E
ASY
M
AINTENANCE
HM350
-2
ARTICULATED DUMP TRUCK
HM350
-2
A
R T I C U L A T E D
D
U M P
T
R U C K
S
PECIFICATIONS
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 . . . . . . . . . . . . . . . . . .
57.1 km/h
35.5 mph
ENGINE
Model . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Komatsu SAA6D140E-5
Type . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Water-cooled, 4-cycle
Aspiration . . . . . . . . . . . . . Turbo-charged, after-cooled, cooled EGR
Number of cylinders . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
Bore . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
140 mm
5.51"
Stroke . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
165 mm
6.50"
Piston displacement . . . . . . . . . . . . . . . . . . . . . . . .
15.24 ltr
930 in
3
Horsepower
SAE J1995 . . . . . . . . . . . . . . . . . . . . . . . . Gross
304 kW
408 HP
ISO 9249 / SAE J1349 . . . . . . . . . . . . . . . . . Net
294 kW
394 HP
Rated rpm . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2000 rpm
Fan drive type . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Mechanical
Maximum torque . . . . . . . . . . . . . . . . . . . . . . .
203 kg•m
1,468 lb. ft
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(cyclonpack 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
Connected by strong torque tubes.
STEERING SYSTEM
Type . . . . . . . . . . . . . . . Articulated type, fully hydraulic power steering
with two double-acting cylinders
Supplementary steering . . . . . . . . . . . . . . . . . . Automatically actuated,
electrically powered
Minimum turning radius, wall to wall . . . . . . . . . . . . . . . . .
8.6 m
28'3"
Articulation angle . . . . . . . . . . . . . . . . . . . . . . . . . . . 45° each direction
BRAKES
Service brakes . . . . . . . . . . . . . . . . . . Full-hydraulic control, oil-cooled
multiple-disc type on front and center axles
Parking brake . . . . . . . . . . . . . . . . . . . Spring applied, caliper disc type
Retarder. . . . . . . . . . . . . . Front and center axle brakes act as retarder
WEIGHT (APPROXIMATE)
Empty weight . . . . . . . . . . . . . . . . . . . . . . . . . .
31060 kg
68,500 lb
Gross vehicle weight. . . . . . . . . . . . . . . . . . . . .
63440 kg
139,900 lb
Weight distribution:
Empty: Front axle . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 57.4%
Center axle . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21.6%
Rear axle . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21.0%
Loaded: Front axle . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 31.8%
Center axle. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 34.2%
Rear axle . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 34.0%
BODY
Capacity:
Struck . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
14.6 m
3
19.1 yd
3
Heaped (2:1, SAE) . . . . . . . . . . . . . . . . . . . . . . .
19.8 m
3
25.9 yd
3
Payload . . . . . . . . . . . . . . . . . . . . .
32.3 metric tons
35.6 U.S. tons
Material . . . . . . . . . . . . . . . . . . . . . . . . . . .
130 kg/mm
2
185,000 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) . . . . . . . .
5495 mm x 2935 mm
18'0" x 9'8"
Heating . . . . . . . . . . . . . . . . . . . . . . . . . . . . Exhaust heating (option)
HYDRAULIC SYSTEM
Hoist cylinder . . . . . . . . . . . . . . . . . . . . Twin, 2-stage telescopic type
Relief pressure . . . . . . . . . . . . . . . . .
20.6 MPa
210 kg/cm
2
2,990 psi
Hoist time. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12 sec
CAB
Dimensions comply with ISO 3471 ROPS (Roll-Over Protective
Structure) standard
TIRES
Standard tire. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 26.5 R25
SERVICE REFILL CAPACITIES
Fuel tank. . . . . . . . . . . . . . . . . . . . . . . . . . . .
493 ltr.
130.3 U.S. Gal
Engine oil . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
50 ltr.
13.2 U.S. Gal
Torque converter, transmission and
retarder cooling . . . . . . . . . . . . . . . . . . . . .
115 ltr.
30.4 U.S. Gal
Differentials (total) . . . . . . . . . . . . . . . . . . . . .
82.5 ltr.
21.8 U.S. Gal
Final drives (total) . . . . . . . . . . . . . . . . . . . . . . .
38 ltr.
10.0 U.S. Gal
Hydraulic system. . . . . . . . . . . . . . . . . . . . . . .
180 ltr.
47.6 U.S. Gal
Suspension (total) . . . . . . . . . . . . . . . . . . . . . .
21.2 ltr.
5.6 U.S. Gal
9
8
Tiltable Cab
The cab can be tilted rearward 32 degrees 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 easily remov-
ing only eight bolts...
The HM350-2 has been designed to keep service time down and productivity up by
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.
Guards
The following guards are provided as standard:
●
Protective grille for rear window
●
Engine underguard
●
Heavy duty 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 oil filters 500 hours
●
Transmission oil filters 1000 hours
