NET HORSEPOWERWA250-6: 103 kW 138 HP @ 2000 rpmWA320-6: 125 kW 167 HP @ 2000 rpm

OPERATING WEIGHTWA250-6: 11820 kg 26,059 lbWA320-6: 15327 kg 33,790 lb

BUCKET CAPACITYWA250-6: 3.1 m3 4.0 yd3

WA320-6: 4.2 m3 5.5 yd3

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WA250-6WA320-6

WasteHandler

Photo may include optional or non-OEM equipment.

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H S T W a S T E T r a n S f E r S T a T i O n l O a d E r S

Walk-arOund

Waste Transfer Station LoadersThe Komatsu-integrated design found in the HST loader line offers exceptional value, reliability, and versatility.Hydraulics, power train, frame, and major components are engineered and manufactured by Komatsu to worktogether for higher productivity and less downtime. The Komatsu-designed waste transfer station package isspecifically matched to the loader and application.

Waste handling bucket designed for either loadingor pushing and loading waste quickly and efficiently.The bucket features high strength steel, a spill guarddesigned for increased visibility, and a visual bucketlevel indicator. Side stiffeners add durability.

Low Fuel Consumption The high-torque engine and HydrostaticTransmission (HST) with maximum efficiency in thelow-speed range provide low fuel consumption

Electronically-controlled HST using a 1-pump,2-motor system allows high efficiency, high tractiveeffort, quick travel response and aggressive drive intothe pile. The full auto shifting eliminates manual gearshifting and kick-down operations.

Piston PumpEngine

Low speedpistonmotor

High speedpistonmotor

Transfer case

To differentials

Variable Traction Control SystemThe tractive effort of the machine, whentraveling at a low speed, can be reduced byusing the traction control switch. Combinedwith torque proportioning differentials, oroptional limited slip differentials this systemprovides the following benefits:

• Facilitates operation on soft ground wherethe tires of the machine are apt to slip

• Eliminates excessive bucket penetration and reduces tire slippage during stockpile loading to improve the work efficiency

• Reduces tire slippage to extend the life of tires

Furthermore, the maximum tractive effort can beadjusted in three stages (onestage for conventional machines)when the traction control switch isON. This allows the operator toselect the optimum tractive effortfor diversified road conditions.

Max. tractive effort can be adjusted in 3 stages when the traction control switch is ON.

Max: Traction control switch is OFF.(Max. tractive effort)

0 Travel speed

Trac

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WA250-6WA320-6

nET HOrSEPOWErWa250-6

103 kW 138 HP @ 2000 rpm

Wa320-6125 kW 167 HP @ 2000 rpm

OPEraTinG WEiGHTWa250-6: 11820 kg 26,059 lbWa320-6: 15327 kg 33,790 lb

BuCkET CaPaCiTYWa250-6: 3.1 m3 4.0 yd3

Wa320-6: 4.2 m3 5.5 yd3

Automatic Reversible FanThe engine fan is driven hydraulically and can beoperated in reverse automatically. When the switch isin the automatic position, the fan revolves in reverseintermittently for 2 minutes every 2 hours. (default setting)

Full side opening gull-wing engine doorsGround level engine service and daily service checksare made easy with the gas spring-assisted side-opening gull-wing doors

Adjustment-Free Brakes• Service brakes are wet, multi-disc, in-board packs• The parking brake is a separate wet multi-disc pack with lever control

Standard cab with air-conditioning system whichpressurizes the interior to help keep dust out. Two-tierfiltration system not only cleans the incoming air butalso cleans the recirculated air inside the cab. Filters areeasily removed for cleaning or replacement.

High-Rigidity FramesThe front and rear frames, along with the loaderlinkage, have high rigidity to withstand repetitivetwisting and bending loads. Both the upper and lower center pivots have tapered roller bearings for increased durability.

Service Brakes

B: Manual Reverse Mode

a: Normal Rotation Mode

C: Auto Reverse Mode

Photo may include optional equipment

Parking Brake

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H S T W a S T E T r a n S f E r S T a T i O n l O a d E r S

GuardinG fEaTurES

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1. Hydraulic Tank Guard

Provides additional protection from damage by covering the

sides and bottom of the tank. Bolt-on cover allows easy

access for cleaning and maintenance.

2. front frame Guard

Protects and keeps debris away from the components

located within the front frame. Bolt-on hinged cover allows

easy access for cleaning and maintenance.

3. Powertrain Bottom Guard

Protects and helps keep debris away from the components

located within the rear frame. Bolt-on hinged cover allows

easy access for cleaning and maintenance.

4. fuel Tank Guard

Protects and helps keep debris away from the fuel tank.

Bolt-on covers allow easy access for cleaning and

maintenance.

5. Boom Cylinder and Hose Guards

Box-type steel structures helps prevent debris from

reaching the hoses and tubes from the bottom and side.

6. axle Seal Guards

Protect the axle seals should material wrap around the

axles during operation.

nOTE: Please read and follow all maintenance and cleaning instructions for this product as set forth in the operationand maintenance manual. The waste handler features of this product are no substitute for regular maintenance andcleaning in an effort to prevent debris accumulation in the engine compartment and on hot component surfaces.

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Heavy-duty Head light/Tail light Guards

Headlights are moved inward and metal guarding protects

the headlights and tail lights from debris that may break or

damage the lenses.

Wide Core radiator

The wide core radiator fin density was decreased from

14.5 to 6.35 fins per inch to provide large fin spacing and

help keep the core clean and air flowing for cooler

operation.

radiator air inlet Protection

Heavy-duty screening over the air entry locations has

4 mm 0.16" perforations to limit debris entry. Plus, additional

screened air inlets on the top and side of the hood more than

double the area for air to enter. The additional openings slow

the air velocity passing through the debris screens reducing

debris sticking. Sheet metal gaps are sealed to help prevent

debris entry.

By guarding exposed components, reducing debris entry, and making it easy to clean and service,the Komatsu loader stays working longer for increased productivity.

WA250-6WA320-6

WaSTE-SPECifiC fEaTurES

nOTE: Please read and follow all maintenance and cleaning instructions for this product as set forth in the operationand maintenance manual. The waste handler features of this product are no substitute for regular maintenance andcleaning in an effort to prevent debris accumulation in the engine compartment and on hot component surfaces.

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H S T W a S T E T r a n S f E r S T a T i O n l O a d E r S

Windshield Guard

Designed to maximize operator visibility while minimizing

the possibility of glass breakage.

air Pre-Cleaner

Turbo II® brand pre-cleaners are available for increased air

cleaner efficiency.

Comforts of Home

The large cab offers a large lunch box holder, a variety of

cup and bottle holders, and a storage area. Air conditioning

and optional AM/FM cassette stereo system create a

comfortable and controlled work environment.

Additional cab features include:

• Industry-leading low operator noise level at 70 dB(A)

• Large cab glass area

• Suspension seat for more comfort. An air-suspension seat

is an available option.

• Viscous mounts reduce vibration and noise

• Electronically-controlled hydrostatic transmission with

fully-automatic shifting. This allows the operator to

concentrate on production without concern for shifting or

kick-down.

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SPECifiCaTiOnS

WA250-6WA320-6

*Bucket at carry position, outside corner of bucket at the end of BOCE. ** At the end of BOCE.

All dimensions, weights, and performance values based on SAE J732c and J742b standards. Operating weight shown includeslubricant, coolant, full fuel tank, ROPS cab, tires as indicated, operator, and waste handler packages (full waste package), andRockland® trash handling bucket with bolt-on cutting edge. Rockland® is a registered trademark for Rockland Manufacturing Co.,Bedford, PA.

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Model WA250-6 WA250-6 High Lift WA320-6 WA320-6 High Lift

Trash Bucket Trash Bucket Trash Bucket Trash Bucket

Bucket capacity, heaped 3.1 m3 4.0 yd3 3.1 m3 4.0 yd3 4.2 m3 5.5 yd3 4.2 m3 5.5 yd3

Bucket width 2692 mm 8'10" 2692 mm 8'10" 2743 mm 9'0" 2743 mm 9'0"

Bucket weight 1041 kg 2,295 lb 1041 kg 2,295 lb 1424 kg 3,140 lb 1424 kg 3,140 lb

Net horsepower 103 kW 138 HP 103 kW 138 HP 125 kW 167 HP 125 kW 167 HP

Engine model SAA6D107E-1 SAA6D107E-1 SAA6D107E-1 SAA6D107E-1

Static tipping load: straight 9907 kg 21,842 lb 8244 kg 18,176 lb 12694 kg 27,985 lb 9513 kg 20,973 lb

Static tipping load: 40° full turn 8719 kg 19,221 lb 7255 kg 15,995 lb 11285 kg 24,879 lb 8457 kg 18,645 lb

Tread 1930 mm 6'4" 1930 mm 6'4" 2050 mm 6'9" 2050 mm 6'9"

Width over tires 2464 mm 8'1" 2464 mm 8'1" 2585 mm 8'6" 2585 mm 8'6"

A Wheelbase 2900 mm 9'6" 2900 mm 9'6" 3030 mm 9'11" 3030 mm 9'11"

B Hinge pin, max height 3795 mm 12'5" 4391 mm 14'5" 3905 mm 12'10" 4545 mm 14'11"

C Hinge pin height, carry position 450 mm 1'6" 615 mm 2'0" 390 mm 1'3" 645 mm 2'1"

D Ground clearance 446 mm 1'5" 446 mm 1'5" 406 mm 1'4" 406 mm 1'4"

E Overall height, ROPS Cab 3251 mm 10'8" 3251 mm 10'8" 3200 mm 10'6" 3200 mm 10'6"

F Dump clearance, max. height, 45° angle** 2599 mm 8'6" 3521 mm 11'6" 2518 mm 8'3" 3159 mm 10'4"

G Maximum roll-back at carry 45° 50° 45° 49°

Reach at 2130 mm 7', 45° dump angle** 1748 mm 5'8" 2218 mm 7'3" 1697 mm 5'7" 2300 mm 7'7"

Reach at max. height, 45° dump angle** 1253 mm 4'1" 944 mm 3'1" 1542 mm 5'1" 1351 mm 4'5"

Reach with arm horizontal, bucket level** 2587 mm 8'5" 3056 mm 10'0" 3254 mm 10'8" 3972 mm 13'0"

Operating height, fully raised 5287 mm 17'4" 5882 mm 19'3" 6205 mm 20'4" 6655 mm 21'10"

Overall length, bucket on ground 7413 mm 24'3" 9077 mm 29'9" 8301 mm 27'3" 9142 mm 30'0"

Loader clearance circle* 12240 mm 40'2" 12770 mm 41'11" 12767 mm 41'11" 13286 mm 43'7"

Breakout force 9105 kg 20,072 lb 8756 kg 19,303 lb 9361 kg 20,637 lb 9732 kg 21,456 lb

Operating weight 11820 kg 26,059 lb 12027 kg 26,515 lb 15327 kg 33,790 lb 15508 kg 34,190 lb

Measured with 20.5-25 12PR (L2) Tires

STANDARD EQUIPMENT

OPTIONAL EQUIPMENT

Refer to the regular WA250-6 and WA320-6specification sheets for a listing of allstandard equipment.

• 3-spool valve, with lever and piping• Air suspension seat• AM/FM stereo radio cassette• Auxiliary steering• Engine pre-cleaner• High lift arrangement• Limited slip differential (F&R)

Waste Handler ArrangementRecommended base machine options:• Engine pre-cleaner, ILOS• Limited-slip differentials, ILOS• Standard boom or high-lift boom, ILOS• Wide core radiator

Arrangement options:• Axle seal guards• Boom cylinder and hose guard• Front frame bottom guard• Front frame step (WA320)• Front light guards• Fuel tank guard• High-debris cooling fan package• Hydraulic tank guard• Powertrain bottom guard• Rear light guards• Waste handler bucket*

- WA250-6: 3.1 m3 4.0 yd3

- WA320-6: 4.2 m3 5.5 yd3

*Rockland® buckets can only be ordered with waste handler packages.

• Windshield guard

AESS809-00 ©2010 Komatsu America Corp. Printed in USA D04(1.5M)OSP 04/10 (EV-1)

www.KomatsuAmerica.com Komatsu America Corp. is an authorized licensee of Komatsu Ltd.Materials and specifications are subject to change without notice

is a registered trademark of Komatsu Ltd., JapanKOMTRAX® is a registered trademark of Komatsu America Corp.