
•Quarry Body 22.3 m3
•Heated Body
•Wire Operated Overhung
Tailgate
•20cm side extensions
•Body wear plates
SECURITY
•Rear view TV Monitor
•Fire Extinguisher
•Additional rearview mirrors
MACHINE
•Tachograph
•Revograph
•Maintenance Monitor
•Electric Fan
•Cold Arrangement (-30)
•Hot and Sandy Arrangement
•Automatic lubrication system
•Engine Oil & Coolant Heater
•30 Ton Jack
•Suspension Gas Tool
•Differential Lock
•Engine Exhaust brake
ARTICULATED DUMP TRUCK
STANDARD EQUIPMENT
ENGINE
•Alternator 75/A24V
•Dual element air cleaner
•Batteries, 170 Ah/2 x 12V
•Electric Governor
•Komatsu SAA6D140E-3 engine
•Exhaust muffler with stack
•Fully automatic K-ATOMIC trans-
mission
•11 KW starte
•Fuel/water separator
CAB
•Dual entry
•Air suspension seat with 78mm
seat belt
•Trainer’s seat
•Air conditioner/heater/defroster
•Provision for Radio Cassette
•Electric windows
•12 Volt Electrical Outlet
•Cigarette Lighter & Ashtray
•Cupholder
•Hazard Warning Lights
•Electronic Hoist control
•Telescopic & Tilting Steering Wheel
•EMS Instrument Panel
•Tiltable cab for easy serviceability
•Windscreen washer and wiper –
front and rear
LIGHTING SYSTEM
•Reverse light
•Hazard light system
•Headlights with dimmer switch
•Stop, tail and turn signal lights
•Front working lights
•Side working lights
MACHINE PROTECTION/
SECURITY
•ROPS/FOPS
•Transmission Guard
•Engine UnderGuard
•Front Propshaft Guard
•Rear Propshaft Guard
•Rear Window Guard
•Supplementary steering
•Emergency Brake
•Overturn warning system
•Underview Mirror
•Rearview Mirrors
•Retarder /brake system continu-
ously cooled
GENERAL
•Spare Parts for First Service
•General Tool Kit
•Cap & Overall
BODY
•22.3m3body
•Muffler No body heating
•Mudflaps in front of leading rear
wheels
STANDARD TYRES
•Michelin 29.5 R25 XADN tyres
MACHINE
•Cab tilt Cylinder
•Central greasing
•Limited Slip Differentials in all
axles
•Back up alarm
•Platform hand rails
•Electric horn
•Interaxle lock clutch type
•Ladders, left & right sides
HM400-1