Komatsu Galeo HM350-1 User manual

GROSS HORSEPOWER
298 kW 399 HP
NET HORSEPOWER
290 kW 389 HP
MAXIMUM GVW
60,925 kg 134,320 lb
ARTICULATED DUMP TRUCK
Photo may include optional equipment

2
HM350-1 Articulated Dump Truck
W ALK
-A ROUND
W ALK -A ROUND
Tiltable cab can be tilted rearward
to provide easy service.
Wide, spacious cab
●The wide cab offers a comfortable operator
environment
●Viscous mounts support the cab while
absorbing vibrations and noise
●Interior noise level 76 dB(A)
High performance and
environment-friendly
SAA6D140E-3 engine
●Gross horsepower 298 kW 399 HP
●Meets North American EPA Tier II
emission regulations for 2001
Fully hydraulic articulated steering
●Light and easy operation
●Minimum turning radius 8.4 m 27'7"
The HM350-1 offers all around maximum productivity with faster travel speed and
many features that enhance efficiency, while reducing maintenance costs. From
construction sites to landfill - the HM350-1 excels.
Building on the technology and expertise Komatsu has
accumulated since its establishment in 1921, GALEO
presents customers worldwide with a strong, distinctive
image of technological innovation and exceptional value.
The GALEO brand will be employed for Komatsu’s full
lineup of advanced construction and mining equipment.
Designed with high productivity, safety and environmental
considerations in mind, the machines in this line reflect
Komatsu’s commitment to contributing to the creation of
a better world.
Genuine Answers for Land & Environment Optimization

Maintenance-free oscillating
hitch with tapered roller bearings
means lower operating costs by
eliminating the need to lubricate the hitch.
3
HM350-1
ARTICULATED DUMP TRUCK
Hydropneumatic Suspension
for all terrains.
The hydropneumatic suspension in both
front and rear suspensions assures a
comfortable ride even over rough terrain.
Interaxle and differential locks for
excellent traction in rough terrain.
The oil-cooled multiple-disc interaxle lock and
differential locks can be turned on and off
during travel. In addition, the differential locks
can lock up all three axles’ differentials for
maximum traction.
Komatsu designed, electronically controlled
transmission for a comfortable ride.
F6-R2 counter-shaft type transmission with K-ATOMiCS
(Komatsu Advanced Transmission with Optimum Control
System).
Reliable, continuously cooled, 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 optional exhaust retarder)
Easy-to-Load Body
●Heaped capacity 19.8 m325.9 yd3
●Low loading height 2840 mm 9'4"
●Robust body constructed of thick wear-
resistant steel having 400 Brinell hardness
GROSS HORSEPOWER
298 kW 399 HP @ 2000 rpm
NET HORSEPOWER
290 kW 389 HP @ 2000 rpm
MAXIMUM GVW
60,925 kg 134,320 lb

Komatsu Designed Interaxle and
Differential Locking Systems
The full-time six-wheel drive system
reduces slippage. A wet multiple-disk
interaxle clutch also locks the three axles
in unison for greater traction. The interaxle
lock and differential locks can be switched
on and off while the truck is travelling,
thereby boosting productivity.
In addition, the differential lock
switch, which is a three position
switch, can lock up the rear axle
differentials only, or all axles for
maximum performance in the
worst conditions.
Komatsu Designed Electronically Controlled
Countershaft 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.
4
The combination of high travel speeds and an efficient engine with low emissions
delivers maximum productivity at the lowest cost.
P RODUCTIVITY
F EATURES
P RODUCTIVITY
F EATURES
High Performance SAA6D140E-3 Komatsu Engine
This engine delivers faster acceleration and higher
travel speeds with the highest horsepower per ton in its
class. Advanced technology, such as Common Rail Injection
system (CRI), air to air aftercooler, and an efficient tur-
bocharger enables the engine to meet the North American
EPA Tier II emission regulations. High torque at low speed,
impressive acceleration, and low fuel consumption ensures
maximum productivity.

Hydraulically Controlled Wet Multiple-Disc Brakes
and Retarder
Wet multiple-disc brakes have been proven on Komatsu
dump trucks and wheel loaders ensuring highly
reliable and stable brake performance. The large-capacity,
continuously cooled,wet-multiple disc brakes also function as
a highly responsive retarder which gives the operator greater
confidence at higher speeds when travelling downhill.
Retarder Absorbing Capacity (continuous descent):
405 kW 544 HP
583 kW 782 HP (with optional exhaust retarder)
Large Capacity Body and Box
Section Frame Structure
The 19.8 m325.9 yd3heaped capacity
is among the highest in its class. The
low loading height of 2840 mm 9'4"
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 HM350’s frame is designed using a
rigid box structure with high strength
low alloy steel.
Articulated Steering
Fully hydraulic articulated
steering offers low-effort
operating performance and
maneuverability. A mini-
mum turning radius of only
8.4 m 27'7" provides the free-
dom to move about in confined
areas.
5
HM350-1
ARTICULATED DUMP TRUCK
8.4 m 27'7"
Hydro-pneumatic Suspension
The hydro-pneumatic suspension has been proven on
Komatsu’s rigid dump trucks. The front axle hydro-pneumatic
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
hydro-pneumatic suspension. The entire
vehicle’s suspension delivers a comfortable
ride and maximizes productivity.

6
O PERATOR
E NVIRONMENT
O PERATOR
E NVIRONMENT
Wide, Spacious Cab with Excellent Visibility
The wide cab provides a comfortable space for the operator
and a full size buddy seat. 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, telescoping steering
column enables operators to maintain the optimum driving
position at all times.
Komatsu has developed a state-of-the-art, wide comfortable cab. The low level of
vibration and noise ensure maximum productivity from the operator.

Built-in ROPS/FOPS
These structures conform to ISO 3471 and SAE J1040-1988
standards.
Hydro-pneumatic Suspension for all Terrains
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 a quiet 76 dB(A) noise level
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 and Secondary Brakes
Supplementary steering and secondary brakes are standard
features.
Steering: ISO 5010-1992, SAE J1511
Brakes: ISO 3450-1996, SAE J1473
HM350-1
ARTICULATED DUMP TRUCK
7

8
Tiltable Cab
The cab can be tilted rearward to provide easy
maintenance/service for the engine and transmission.
Note: An external hydraulic pump is required to tilt the cab
or a service crane can be used after removing only
eight bolts...
E ASY
M AINTENANCE
E ASY
M AINTENANCE
The HM350-1 has been designed to keep service time down and productivity up by
having a maintenance-free oscillating hitch, a reduced number of grease points, easy
access to filters, and longer intervals between oil changes.
Fewer Grease Points
The number of grease points are minimized by using maintenance-free
rubber bushings and a maintenance-free oscillating hitch.
Taper roller bearingOil seal
Guards
The following guards are provided as standard:
●Protective grille for rear window
●Engine underguard
●Transmission underguard
●Propeller shaft guards
●Exhaust thermal guard
●Fire prevention covers
Extended Service Intervals
In order to minimize operating costs, service intervals have been extended:
●Engine oil 500 hours
●Transmission oil 1000 hours
●Engine and transmission filters 500 hours

AXLES
Full time all wheel drive with 100% differential lock in all axles.
Final drive type . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Planetary gear
Ratios:
Differential . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3.231
Planetary . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4.941
TRANSMISSION
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
Maximum travel speed . . . . . . . . . . . . . . . . . . 57.0 km/h 35.4 mph
S PECIFICATIONS
S PECIFICATIONS
WEIGHT (APPROXIMATE)
Empty weight . . . . . . . . . . . . . . . . . . . . . . . . . . 28550 kg 62,940 lb
Gross vehicle weight. . . . . . . . . . . . . . . . . . . . . 60925 kg 134,320 lb
Weight distribution:
Empty: Front axle . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 55.5%
Center axle . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22.25%
Rear axles . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22.25%
Loaded: Front axle . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 30.4%
Center axle . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 34.8%
Rear axles . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 34.8%
ENGINE
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 5.51"
Stroke. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 165 mm 6.50"
Piston displacement. . . . . . . . . . . . . . . . . . . . . . . . . 15.24 ltr 930 in3
Performance:
Gross horsepower . . . . . . . . . . . . . . . . . . . . . . . . 298 kW 399 HP
Flywheel horsepower . . . . . . . . . . . . . . . . . . . . . . 290 kW 389 HP
Rated RPM . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2000 RPM
Maximum torque . . . . . . . . . . . . . . . . . . . . . . . 199 kg•m 1,439 ft. lb
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 (cyclopack type), plus dust indicator
SUSPENSION SYSTEM
Front . . . . . . . . . . . . . . . . . . . . . . . . . . . . Hydro-pneumatic suspension
Rear . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Combined hydro-pneumatic
and rubber suspension system
MAIN FRAME
Type . . . . . . . . . . . . . . . . . . . . . . . . . Articulated type, box-sectioned
construction on front and rear
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 . . . . . . . . . . . . . . . . . . 8.4 m 27'7"
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
BODY
Capacity:
Struck . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14.6 m319.1 yd3
Heaped (2:1, SAE) . . . . . . . . . . . . . . . . . . . . . . . 19.8 m3 25.9 yd3
Payload . . . . . . . . . . . . . . . . . . . . . . 32.3 metric tons 35.6 U.S. tons
Material . . . . . . . . . . . . . . . . . . . . . . . . . . . 130 kg/mm2 184,925 PSI
high tensile strength steel
Material thickness:
Bottom . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16 mm 0.63"
Front. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8 mm 0.31"
Sides . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12 mm 0.47"
Target area
(inside length x width) . . . . . . . 5285 mm x 2995 mm 17'4" x 9'10"
Heating . . . . . . . . . . . . . . . . . . . . . . . . . . . . Exhaust heating (option)
HYDRAULIC SYSTEM
Hoist cylinder . . . . . . . . . . . . . . . . . . . Twin, 2 -stage telescopic type
Relief pressure . . . . . . . . . . . . . . . . 20.6 Mpa 210 kg/cm2 2,990 PSI
Hoist time. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12 sec
CAB
Dimensions comply with ISO 3471 and SAE J1040-1988c ROPS
(Roll-Over Protective Structure) standards
TIRES
Standard tire. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 26.5 R25
SERVICE REFILL CAPACITIES
Fuel tank . . . . . . . . . . . . . . . . . . . . . . . . . . . . 495 ltr. 130.8 U.S. Gal
Engine oil . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 52 ltr. 13.7 U.S. Gal
Torque converter, transmission and
retarder cooling . . . . . . . . . . . . . . . . . . . . . . 115 ltr. 30.4 U.S. Gal
Differentials (total) . . . . . . . . . . . . . . . . . . . . . . . 85 ltr. 22.5 U.S. Gal
Final drives (total). . . . . . . . . . . . . . . . . . . . . . . . . 27 ltr. 7.1 U.S. Gal
Hydraulic system . . . . . . . . . . . . . . . . . . . . . . . 180 ltr. 47.6 U.S. Gal
Suspension (total) . . . . . . . . . . . . . . . . . . . . . . . 20.4 ltr. 5.4 U.S. Gal
HM350-1
ARTICULATED DUMP TRUCK
9

DIMENSIONS
2
6
.
5
R
2
5
2
6
.
5
R
2
5
2
6
.
5
R
2
5
25
2590 mm 8'6"
1600 mm 5'3"
1350 mm
4'5" 1850 mm 6'1"
7035 mm 23'1"
3250 mm 10'8"
4350 mm 14'3"
1645 mm 5'5"
620 mm
2'0"
3250 mm 10'8"
2885 mm 9'6"
10730mm 35'2"
5250 mm 17'3"
4060 mm 13'4"
8400 mm 27'7"
2840 mm 9'4"
3595 mm 11'10"
45
70
1'11"
590 mm
585 mm
1'11"
720 mm 2'4"
F1
F2
F
3
F4
F
5
F
6
35
.
0
40
.
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
010
0 102030405060
20 30 40 50 60 70 80 90 100 km/h
0
0 50 100 150 200
10 20 30 40 50 60 70 80 90 100 103 kg
103 lb
MPH
-10
-15
-20
-25
-30
-5
-35
-40
TRAVEL SPEED
TOTAL RESISTANCE (GRADE + ROLLING) (%)
GROSS WEIGHT
WITHOUT EXHAUST
EMPTY LOADED
WITH EXHAUST(OPTION)
GRADE DISTANCE: CONTINUOUS DESCENT
TRAVEL PERFORMANCE BRAKE PERFORMANCE
10