Komatsu WA65-3(30km/h Option S/N HA940549-HA940771 & H20772-UP)
Maintenance schedule, common problems & OEM parts breakdown
The Komatsu WA65-3 is a compact utility wheel loader, sub-5-tonne class, built for yard, landscaping, agricultural, and light construction loading work. This -3 series (built roughly 1998 to 2004) runs the Komatsu 4D94E, a mechanically governed 4-cylinder direct-injection diesel built on a Yanmar 4TNE94 block, rated 37 kW (50 PS / 50 hp) net at 2,500 rpm, with no engine ECM. Operating weight runs about 4,260 kg (9,392 lb) with the standard 0.7 cubic meter bucket, up to about 4,665 kg (10,285 lb) with the high-dump bucket fitted. Drive is Komatsu's closed-circuit hydrostatic transmission with 2 forward/2 reverse ranges, sharing one hydraulic tank with steering and loader-arm hydraulics. This specific serial bracket (HA940549-HA940771 & H20772-UP) is the factory 30 km/h travel-speed option, a running-gear/gearing variant built alongside a standard-speed (about 20 km/h) sibling in the same production window; a parallel-linkage version (WA65PT-3) was also offered on the same base chassis, plus general-purpose, light-material, 4-in-1, high-dump, side-dump, and skeleton bucket choices. Komatsu's WA65 nameplate began with a short original run before this -3 series, and the -3 generation was later succeeded by the WA65-5, a cab-standard model in a heavier weight class.
Within the -3 generation, the 30 km/h option changes only the HST gearing/travel-speed circuit; published operating weight, engine, and working dimensions carry over unchanged from the standard-speed machine built in the same serial window. The parts book still treats the two speed variants as separate entries, so axle, final-drive, and HST pump/motor parts should be confirmed against this exact serial bracket rather than assumed interchangeable with the standard-speed sibling. This -3 series was built in Germany at the former Hanomag plant in Hanover rather than in Japan, so service history and some spare-parts routing for older units trace through that European Hanomag-descended network; even the ignition key differs from later Komatsu-built machines. The WA65-5 successor moved to a cab-standard layout and a larger engine and weight class, dropping the earlier open-station and 30 km/h-option arrangement. In the used and parts market, this size and era of loader holds steady demand from landscaping, agriculture, and municipal fleets wanting a small hydrostatic-drive loader with smooth single-lever control and, on this configuration, the added road-speed transport option; the mechanically governed engine and simple drivetrain, with no ECM to fail, keep well-kept examples economical to run long after the original dealer network moved on to newer generations.
Below: full specifications, fluids & capacities, the factory service schedule, common service parts, verified fault codes, what owners discuss, attachment guidance, the complete assembly directory, and a serial-number reference. Complete parts lists with full OEM part numbers, exploded diagrams, quantities, and fitment data are available free in Heavy Parts AI.
Komatsu WA65-3(30km/h Option S/N HA940549-HA940771 & H20772-UP) specifications
Engine
| Model | Komatsu 4D94E, 4-cylinder diesel, direct injection |
| Net power | 37 kW / 50 PS (50 hp) at 2,500 rpm, per ISO 9249. Gross power figure not separately published for this model. |
| Displacement | 2.775 L (2,775 cc) |
| Bore x stroke | 94 x 100 mm (3.70 x 3.94 in) |
| Max torque | 165 Nm (122 lb-ft) at 1,600 rpm |
| Cooling system | Dual-circuit, liquid coolant, thermostat-controlled |
| Emissions | Meets EU/EC Stage II limits; certified to ISO 6393 exhaust/noise standard. Recognized with a low-noise environmental award for quiet operation (external LwA 96 dB(A), operator LpA 73 dB(A)). |
Weights
| Operating weight, standard bucket (0.7 m³ universal) | 4,260 kg (9,392 lb) |
| Operating weight, lightmaterial bucket (1.0 m³) | 4,355 kg (9,601 lb) |
| Operating weight, 4-in-1 universal bucket (0.55 m³) | 4,460 kg (9,833 lb) |
| Operating weight, high-dump bucket (1.1 m³) | 4,665 kg (10,285 lb) |
| Ground pressure | Not published in available factory literature for this configuration. |
| Note on 30 km/h option | Factory literature lists the 30 km/h top speed as a running-gear/transmission option only; it does not change published operating weights versus the standard-speed machine. |
Dimensions
| Overall length (standard bucket) | 5,115 mm (16.8 ft); ranges up to 5,905 mm (19.4 ft) with the high-dump bucket fitted |
| Overall width (bucket, standard) | 1,850 mm (6.1 ft); up to 2,100 mm (6.9 ft) with the lightmaterial bucket |
| Overall height | 2,590 mm (8.5 ft) |
| Wheelbase | 1,950 mm (6.4 ft) |
| Track width (tread) | 1,450 mm (4.8 ft) |
| Ground clearance | 395 mm (15.6 in); 290 mm (11.4 in) on the parallel-linkage version |
| Minimum turning radius (outer corner of tyre) | 3.7 m (12.1 ft) |
| Frame articulation/steering angle | 40 degrees each side |
| Rear axle oscillation angle | +/- 12 degrees |
| Centre hinge pin height | 3,115 mm (10.2 ft) |
Performance
| Travel speed, 1st gear | 0-5.6 km/h (0-3.5 mph) |
| Travel speed, 2nd gear (standard machine) | 0-20 km/h (0-12.4 mph) |
| Travel speed, this configuration (30 km/h option) | 0-30 km/h (0-18.6 mph), replacing the standard 2nd-range top speed. 2-speed hydrostatic transmission, shiftable in both directions under full power. |
| Max tipping load, straight, standard bucket | 2,730 kg (6,020 lb); 2,700 kg (5,952 lb) on the parallel-linkage version |
| Max tipping load, full articulation, standard bucket | 2,630 kg (5,798 lb); 2,300 kg (5,071 lb) on the parallel-linkage version |
| Max breakout force, standard bucket | 39.8 kN (8,950 lbf); 40.3 kN (9,062 lbf) on the parallel-linkage version |
| Max lifting capacity, standard bucket | 33.3 kN (7,486 lbf); 36.7 kN (8,251 lbf) on the parallel-linkage version |
| Max payload per EN 474-3 | 1,800 kg (3,968 lb) at 80% tipping load; 1,410 kg (3,109 lb), or 1,370 kg (3,020 lb) on the parallel-linkage version, at 60% |
| Hydraulic cycle times | Lift 5.0 s; lower 2.4 s; dump 1.0 s |
| Gradeability | Not published in available factory literature for this configuration. |
Service capacities (summary)
| Fuel tank | 77.0 L (20.3 US gal) |
| Hydraulic system (attachment, steering, motive-power circuits) | 70.0 L (18.5 US gal) |
| Engine oil | 9.4 L (2.5 US gal), Komatsu EO-spec |
| Cooling system | 10.0 L (2.6 US gal) |
| Front axle | 6.1 L (1.6 US gal), Komatsu AXO-spec |
| Rear axle with transmission gears | 6.5 L (1.7 US gal), Komatsu AXO-spec |
Values vary by configuration, region, and serial range — confirm against your machine before planning transport or lifts.
WA65-3(30km/h Option S/N HA940549-HA940771 & H20772-UP) fluids & capacities
| System | Capacity | Recommended fluid |
|---|---|---|
| Engine crankcase (with filter), Komatsu 4D94E 4-cylinder diesel | 9.4 L (2.5 US gal) | Komatsu Genuine diesel engine oil. Single-grade SAE 30 for temperate/warm ambient (roughly 0 to 40 degrees C); SAE 10W-30 for cold-climate starts down to about -20 degrees C; SAE 15W-40 all-season alternative. Match to a CD/CE-class (or later DH-series) Komatsu Genuine oil, changed with every filter service. |
| Cooling system (dual-circuit, liquid-cooled, thermostat-controlled) | 10.0 L (2.6 US gal) | Komatsu Super Coolant (ethylene-glycol permanent-type antifreeze/anti-corrosion coolant), premixed to the local minimum-temperature requirement. Do not run plain water or a non-Komatsu-spec coolant, it drops the corrosion and cavitation protection built into the cooling system. |
| Fuel tank | 77.0 L (20.3 US gal) | Diesel fuel only, ASTM D975 No. 2-D grade (or local equivalent). Switch to a winter-grade or No. 1-D blend in cold weather to prevent wax gelling and filter plugging. |
| Hydraulic system - attachment, steering and motive-power (hydrostatic drive) circuit, closed-center, includes tank | 70.0 L (18.5 US gal) | Komatsu Genuine antiwear hydraulic oil, ISO VG46 grade (HO46-type). This single closed circuit supplies the loader/attachment hydraulics, the hydrostatic steering, and the hydrostatic transmission (motive power) together, there is no separate transmission fluid reservoir on this machine. A Komatsu Genuine bio (synthetic ester) hydraulic oil is offered as a factory option for the same circuit. |
| Front axle (planetary final drive + limited-slip differential, oil-bath wet disc brake) | 6.1 L (1.6 US gal) | Komatsu Genuine axle oil, SAE 80W, GL-4/wet-brake-compatible formulation (AXO-type). Required for axles with built-in oil-bath brakes and limited-slip differential; do not substitute a plain GL-5 gear oil. |
| Rear axle with transmission (final-drive reduction) gears, oil-bath wet disc brake | 6.5 L (1.7 US gal) | Same Komatsu Genuine axle oil, SAE 80W, GL-4/wet-brake-compatible formulation (AXO-type), as the front axle. |
| Grease points - articulation joint, loader linkage/boom pins, quick-coupler pivots, driveline U-joints | Spec only, no reservoir capacity; greased per lubrication-point schedule | Komatsu Genuine multipurpose lithium-base EP grease, NLGI No. 2. Machines with the optional automatic central lubrication system use the same grease grade fed from a central reservoir. |
Capacities are refill values from factory literature — always fill to the dipstick/sight gauge, not the number.
Komatsu WA65-3(30km/h Option S/N HA940549-HA940771 & H20772-UP) maintenance schedule
| Service interval | Tasks |
|---|---|
| Every 50 h |
|
| Every 250 h |
|
| Every 500 h |
|
| Every 1,000 h |
|
| Every 2,000 h |
|
| Every 4,000 h |
|
Servicing the WA65-3(30km/h Option S/N HA940549-HA940771 & H20772-UP) beyond the schedule
Predictive Maintenance & Fluid Analysis
This WA65-3 (30 km/h option) has no engine ECM, so there are no digital fault codes; fluid sampling is the early-warning system here. Pull engine oil and hydraulic oil samples at each 250-hour service; one hydraulic tank feeds the HST charge/drive circuit, steering, and loader hydraulics, so wear shows there first. A falling HST charge pressure precedes weak push or drive-pedal creep by many hours. Watch the analog panel lamps for oil pressure, coolant temperature, and air-cleaner restriction; they are the only onboard warning this platform gives.
Corrective & Common Repairs
Weak push or creep on the HST drive is the top complaint on this loader; check charge-circuit pressure and hydraulic fluid condition before condemning the pump or motor. After any injection-pump work, verify timing marks; this mechanically governed 4D94E has no ECM to catch a mismatch, and it shows up as hard starting or knock. Center-articulation bushings and rear-axle kingpin trunnions loosen from a neglected grease schedule. Given the 30 km/h option, compare tire wear and brake condition to the standard-speed sibling, and confirm driveline parts against this exact serial bracket first.
Overhaul & Rebuild Points
At overhaul hours, rebuild the HST charge pump and axial-piston drive pump/motor once a fluid and filter service no longer restores response. Check center-articulation bushings and rear-axle kingpin trunnions for play; both flex constantly on a loader this size and wear together. Bench-test and recalibrate the mechanical injection pump if smoke or power loss appears, since there is no ECM to trim it electronically. Before ordering any axle, final-drive, or HST pump/motor part, confirm it against this exact 30 km/h-option parts-book entry; it does not interchange with the standard-speed sibling in the same serial window.
Seasonal & Environment Servicing
Match engine oil grade to season per the OMM chart: SAE 30 for warm ambient, 10W-30 for cold starts to about -20 degrees C, 15W-40 as an all-season blend. Switch to winter-grade or No. 1-D diesel to stop fuel wax gelling in cold snaps. Verify Super Coolant concentration before winter; this loader runs a small dual-circuit cooling system with little margin. In dusty yard or landscaping work, shorten the air-cleaner cleaning interval below the standard 250-hour mark. In wet climates, drain the fuel water separator daily rather than at scheduled service, to protect the mechanical injection pump.
WA65-3(30km/h Option S/N HA940549-HA940771 & H20772-UP) common service parts
| Part number | Part | Notes | |
|---|---|---|---|
| 42U-62-12200 | Filter | Scheduled service item | Check fitment → |
| 42U-62-13150 | Filter Element | Scheduled service item | Check fitment → |
Always confirm against your machine's serial number — cross-check any part in Heavy Parts AI before ordering.
WA65-3(30km/h Option S/N HA940549-HA940771 & H20772-UP) fault codes & troubleshooting
| Code | Meaning | Likely cause | What to do |
|---|---|---|---|
| Charge Lamp (battery symbol, red) | Alternator is not charging the battery circuit | Loose or broken fan/alternator belt, faulty alternator, or wiring fault | Stop engine, check belt tension and alternator wiring before restarting |
| Engine Oil Pressure Lamp (oil-can symbol, red) | Engine lubrication pressure has dropped below the safe threshold | Low oil level, clogged oil filter, or failing oil pump | Shut engine down immediately, check oil level and filter before restart |
| Coolant Temperature Lamp (thermometer symbol, red) | Engine coolant temperature has exceeded normal operating range | Low coolant, clogged radiator fins, slipping fan belt, or failed thermostat | Idle down, let engine cool, check coolant level and radiator before continuing work |
| Air Cleaner Clogging Lamp (filter symbol, red/yellow) | Intake air filter restriction has reached the service limit | Dust-loaded air filter element | Stop and inspect or replace the air filter element, check for a plugged pre-cleaner |
| Parking Brake Lamp (P symbol, red) | Parking brake is applied | Lever left engaged, or brake solenoid/switch circuit issue if lamp stays on with lever released | Confirm lever position first; if lamp stays lit with brake released, check the parking brake switch and wiring |
| Brake Oil Pressure Lamp (brake symbol, red) | Hydraulic brake accumulator/circuit pressure is below the safe threshold | Low hydraulic oil level, brake charge pump or accumulator fault, external leak | Stop machine safely using parking brake, check hydraulic oil level and brake circuit before further operation |
Codes and remedies are general guidance for this model family — always confirm with diagnostic tooling and your dealer before major repairs.
WA65-3(30km/h Option S/N HA940549-HA940771 & H20772-UP) attachments & work tools
General-purpose / earth-moving bucket
Standard fitment is a 0.7 m³ (0.92 cu yd) SAE-heaped general-purpose bucket, about 1,850 mm (73 in) wide, rated near 3.5 t (7,700 lb) static tipping load straight-ahead. Sized for general earthmoving, loading, and yard work typical of this utility-class loader.
Light-material and stockpile buckets
A higher-volume light-material bucket runs about 1.0 m³ (1.3 cu yd), widened to roughly 2,100 mm (83 in), for low-density material such as mulch, sand, or grain. A stockpile bucket variant shares the same 1.0 m³ capacity for pile-handling work.
4-in-1 (universal) bucket
Optional 4-in-1 bucket holds about 0.55 m³ (0.72 cu yd) and works as clamshell, dozer blade, grab, and loader bucket in one tool, useful for grading, light dozing, and clamping bulky loads. Capacity runs lower than the standard bucket because of the internal clamshell jaw.
High-dump bucket
High-dump bucket capacity is about 1.1 m³ (1.44 cu yd) with dump height near 3.75 m (12.3 ft) at maximum dump angle, for loading over truck sideboards or into hoppers. Breakout force runs noticeably lower than the standard bucket due to the extended dump geometry.
Side-dump and mulch-grab buckets
Side-dump bucket (about 0.7 m³ / 0.92 cu yd) tips material to one side for tight-clearance work such as trenches or narrow aisles. Mulch grab bucket (also about 0.7 m³ / 0.92 cu yd) adds a hydraulic clamp arm for loose, bulky material like mulch, brush, or silage.
Skeleton (screening) bucket
Skeleton bucket uses an open bar-grate profile to sift soil, rock, or debris while loading, common in landscaping and site cleanup work. Mounts on the same coupler and auxiliary circuit as the solid buckets.
Fork carrier and pallet tines
Fork carrier with pallet tines mounts on the same quick coupler for pallet and unit-load handling; maximum stacking height with tines runs about 2.9 m (9.6 ft) and maximum reach about 1.2 m (4 ft). Fitting the optional bolt-on rear counterweight is recommended when running forks, to keep the machine stable at full reach.
Telescopic crane arm
Telescopic (jib-style) crane arm mounts on the coupler for hook-and-load lifting work, extending reach well beyond the standard boom geometry. Intended for occasional lifting duty rather than continuous crane service.
Sweeper attachment
Hydraulically driven rotary sweeper attaches through the same coupler and runs off the machine's auxiliary hydraulic circuit, used for yard, road, and site cleanup.
Quick-coupler / mounting system
Standard mounting is a hydraulic 4-point quick coupler, allowing tool changes in seconds without leaving the cab. The coupler mount is stated as cross-compatible with other-brand attachments carrying a matching interface, not limited to Komatsu Original Attachments.
Auxiliary (3rd-circuit) hydraulics
A 3rd hydraulic control circuit for attachment functions is standard, needed to run tools with a second hydraulic motion such as a clamp, sweep, or grab beyond simple tilt/lift. An electric-actuation upgrade for this 3rd circuit is offered as a factory option, along with an electronic quick-coupler lock for attachment security.
Counterweight and stability options
Factory options add front-axle ballast weights (two units, about 70 kg / 154 lb each) or a rear bolt-on counterweight (about 100 kg / 220 lb) to offset heavier attachments such as forks or the high-dump bucket. An Automatic Load Stabiliser (boom ride-damping) and an over-centre valve (boom hydraulic lock) are also offered as factory options affecting attachment handling and transport safety.
All WA65-3(30km/h Option S/N HA940549-HA940771 & H20772-UP) assemblies by section
Every catalogued assembly group for the Komatsu WA65-3(30km/h Option S/N HA940549-HA940771 & H20772-UP). Open an assembly to preview the parts inside — full OEM part numbers are available in Heavy Parts AI.
03 Electric System
Komatsu : Wa65-3(30km/H Option S/N Ha940549-Ha940771 & H20772-Up) : 03 Electric System : 62 Electric System, Relay
| 01***10 | Screw,(For Lighter) | 4 |
| 01***10 | Screw,(For Wiper Switch Earth) | 2 |
| 01***12 | Screw,(With Articulate Indicator) | 3 |
Komatsu : Wa65-3(30km/H Option S/N Ha940549-Ha940771 & H20772-Up) : 03 Electric System : 63 Instrument Box And Instruments
| 42***01 | Key Kit | 1 |
| 42***10 | Starter Switch | 1 |
| 42***30 | Symbol | 1 |
Komatsu : Wa65-3(30km/H Option S/N Ha940549-Ha940771 & H20772-Up) : 03 Electric System : 80 Licence Plate Light
| 01***10 | Screw,(For Lighter) | 4 |
| 01***16 | Screw, Mount Parking Lights | 2 |
| 42***00 | Licence Plate Light | 2 |
04 Transmission, Universal Joint
Komatsu : Wa65-3(30km/H Option S/N Ha940549-Ha940771 & H20772-Up) : 04 Transmission, Universal Joint : 61 Axial Piston Pump
| 42***20 | Screw | 4 |
| 42***01 | Axial Piston Pump | 1 |
| 42***00 | Pump | 1 |
Komatsu : Wa65-3(30km/H Option S/N Ha940549-Ha940771 & H20772-Up) : 04 Transmission, Universal Joint : 75 Universal Joint
| 42***10 | Universal Joint | 1 |
| 42***01 | Lubrication Nipple | 2 |
| 42***30 | Nut | 12 |
Komatsu : Wa65-3(30km/H Option S/N Ha940549-Ha940771 & H20772-Up) : 04 Transmission, Universal Joint : 93 Gear Box Controls
| 01***45 | Screw | 4 |
| 01***25 | Screw | 2 |
| 01***20 | Bolt - Mount Risers To Cab Floor | 2 |
Komatsu : Wa65-3(30km/H Option S/N Ha940549-Ha940771 & H20772-Up) : 04 Transmission, Universal Joint : 97 Hydraulic Pump Drive
| 01***20 | Screw | 1 |
| 01***12 | Bolt - M8 - 1.25 X 12 | 1 |
| 01***10 | Screw | 2 |
Komatsu : Wa65-3(30km/H Option S/N Ha940549-Ha940771 & H20772-Up) : 04 Transmission, Universal Joint : 98 Axial Piston Engine
| 42***62 | Grub Screw | 2 |
| 42***01 | Axial Piston Engine | 1 |
| 42***58 | Plug | 2 |
05 Rear Axle
Komatsu : Wa65-3(30km/H Option S/N Ha940549-Ha940771 & H20772-Up) : 05 Rear Axle : 43 Rear Axle
| 01***16 | Nut - M20 | 8 |
| 42***00 | Rear Axle | 1 |
| 42***30 | Disc | 8 |
12 Tools, Accessory, Lettering
Komatsu : Wa65-3(30km/H Option S/N Ha940549-Ha940771 & H20772-Up) : 12 Tools, Accessory, Lettering : 03 Lettering
| 09***81 | Plate? Caution,Don'T Jump Start | 1 |
| 42***80 | Note Plate | 1 |
| 42***80 | Note Plate | 1 |
15 Equipment
Komatsu : Wa65-3(30km/H Option S/N Ha940549-Ha940771 & H20772-Up) : 15 Equipment : 62 A.L.S. Equipment
| 01***16 | Bolt - Seat And Tether Belt Mounting | 3 |
| 01***50 | Screw | 2 |
| 01***20 | Bolt, Hose Clamps (Inlet And Return Line Hoses) | 4 |
WA65-3(30km/h Option S/N HA940549-HA940771 & H20772-UP) serial number reference
The PIN/serial plate on Komatsu WA-series wheel loaders, including the WA65-3, is mounted on the frame's right-hand (curb) side, typically behind the front fender or under the edge of the operator's cab. Komatsu also stamps the number directly into the frame steel near the plate as a backup if the plate is lost or painted over. This model's production run carries two serial threads: an older-style chassis serial (letter+digits, e.g. HA940xxx) used through part of the run, then a newer numeric-prefix continuation PIN (H2 + digits) picked up later in the run. The 30km/h travel-speed option is a factory build/option code, not a guaranteed distinct serial sub-range - Komatsu's own catalog groups both the option and non-option machines under overlapping serial windows, so read the full PIN plate and verify the actual option fitted with a Komatsu dealer rather than assuming configuration from the serial number alone.
| Prefix | Identifies | Notes |
|---|---|---|
| HA940549-HA940771 | WA65-3, 30km/h travel-speed option | Chassis-serial band inside the wider WA65-3 production run. Komatsu's own parts catalog groups this exact HA-chassis window under a separate '30km/h option' book code, distinct from an otherwise-identical plain listing covering the same HA numbers, confirming the 30km/h top speed is a genuine factory option on this model rather than a naming quirk. The option is carried on the build/option code, not a different letter prefix. Engine is the Komatsu 4D94E naturally aspirated diesel (Yanmar-derived 4TNE94 block); no source indicates a different engine for the option build. Falls inside the WA65-3's overall production span (roughly 1998-2004); no published date breakdown exists for this narrower band. Confirm the actual build/option code with a Komatsu dealer before ordering parts strictly against this band. |
| H20772-UP | WA65-3, 30km/h travel-speed option (post-changeover PIN) | Continuation number picked up after this line moved off the older letter+digit chassis serial onto a newer numeric-prefix PIN; follows on from the HA940549-HA940771 band for the same 30km/h-option build. Komatsu's parts catalog also carries a plain, non-option-labeled listing for this same numeric window, so the standard-speed and 30km/h-option machines are not reliably separated by serial number alone in the sources checked. Read the full PIN and the machine's build/option code, and confirm with a Komatsu dealer, rather than assuming the option from the prefix. |
Frequently asked questions
What engine powers this Komatsu WA65-3 (30 km/h option)?
The Komatsu 4D94E, a 4-cylinder direct-injection diesel built on a Yanmar 4TNE94 block. It is mechanically governed with no engine ECM, rated 37 kW (50 PS / 50 hp) net at 2,500 rpm from 2.775 L displacement. This is the same engine as the standard-speed WA65-3 built in the same serial window; the 30 km/h option changes only the HST travel-speed gearing, not the engine.
What is the operating weight of this WA65-3 configuration?
About 4,260 kg (9,392 lb) with the standard 0.7 cubic meter bucket. Operating weight runs higher with other factory buckets fitted, up to roughly 4,665 kg (10,285 lb) with the high-dump bucket. The 30 km/h option does not change the published operating weight versus the standard-speed sibling in the same serial range.
What replaced this WA65-3?
Komatsu's WA65-5 followed this -3 series. It moved to a cab-standard configuration and stepped up into a heavier weight class, around 4.7 t, with a larger engine (a roughly 40 kW / 54 hp class unit) than this -3 series' 4D94E. No 30 km/h-option variant is documented under the WA65-5 nameplate; confirm exact configuration with your dealer.
What WA65-3(30km/h Option S/N HA940549-HA940771 & H20772-UP) owners discuss
How does this loader's hydrostatic drive change the way it handles compared to a torque-converter machine?
What engine is under the hood, and what should a mechanic know going in?
People mention hydrostatic 'creep' or weak push on loaders like this. What's usually behind it?
Are there undercarriage or structural wear points typical for a loader this size?
What's different about buying a used one of these versus a Japan-built Komatsu loader?
What should I check specifically because this unit carries the 30 km/h option?
What about brakes and cylinder condition on an older example of this loader?
Compiled from owner and technician discussions across the industry — experiences vary by serial range and machine history.
Serial-range & configuration variants
This page covers the Komatsu WA65-3(30km/h Option S/N HA940549-HA940771 & H20772-UP). Related factory variants of the same model family:
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