FLYWHEEL HORSEPOWER 40 HP OPERATING WEIGHT D21

1 COMPACTDOZER21 DPhotos may include optional equipmentFLYWHEEL kW 40 HP @ 2450 rpmOPERATING WEIGHT3950 kg - 4180 kg8710 lb - 9220 lbD21 Walk-Through Operator s Compartment:The operator s compartment is ergonomicallydesigned, allowing for easy on and off Transportation:With an OPERATING WEIGHT between8,710 lb3950 kg to 9,220 lb 4180 kg,the D21 can be loaded onto a trailerand easily transported to practically anyjob and Easy Control:The HYDROSHIFT transmission offers greatercontrol and accuracy while maintaining Movement:The joystick and inching pedalcombination provides moreprecise grading Speed Change:The HYDROSHIFT transmission allowsfor easy speed changes with a simpletwist of the control Control:The 6-way power angle-tilt blade movement iscontrolled by a single-joystick.

2 Pushing a buttonon the hydraulic control lever switches tilt to anglecontrol. Pressure Proportional Control (PPC)Joystick provides reduced OPERATING Lubricated Idlers and Track Rollers:The D21 undercarriage features longer life andreduced maintenance costs with sealed track linksand lifetime lubricated idlers and track eliminate any periodic greasing for simplifiedmaintenance and minimizes internal pin andbushing wear for longer service Track with Steel or Rubber Chain:The long track and the machines well-positioned center of gravity give goodbalance for easy grading and slopeoperations. In addition, rubber or steel trackchain allows the machine to easily travel oversoft ground and muddy Maintenance:Easy to use spin-on type filters are utilizedthroughout the machine allowing for quickreplacement.

3 The air cleaner has anautomatic evacuator which extends thecleaning kW 40 HP @ 2450 rpmOPERATING WEIGHT3950 kg - 4180 kg8710 lb - 9220 lbD21 COMPACT DOZER*ROPS cab and ROPS canopy meet ISO 3471, SAE J1040(APR88) ROPS standards. Engine pre heat indicator light Engine water temperaturegauge Fuel gauge Hitch type drawbar Horn Hour meter Hydraulic track adjusters Inching, pedal Joystick blade control Lights, front (2) rear (1) Locks, vandalismprotection Parking brake PAT blade Safety lock, blade control Safety lock, travel control Single grouser shoes(D21A 7) " 300 mm Single grouser (D21P 7) " 510 mm Single lever steering Suspension seat *ROPS Canopy Track roller guards, end section 3" wide seat belt Air cleaner, dry type with automaticevacuator and restriction indicator light Alternator, 12V, 40 A Alternator indicator light Back up alarm Battery, 12V, 80 Ah Blower fan, engine Crankcase guard Engine oil pressure indicator lightAttachments and Optional Equipment Decelerator Pedal Heater and Defroster Radiator guard door, perforated *ROPS cab Rubber track 12"300 mm (D21A 7) "500 mm (D21P 7) Swing drawbar Track roller guards, full length "340 mm single grousershoes (D21A 7) D21 COMPACT DOZERSPECIFICATIONSSPECIFICATIONSENGINE - EPA CERTIFIEDM odel.

4 Komatsu 4D94 EFlywheel HORSEPOWER ..40 @2,450 rpmMax torque ..112 ft. Nm@1,300 rpmNo. of cylinders ..4 Bore/Stroke .. " "94/100 mmDisplacement ..169 cu. injection ..DirectCooling system ..Dual circuit, thermostatically controlledliquid coolingElectrical system ..12 voltBattery ..1 x 12 volt, 80 AhAlternator ..40 AAir filter ..dry air filter with pre filter and safety cartridgeTRANSMISSIONThe D21 is equipped with Komatsu s unique HYDROSHIFT transmission which simplifies operator control for more accurateblade/machine placement. This powershift transmission offerssmooth, easy maneuvering with greater tractive effort. TheKomatsu HYDROSHIFT transmission with planetary gears ishydraulically controlled and force lubricated, providing simplifieddirection and speed changes.

5 GearsForward/Reverse ..2/2 SpeedsForward 1st gear km/h2nd gear km/hReverse 1st gear km/h2nd gear km/hMax. drawbar pull ..9,970 lb 4520 kg (D21A 7)9,880 lb 4480 kg (D21P 7)STEERING SYSTEMS ingle steering lever controls all direction movement. Wet,multiple disc steering clutches are Proportional PressureControlled (PPC) and interconnected with dry, contracting bandsteering brakes to allow easy, light touch steering/braking PPC valve built into the steering circuit facilitates smooth,shockless steering control. Inching pedal assures smooth, easystarting and stopping, precise inching approaches to obstaclesand impact and lubricated track chain provides for excellent servicelife.

6 Track tension is easily adjusted with a grease ..Rigid typeTrack roller frame ..Box section, high tensile strengthsteel constructionRollers and idlers ..Lifetime lubricated idlers, trackand carrier rollers are sealedNumber of track rollers ..5 eachNumber of carrier rollers ..1 eachTrack shoes ..Single grouserGround pressureD21A 7 .. kg/cm2D21P 7 .. psi .24 kg/cm2 Track shoe, width D21A 7 .. "300mmD21P 7 .. "500mmOPERATING WEIGHT (APPROXIMATE): OPERATING WEIGHT includes; power angle tilt dozer, rated capacity oflubricant, coolant, full fuel tank, standard equipment and 7 ..8,710 lb 3950 kgD21P 7 ..9,220 lb 4180 kgHYDRAULIC SYSTEMS ystem ..Gear-type hydraulic pump mountedon rear of engineHydraulic pressure ..2,200 psi155 barHydraulic pump flow.

7 Gpm59 l/mControl valve: ..Power angle tilt dozerPositions: Blade lift ..raise, hold, lower and floatBlade angle ..left, hold and rightBlade tilt ..left, hold and rightHydraulic cylinders: ..Double acting, piston typeBlade angling and tilting hydraulic hoses are protected fromdamage with steel REFILL CAPACITIESFuel tank .. US system .. US oil .. US system .. US drive (each) .. US Equipment*Additionto 7D21P 7 Type of "500 mmrubber "300 mmrubber track2,630 cm21,560 cm2+243 lb+110 kg+88 lb+40 kgGroundcontact areaGroundpressure (tractor)* "39 mm "39 mm kg/cm2 Dimensions D21A-7 and D21P-7*ft' in'' (mm) (equipped with power-angle-tilt dozer blade)Optional Track Shoes*D21P-7 MeasurementsD21 COMPACT DOZERThis specification sheet may contain attachments and optional equipment that are not available in your area.

8 Please contact your local KomatsuUtility distributor for those items you may require. Materials and specifications are subject to change without No. KUSS112-04 2002 Komatsu Printed in USA PLI ( ) PLPrinted in USA 0502 Komatsu Utility DivisionKomatsu America Box 8112 Vernon Hills, IL 60061-8112 website.