Komatsuengine(no series)
Komatsu SAA6D140E-3N-8(S/N 110001-UP)
Maintenance schedule, common problems & OEM parts breakdown
The Komatsu SAA6D140E-3N-8 is a 6-cylinder, turbocharged, aftercooled diesel engine designed for heavy-duty construction applications. It powers the D155AX-5 bulldozer, PC600-6/7 and PC750-6/7 excavators, WA500-3 wheel loaders, HD325-6 dump trucks, and HM350-1/HM400-1 articulated dump trucks. Operating weights for these machines range from approximately 34,000 lb to over 87,000 lb. Production for the SAA6D140E-3 series spanned the late 1990s through the mid-2000s, serving as the predecessor to the SAA6D140E-5 and SAA6D140E-6 generations. Configurations included standard, cold-terrain (-40°C), and generator set variants.
Across the SAA6D140E series, Komatsu transitioned from mechanically governed engines to electronically controlled systems, improving fuel efficiency and emissions compliance. The SAA6D140E-3N-8 remains significant in the used and parts market due to its robust design and widespread use in high-hour machines like the D275A-5 and PC800-6. As factory support shifts to newer generations, demand for rebuilt injection pumps, turbochargers, and core components for this engine has increased, making it a critical reference for fleet maintenance and remanufacturing.
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 SAA6D140E-3N-8(S/N 110001-UP) specifications
Engine
| Model | SAA6D140E-3N-8 |
| Series/Generation | SAA6D140E series |
| Cylinders | 6 |
| Displacement | 14.0 L (854 cu in) |
| Type | Turbocharged, aftercooled diesel |
| Emissions Tier | Not documented for this exact serial range — verify with your dealer |
| Gross/Net Power | Not documented for this exact serial range — verify with your dealer |
Weights
| Operating Weight | Not documented for this exact serial range — verify with your dealer |
| Shipping Weight | Not documented for this exact serial range — verify with your dealer |
| Ground Pressure | Not documented for this exact serial range — verify with your dealer |
Dimensions
| Transport Length | Not documented for this exact serial range — verify with your dealer |
| Transport Width | Not documented for this exact serial range — verify with your dealer |
| Transport Height | Not documented for this exact serial range — verify with your dealer |
| Track Gauge | Not documented for this exact serial range — verify with your dealer |
| Ground Clearance | Not documented for this exact serial range — verify with your dealer |
Performance
| Travel Speed | Not documented for this exact serial range — verify with your dealer |
| Gradeability | Not documented for this exact serial range — verify with your dealer |
Service capacities (summary)
| Fuel Tank | Not documented for this exact serial range — verify with your dealer |
| Hydraulic System | Not documented for this exact serial range — verify with your dealer |
| Engine Oil | Not documented for this exact serial range — verify with your dealer |
| Cooling System | Not documented for this exact serial range — verify with your dealer |
Values vary by configuration, region, and serial range — confirm against your machine before planning transport or lifts.
Komatsu SAA6D140E-3N-8(S/N 110001-UP) maintenance schedule
| Service interval | Tasks |
|---|---|
| Every 10 h |
|
| Every 250 h |
|
| Every 500 h |
|
| Every 1,000 h |
|
| Every 2,000 h |
|
Servicing the SAA6D140E-3N-8(S/N 110001-UP) beyond the schedule
Predictive Maintenance & Fluid Analysis
Utilize KOWA fluid analysis at every 500-hour interval to monitor engine wear metals (iron, copper, lead, aluminum) and contaminants (silicon, sodium). Track hydraulic oil particle count and viscosity changes to predict pump and valve wear. Monitor coolant pH, SCA concentration, and glycol content to prevent corrosion and overheating. KOMTRAX telematics integration provides remote monitoring of load frequency and fault codes, enabling proactive service scheduling before component failure occurs.
Corrective & Common Repairs
Address intermittent starting and random shutdowns by inspecting the engine controller power supply and sensor circuits. Replace faulty coolant temperature sensors to resolve E-14 fault codes and prevent overheating damage. Repair fuel delivery issues by checking the low-side pressure of the fuel pump under load and ensuring the woodruff key is secure on the cam gear. Inspect wiring harnesses for damage, particularly in cold-terrain specifications, to maintain reliable injector operation.
Overhaul & Rebuild Points
Plan engine overhauls based on KOWA results and performance metrics. Key components to inspect include the cylinder head, valve springs, and cylinder liners. Replace the turbocharger (Komatsu KTR110L) if boost pressure drops or exhaust smoke increases. Monitor piston displacement and bore wear to determine if a complete engine exchange is more cost-effective. Remanufactured engine exchanges are available with warranty coverage for extended service life.
Seasonal & Environment Servicing
For cold-terrain specifications (-40°C), verify fuel injector wiring and cold-start systems are intact. Use Komatsu Genuine Lubricants with appropriate viscosity for extreme temperatures. In dusty environments, clean the air filter outer element more frequently and inspect the radiator and oil cooler fins for debris buildup. Ensure the DEF level is adequate for Tier 4 compliance. Regularly check the KDPF for soot accumulation and perform regeneration cycles as needed to maintain exhaust flow.
SAA6D140E-3N-8(S/N 110001-UP) common service parts
| Part number | Part | Notes | |
|---|---|---|---|
| 6217-71-6211 | Head, Fuel Filter | Fuel system service | Check fitment → |
| ND092220-0040 | Filter,Fuel | Fuel system service | Check fitment → |
| 07281-00197 | Clamp,(With Pre-Fuel Filter) | Fuel system service | Check fitment → |
| 600-185-6100 | Element Assembly, Air Cleaner | Air intake service | Check fitment → |
| 600-211-1340 | Cartridge, Oil Filter | Lubrication service | Check fitment → |
Always confirm against your machine's serial number — cross-check any part in Heavy Parts AI before ordering.
SAA6D140E-3N-8(S/N 110001-UP) fault codes & troubleshooting
| Code | Meaning | Likely cause | What to do |
|---|---|---|---|
| CA115 | Engine crankshaft speed sensor and backup speed sensor failure | Faulty speed sensor, broken wiring harness, or corroded connector at the pin connector | Replace the speed sensor and verify voltage at the pin connector |
| CA111 | Internal engine controller fault | Malfunction within the Electronic Control Module (ECM) | Replace or reprogram the ECM |
| CA451 | Common rail pressure sensor feedback value too high | Malfunction in the rail pressure sensor or actual overpressure condition | Diagnose the fuel rail pressure sensor or check pump lines |
| CA441 | Battery voltage too low | Weak battery, failing alternator, or loose connections | Replace the alternator or battery; check the voltage regulator |
| CA122 | Intake air pressure sensor feedback voltage too high | Faulty intake pressure sensor or wiring issue | Verify the intake pressure sensor and wiring |
| CA123 | Intake air pressure sensor feedback voltage too low | Sensor short or airflow restriction | Check for a sensor short or an airflow restriction |
| CA234 | Engine overspeed | Throttle calibration error, engine load cycle issue, or operator misuse | Verify throttle calibration and engine load cycle |
| CA553 | Common rail pressure too high | Fuel pump regulator (IMV/PCV) malfunction | Evaluate fuel pump regulator |
| CA559 | Common rail pressure too low | Fuel pump regulator (IMV/PCV) malfunction or supply issue | Evaluate fuel pump regulator |
| CA2311 | IMV solenoid valve failure | Failed IMV solenoid or wire harness issue | Replace the IMV solenoid or inspect the wire harness |
Codes and remedies are general guidance for this model family — always confirm with diagnostic tooling and your dealer before major repairs.
SAA6D140E-3N-8(S/N 110001-UP) attachments & work tools
Excavator Work Tools
The SAA6D140E-3N-8 engine powers the PC600-6 and PC800-6/7 excavator series, which utilize standard Komatsu quick coupler systems for bucket and attachment interchange. Typical bucket capacities for this class range from 2.8 to 6.1 m³ (3.7 to 8.0 cu yd) depending on the specific PC600 or PC800 model variant and material density. Factory guarding options include high-wear plate packages for stick and boom interiors, and heavy-duty bucket teeth systems designed for abrasive rock excavation.
Dozer Blade & Ripper Configurations
For the D155AX-5 bulldozer (serials 110001–the OEM part reference), the engine supports semi-universal (SU) and straight (BL) blade configurations with hydraulic tilt and angle adjustments. Ripper options include single-shank or multi-shank rock rippers mounted to the rear frame, requiring specific hydraulic line routing from the main pump. Blade guard packages and side-cutting edges are standard factory offerings to extend wear life in high-abrasion environments.
Wheel Loader Buckets
The WA500-3 wheel loader equipped with this engine uses standard quick-attach bucket systems compatible with Komatsu’s SAE J780 mounting patterns. Bucket capacities typically range from 4.0 to 6.0 m³ (5.2 to 7.8 cu yd) for general material handling, with heavy-duty rock buckets available for quarry applications. Hydraulic kit arrangements include auxiliary lines for tilt-rotator attachments, requiring specific valve spool configurations in the main control valve.
Articulated Dump Truck Bodies
The HM350-1 and HM400-1 articulated dump trucks utilize a rear-dump body with a capacity of approximately 25 to 30 m³ (33 to 39 cu yd) depending on the specific model year and bed height. The body is mounted on a reinforced chassis with hydraulic lift cylinders and tilt mechanisms for unloading. Factory options include high-strength steel body liners and side-skirt extensions for fine material retention.
All SAA6D140E-3N-8(S/N 110001-UP) assemblies by section
Every catalogued assembly group for the Komatsu SAA6D140E-3N-8(S/N 110001-UP). Open an assembly to preview the parts inside — full OEM part numbers are available in Heavy Parts AI.
Engine
Komatsu : Saa6d140e-3n-8(S/N 110001-Up) : Engine : After Cooler (Chassis Mount)(#110003-)
| 62***00 | After Cooler Ass'Y | 1 |
Komatsu : Saa6d140e-3n-8(S/N 110001-Up) : Engine : Air Cleaner (Inner Parts)(#110003-)
| 60***10 | Cover Assembly | 1 |
| 60***20 | Cover Ass'Y | 1 |
| 60***71 | O-Ring | 1 |
Komatsu : Saa6d140e-3n-8(S/N 110001-Up) : Engine : Air Cleaner(#110003-)
| 01***16 | Bolt - Starting Motor Ground Cable | 2 |
| 01***20 | Bolt, Hose Clamps (Inlet And Return Line Hoses) | 1 |
| 01***25 | Bolt, Mount Engine Oil Drain To Fuel Tank | 3 |
Komatsu : Saa6d140e-3n-8(S/N 110001-Up) : Engine : Air Intake Manifold(#110003-)
| 01***12 | Bolt,(See Fig. K0210-16a0) | 2 |
| 01***25 | Bolt, Mount Engine Oil Drain To Fuel Tank | 15 |
| 01***35 | Bolt, Mount Bracket To Floor | 2 |
Komatsu : Saa6d140e-3n-8(S/N 110001-Up) : Engine : Air Vent And Water Temperature Sensor (Cold Terrain Spec.)(#111016-)
| 01***16 | Bolt - Starting Motor Ground Cable | 1 |
| 01***65 | Screw | 5 |
| 01***10 | Bolt | 1 |
Komatsu : Saa6d140e-3n-8(S/N 110001-Up) : Engine : Air Vent And Water Temperature Sensor(#110003-)
| 01***16 | Bolt - Starting Motor Ground Cable | 1 |
| 01***20 | Bolt, Hose Clamps (Inlet And Return Line Hoses) | 2 |
| 01***40 | Bolt,(Shim 3-Piece) | 1 |
Komatsu : Saa6d140e-3n-8(S/N 110001-Up) : Engine : Alternator (50a) (Inner Parts)(#110003-)
| 60***10 | Alternator A. (60a) | 1 |
| KD***70 | Bushing,Insulate | 1 |
| KD***40 | Bushing,Insulate | 1 |
Komatsu : Saa6d140e-3n-8(S/N 110001-Up) : Engine : Alternator (60a) (Sandy Amd Dusty Spec.) (Inner Parts)(#110003-)
| 60***70 | Alternator A. (60a),(See Fig.A6010-B4k6) | 1 |
| KD***70 | Bushing,Insulate | 2 |
| KD***40 | Bushing,Insulate | 1 |
Komatsu : Saa6d140e-3n-8(S/N 110001-Up) : Engine : Alternator (90a) (Inner Parts)(#110003-)
| 60***10 | Alternator A. (90a) | 1 |
| KD***02 | Bolt | 4 |
| KD***02 | Washer,Spring | 5 |
Komatsu : Saa6d140e-3n-8(S/N 110001-Up) : Engine : Alternator (90a) (Sandy And Dusty Spec.) (Inner Parts)(#110003-)
| 60***10 | Alternator A. (90a),100a | 1 |
| KD***02 | Bolt | 4 |
| KD***02 | Washer,Spring | 5 |
Komatsu : Saa6d140e-3n-8(S/N 110001-Up) : Engine : Alternator Mounting (50a)(#110003-)
| 01***20 | Bolt, Wiring Harness Mounting Bracket | 3 |
| 01***60 | Bolt,For Weight Adjusting Bolt | 1 |
| 01***20 | Screw | 2 |
Komatsu : Saa6d140e-3n-8(S/N 110001-Up) : Engine : Alternator Mounting (60a) (Sandy And Dusty Spec.)(#110003-)
| 01***20 | Bolt, Wiring Harness Mounting Bracket | 3 |
| 01***25 | Bolt,(For Canvas Canopy?Head Guard) | 2 |
| 01***60 | Bolt,For Weight Adjusting Bolt | 1 |
Komatsu : Saa6d140e-3n-8(S/N 110001-Up) : Engine : Alternator Mounting (75a) (Sandy And Dusty Spec.)(#110003-)
| 01***50 | Capscrew | 3 |
| 01***90 | Bolt,For Weight Adjusting Bolt | 1 |
| 01***60 | Screw | 1 |
Komatsu : Saa6d140e-3n-8(S/N 110001-Up) : Engine : Alternator Mounting (75a)(#110003-)
| 01***50 | Capscrew | 3 |
| 01***90 | Bolt,For Weight Adjusting Bolt | 1 |
| 01***60 | Screw | 1 |
Komatsu : Saa6d140e-3n-8(S/N 110001-Up) : Engine : Camfollower
| 04***12 | Ring, Retaining | 4 |
| 61***30 | Pin,Dowel | 12 |
| 61***20 | Ball | 1 |
Komatsu : Saa6d140e-3n-8(S/N 110001-Up) : Engine : Camfollower Cover
| 61***91 | Packing,(See Fig.A2060) | 9 |
| 62***10 | Cover, Camfollower | 3 |
| 62***71 | Screw | 9 |
Komatsu : Saa6d140e-3n-8(S/N 110001-Up) : Engine : Camshaft
| 01***20 | Bolt (M12-1.75x20) | 2 |
| 04***25 | Key, Plain Woodruff | 1 |
| 62***12 | Camshaft Assembly | 1 |
Komatsu : Saa6d140e-3n-8(S/N 110001-Up) : Engine : Common Rail (Low-Viscosity Fuel Spec.) (Regulation Of Epa And Eu 2nd) (Inner Parts)(#111971-)
| 62***11 | Rail Ass'Y,(See Fig.A4010-E3u9) | 1 |
| ND***20 | Picco Ring | 7 |
| ND***40 | Limiter Assembly, Fuel Pressure | 1 |
Komatsu : Saa6d140e-3n-8(S/N 110001-Up) : Engine : Common Rail (Regulation Of Epa And Eu 2nd) (Inner Parts)(#111971-)
| 62***11 | Rail Ass'Y,(See Fig.A4010-E3u9) | 1 |
| ND***20 | Picco Ring | 7 |
| ND***40 | Limiter Assembly, Fuel Pressure | 1 |
Komatsu : Saa6d140e-3n-8(S/N 110001-Up) : Engine : Cooling Fan (Suction)(#110003-)
| 60***81 | Fan,Suction | 1 |
Komatsu : Saa6d140e-3n-8(S/N 110001-Up) : Engine : Corrosion Resistor(#110003-)
| 01***20 | Bolt, Hose Clamps (Inlet And Return Line Hoses) | 2 |
| 01***25 | Bolt, Mount Engine Oil Drain To Fuel Tank | 1 |
| 01***35 | Bolt, Mount Bracket To Floor | 2 |
Komatsu : Saa6d140e-3n-8(S/N 110001-Up) : Engine : Crank Pulley (Hardening Pulley)(#110461-)
| 04***24 | Pin,Dowel (For No.3 Housing) | 1 |
| 62***20 | Bolt | 6 |
| 62***40 | Pulley? Hardening | 1 |
Komatsu : Saa6d140e-3n-8(S/N 110001-Up) : Engine : Crank Pulley (Sandy And Dusty Spec.)(#110003-)
| 04***24 | Pin,Dowel (For No.3 Housing) | 1 |
| 62***20 | Bolt | 6 |
| 62***60 | Pulley? Hardening | 1 |
Komatsu : Saa6d140e-3n-8(S/N 110001-Up) : Engine : Crank Pulley(#110003-)
| 04***24 | Pin,Dowel (For No.3 Housing) | 1 |
| 62***20 | Bolt | 6 |
| 62***50 | Pulley,Non Hardening | 1 |
Komatsu : Saa6d140e-3n-8(S/N 110001-Up) : Engine : Crank Pulley(#110461-)
| 04***24 | Pin,Dowel (For No.3 Housing) | 1 |
| 62***20 | Bolt | 6 |
| 62***50 | Pulley,Non Hardening | 1 |
Komatsu : Saa6d140e-3n-8(S/N 110001-Up) : Engine : Crankshaft
| 04***28 | Pin, Dowel - Transmission Case, Pin-Dowel | 1 |
| 61***30 | Key Parallel | 1 |
| 62***00 | Bearing Assembly | 1 |
Komatsu : Saa6d140e-3n-8(S/N 110001-Up) : Engine : Cylinder Block
| 01***25 | Screw | 12 |
| 01***45 | Washer,(Without R.O.P.S.) | 14 |
| 01***32 | Washer, (Without Emergency Steering) | 12 |
Komatsu : Saa6d140e-3n-8(S/N 110001-Up) : Engine : Cylinder Block Cover And Oil Filler (Cold Terrain Spec.)(#111116-)
| 01***50 | Bolt,(Spark Arrester Spec.) | 12 |
| 01***20 | Bolt, Hose Clamps (Inlet And Return Line Hoses) | 7 |
| 01***25 | Bolt, Mount Engine Oil Drain To Fuel Tank | 4 |
Komatsu : Saa6d140e-3n-8(S/N 110001-Up) : Engine : Cylinder Block Cover And Oil Filler(#110003-)
| 01***50 | Bolt,(Spark Arrester Spec.) | 12 |
| 01***20 | Bolt, Hose Clamps (Inlet And Return Line Hoses) | 7 |
| 01***25 | Bolt, Mount Engine Oil Drain To Fuel Tank | 2 |
Komatsu : Saa6d140e-3n-8(S/N 110001-Up) : Engine : Cylinder Block Gasket Kit(#110003-)
| 07***60 | O-Ring,(For Pc750?800?1800) (A2610) | 1 |
| 07***50 | O-Ring,Front Cover Plate | 1 |
| 07***42 | O-Ring,(See Fig.A3310) | 1 |
Komatsu : Saa6d140e-3n-8(S/N 110001-Up) : Engine : Cylinder Head Gasket Kit(#110003-)
| 02***75 | O-Ring,(See Fig.A1310) | 2 |
| 07***25 | O-Ring,(For Pc1800e-6)(See Fig.A3110) | 6 |
| 07***11 | O-Ring,(See Fig.A4210) | 6 |
Komatsu : Saa6d140e-3n-8(S/N 110001-Up) : Engine : Cylinder Head(#110150-)
| 01***20 | Bolt (M10-1.75x120) | 6 |
| 01***45 | Washer, Spring | 36 |
| 07***25 | O-Ring,(For Pc1800e-6)(See Fig.A3110) | 1 |
Komatsu : Saa6d140e-3n-8(S/N 110001-Up) : Engine : Engine Support(#110003-)
| 01***40 | Bolt,For Weight Adjusting Bolt | 9 |
| 01***32 | Washer,(Not Used With Emergency Str.) | 9 |
| 04***34 | Pin-Dowel, Pin,Dowel (For Shipping) | 2 |
Komatsu : Saa6d140e-3n-8(S/N 110001-Up) : Engine : Exhaust Manifold
| 01***55 | Screw | 2 |
| 01***00 | Screw | 22 |
| 07***08 | Plug,(For W/O. Corrosion Resistor) | 2 |
Komatsu : Saa6d140e-3n-8(S/N 110001-Up) : Engine : Flywheel
| 61***51 | Gear, Ring | 1 |
| 62***50 | Bolt | 6 |
| 62***00 | Flywheel Assembly | 1 |
Komatsu : Saa6d140e-3n-8(S/N 110001-Up) : Engine : Flywheel Housing(#110003-)
| 01***50 | Capscrew | 6 |
| 01***65 | Capscrew | 2 |
| 01***70 | Capscrew | 2 |
Komatsu : Saa6d140e-3n-8(S/N 110001-Up) : Engine : Front Cover (Front Power Take Off Spec.)
| 07***16 | Plug, Expansion | 6 |
| 62***31 | Cover,Front | 1 |
| 62***32 | Cover,Front | 1 |
Komatsu : Saa6d140e-3n-8(S/N 110001-Up) : Engine : Front Cover Mounting And Breather(#110003-)
Komatsu : Saa6d140e-3n-8(S/N 110001-Up) : Engine : Front Power Take Off
| 01***30 | Bolt - Lower Oil Cooler Outlet Tubemounting | 3 |
| 04***18 | Ring, Snap | 1 |
| 06***04 | Bearing,Ball | 2 |
Komatsu : Saa6d140e-3n-8(S/N 110001-Up) : Engine : Front Power Take Off (Sandy And Dusty Spec.)
| 01***30 | Bolt - Lower Oil Cooler Outlet Tubemounting | 3 |
| 04***18 | Ring, Snap | 1 |
| 06***04 | Bearing,Ball | 2 |
Komatsu : Saa6d140e-3n-8(S/N 110001-Up) : Engine : Fuel Control (Chassis Mount)(#111971-)
| 78***06 | Controller | 1 |
| 78***00 | Controller | 1 |
| 78***01 | Controller | 1 |
Komatsu : Saa6d140e-3n-8(S/N 110001-Up) : Engine : Fuel Control (Chassis Mount)(#112158-)
| 78***01 | Controller | 1 |
Komatsu : Saa6d140e-3n-8(S/N 110001-Up) : Engine : Fuel Filter(#111971-)
| 01***20 | Bolt,(Forwarded Individually Parts) | 2 |
| 01***35 | Bolt, Cover | 3 |
| 01***20 | Bolt, Hose Clamps (Inlet And Return Line Hoses) | 1 |
Komatsu : Saa6d140e-3n-8(S/N 110001-Up) : Engine : Fuel Injector
| 01***10 | Bolt - Relay And Flasher Mounting | 6 |
| 01***35 | Bolt | 6 |
| 01***70 | Bolt | 6 |
Komatsu : Saa6d140e-3n-8(S/N 110001-Up) : Engine : Fuel Piping(#110003-)
| 01***25 | Screw | 3 |
| 01***30 | Bolt,See Fig. K4010-17a0 | 15 |
| 01***16 | Bolt, Mount Solenoid Valve | 2 |
Komatsu : Saa6d140e-3n-8(S/N 110001-Up) : Engine : Fuel Pump Supply And Return Piping (Low-Viscosity Fuel Spec.) (Regulation Of Epa And Eu 2nd)(#111971-)
| 01***30 | Bolt,See Fig. K4010-17a0 | 4 |
| 01***35 | Bolt | 2 |
| 01***20 | Bolt, Hose Clamps (Inlet And Return Line Hoses) | 1 |
Komatsu : Saa6d140e-3n-8(S/N 110001-Up) : Engine : Fuel Pump Supply And Return Piping (Regulation Of Epa And Eu 2nd)(#111971-)
| 01***30 | Bolt,See Fig. K4010-17a0 | 4 |
| 01***35 | Bolt | 2 |
| 01***20 | Bolt, Hose Clamps (Inlet And Return Line Hoses) | 1 |
Komatsu : Saa6d140e-3n-8(S/N 110001-Up) : Engine : Fuel Return(#111971-)
| 01***20 | Bolt, Hose Clamps (Inlet And Return Line Hoses) | 1 |
| 01***25 | Bolt, Mount Engine Oil Drain To Fuel Tank | 2 |
| 01***30 | Bolt - Lower Oil Cooler Outlet Tubemounting | 2 |
Komatsu : Saa6d140e-3n-8(S/N 110001-Up) : Engine : Fuel Supply Pump (Feed Pump) (Low-Viscosity Fuel Spec.) (Regulation Of Epa And Eu 2nd) (Inner Parts)(#111971-)
| ND***70 | Washer,Union | 6 |
| ND***10 | Spring, Check Valve | 2 |
| ND***42 | Screw | 1 |
Komatsu : Saa6d140e-3n-8(S/N 110001-Up) : Engine : Fuel Supply Pump (Feed Pump) (Regulation Of Epa And Eu 2nd) (Inner Parts)(#111971-)
| ND***70 | Washer,Union | 6 |
| ND***10 | Spring, Check Valve | 2 |
| ND***42 | Screw | 1 |
Komatsu : Saa6d140e-3n-8(S/N 110001-Up) : Engine : Fuel Supply Pump (Pump) (Low-Viscosity Fuel Spec.) (Regulation Of Epa And Eu 2nd) (Inner Parts)(#111971-)
| 62***30 | Fuel Pump Ass'Y | 1 |
| ND***70 | Washer,Union | 5 |
| ND***60 | Screw | 1 |
Komatsu : Saa6d140e-3n-8(S/N 110001-Up) : Engine : Fuel Supply Pump (Pump) (Regulation Of Epa And Eu 2nd) (Inner Parts)(#111971-)
| 62***10 | Fuel Pump Ass'Y | 1 |
| ND***70 | Washer,Union | 5 |
| ND***60 | Screw | 1 |
Komatsu : Saa6d140e-3n-8(S/N 110001-Up) : Engine : Fuel Supply Pump And Common Rail Mounting (Low-Viscosity Fuel Spec.) (Regulation Of Epa And Eu 2nd)(#111971-)
| 01***35 | Bolt,(F4320-52a0 -5 ) | 4 |
| 01***12 | Nut | 1 |
| 01***32 | Washer,(With Auto Emergency Steering) | 4 |
Komatsu : Saa6d140e-3n-8(S/N 110001-Up) : Engine : Fuel Supply Pump And Common Rail Mounting (Regulation Of Epa And Eu 2nd)(#111971-)
| 01***35 | Bolt,(F4320-52a0 -5 ) | 4 |
| 01***12 | Nut | 1 |
| 01***32 | Washer,(With Auto Emergency Steering) | 4 |
Komatsu : Saa6d140e-3n-8(S/N 110001-Up) : Engine : Fuel Supply Pump Bracket And Connection Cover(#110003-)
| 01***12 | Bolt,(See Fig. K0210-16a0) | 4 |
| 01***20 | Bolt, Hose Clamps (Inlet And Return Line Hoses) | 4 |
| 01***20 | Bolt - Mount Risers To Cab Floor | 2 |
Komatsu : Saa6d140e-3n-8(S/N 110001-Up) : Engine : Fuel Supply Pump Lubricator(#110003-)
| 07***12 | Gasket,(Without Air Compressor Type) (K2) | 2 |
| 07***10 | Screw, Banjo Connector (M10-1.25x20) | 1 |
| 62***10 | Tube, Supply | 1 |
Komatsu : Saa6d140e-3n-8(S/N 110001-Up) : Engine : Head Cover
| 62***10 | Cover, Cylinder Head | 6 |
| 62***20 | Gasket,(See Fig.A1110) | 6 |
| 62***30 | Gasket (K1) | 6 |
Komatsu : Saa6d140e-3n-8(S/N 110001-Up) : Engine : Head Cover Bolt
| 01***55 | Screw | 18 |
Komatsu : Saa6d140e-3n-8(S/N 110001-Up) : Engine : Heat Shield (1/2) Turbocharger And Exhaust Manifold(#110003-)
| 01***20 | Bolt, Hose Clamps (Inlet And Return Line Hoses) | 5 |
| 01***25 | Bolt, Mount Engine Oil Drain To Fuel Tank | 8 |
| 01***30 | Bolt - Lower Oil Cooler Outlet Tubemounting | 2 |
Komatsu : Saa6d140e-3n-8(S/N 110001-Up) : Engine : Heat Shield (2/2) Muffler And Fuel Piping(#110003-)
| 01***16 | Bolt, Mount Solenoid Valve | 24 |
| 01***25 | Bolt, Mount Engine Oil Drain To Fuel Tank | 2 |
| 01***75 | Bolt (M10-1.50x75) | 1 |
Komatsu : Saa6d140e-3n-8(S/N 110001-Up) : Engine : Idler Gear
| 01***30 | Bolt - M8 X 30lg | 6 |
| 61***60 | Pin, Dowel | 1 |
| 61***22 | Bolt | 1 |
Komatsu : Saa6d140e-3n-8(S/N 110001-Up) : Engine : Muffler(#110003-)
| 01***35 | Bolt | 3 |
| 01***40 | Bolt | 1 |
| 01***45 | Bolt | 1 |
Komatsu : Saa6d140e-3n-8(S/N 110001-Up) : Engine : Name Plate And Caution Plate (English)
| 04***50 | Screw | 4 |
| 09***45 | Plate? Name,(Limited Supply) | 1 |
| 60***40 | Plate? Name,(Limited Supply) | 1 |
Komatsu : Saa6d140e-3n-8(S/N 110001-Up) : Engine : Name Plate And Caution Plate (Japanese-English) (Regulation Of Epa And Eu)
| 04***50 | Screw | 4 |
| 61***10 | Plate? License,(Limited Supply) | 1 |
| 61***11 | Plate? License,(Limited Supply) | 1 |
Komatsu : Saa6d140e-3n-8(S/N 110001-Up) : Engine : Oil Cooler
| 01***20 | Bolt, Wiring Harness Mounting Bracket | 2 |
| 01***30 | Bolt - Lower Oil Cooler Outlet Tubemounting | 13 |
| 01***60 | Bolt - Upper Cooler Inlet Tubemounting | 2 |
Komatsu : Saa6d140e-3n-8(S/N 110001-Up) : Engine : Oil Filter(#110282-)
| 01***60 | Bolt - Upper Cooler Inlet Tubemounting | 2 |
| 01***05 | Screw | 2 |
| 60***40 | Cartridge, Oil Filter | 1 |
Komatsu : Saa6d140e-3n-8(S/N 110001-Up) : Engine : Oil Level Gauge (Cold Terran Spec.)(#111016-)
| 01***20 | Bolt, Hose Clamps (Inlet And Return Line Hoses) | 2 |
| 01***08 | Nut,See Fig. K4010-04a0 | 1 |
| 04***10 | Clip | 1 |
Komatsu : Saa6d140e-3n-8(S/N 110001-Up) : Engine : Oil Level Gauge(#110003-)
| 01***20 | Bolt, Hose Clamps (Inlet And Return Line Hoses) | 2 |
| 01***08 | Nut,See Fig. K4010-04a0 | 1 |
| 04***10 | Clip | 1 |
Komatsu : Saa6d140e-3n-8(S/N 110001-Up) : Engine : Oil Pan And Suction Tube (Cold Terran Spec.)(#111016-)
| 01***25 | Bolt,(For Canvas Canopy?Head Guard) | 1 |
| 01***30 | Bolt,(With Body Positioner) | 1 |
| 01***12 | Bolt,(See Fig. K0210-16a0) | 3 |
Komatsu : Saa6d140e-3n-8(S/N 110001-Up) : Engine : Oil Pan And Suction Tube(#110003-)
| 01***25 | Bolt,(For Canvas Canopy?Head Guard) | 1 |
| 01***30 | Bolt,(With Body Positioner) | 1 |
| 01***12 | Bolt,(See Fig. K0210-16a0) | 3 |
Komatsu : Saa6d140e-3n-8(S/N 110001-Up) : Engine : Oil Pump
| 01***25 | Bolt,(Rear Attachment Less) | 4 |
| 01***30 | Bolt,(Not Used When Towing Winch) | 1 |
| 01***40 | Bolt,For Weight Adjusting Bolt | 2 |
Komatsu : Saa6d140e-3n-8(S/N 110001-Up) : Engine : Piston
| 02***13 | Pin, Dowel | 2 |
| 04***20 | Ring, Retaining | 12 |
| 62***10 | Bolt | 2 |
Komatsu : Saa6d140e-3n-8(S/N 110001-Up) : Engine : Rocker Arm
| 01***08 | Nut,R.H. Thread | 2 |
| 01***32 | Washer, (Without Emergency Steering) | 6 |
| 04***14 | Pin, Dowel | 18 |
Komatsu : Saa6d140e-3n-8(S/N 110001-Up) : Engine : Starting Motor (11kw) (Inner Parts)(#110001-111449)
| 60***21 | Starting Motor Assembly (11kw) | 1 |
| KD***40 | Spring,Spring | 4 |
| KD***57 | Bearing, Ball, Front | 1 |
Komatsu : Saa6d140e-3n-8(S/N 110001-Up) : Engine : Starting Motor Mounting (11kw)
| 01***40 | Bolt (Kit) | 3 |
| 01***16 | Bolt - Starting Motor Ground Cable | 1 |
| 08***19 | Band - Tie Hose To Wire Harness | 1 |
Komatsu : Saa6d140e-3n-8(S/N 110001-Up) : Engine : Tension Pulley (Sandy And Dusty Spec.)(#110003-)
| 01***20 | Bolt, Wiring Harness Mounting Bracket | 2 |
| 01***25 | Bolt,(For Canvas Canopy?Head Guard) | 1 |
| 01***35 | Bolt, Mount Ground Driven Steering Pump | 1 |
Komatsu : Saa6d140e-3n-8(S/N 110001-Up) : Engine : Tension Pulley(#110003-)
| 01***20 | Bolt, Wiring Harness Mounting Bracket | 2 |
| 01***25 | Bolt,(For Canvas Canopy?Head Guard) | 1 |
| 01***35 | Bolt, Mount Ground Driven Steering Pump | 1 |
Komatsu : Saa6d140e-3n-8(S/N 110001-Up) : Engine : Turbocharger (Ktr110l-584e) (Inner Parts)(#110003-)
| 01***16 | Bolt | 4 |
| 01***16 | Bolt | 8 |
| 04***08 | Pin, Dowel | 1 |
Komatsu : Saa6d140e-3n-8(S/N 110001-Up) : Engine : Turbocharger And Oil Piping(#110003-)
| 01***35 | Bolt, Cover | 1 |
| 01***20 | Bolt, Hose Clamps (Inlet And Return Line Hoses) | 1 |
| 01***25 | Bolt, Mount Engine Oil Drain To Fuel Tank | 4 |
Komatsu : Saa6d140e-3n-8(S/N 110001-Up) : Engine : Vibration Damper
| 01***30 | Bolt,(Not Used When Towing Winch) | 6 |
| 01***25 | Bolt,L.H. (For Add. Air Compressor) | 6 |
| 01***32 | Washer,(Not Used With Emergency Str.) | 6 |
Komatsu : Saa6d140e-3n-8(S/N 110001-Up) : Engine : Water Line Plug (Without Corro.Rstr.)(#112318-)
| 07***12 | Gasket,(Without Air Compressor Type) (K1) | 2 |
| 60***20 | Plug,(For Shipping) | 2 |
Komatsu : Saa6d140e-3n-8(S/N 110001-Up) : Engine : Water Pump (Cold Terran Spec.)(#111016-)
| 01***80 | Bolt (M10-1.50x80) | 1 |
| 01***95 | Bolt,(For Shipping) | 3 |
| 01***30 | Bolt | 3 |
Komatsu : Saa6d140e-3n-8(S/N 110001-Up) : Engine : Water Pump Gasket Kit(#110003-)
| 02***37 | O-Ring,(For Pc750?1800) (A5010) | 2 |
| 07***45 | O-Ring,(F4320-61a0 -16 ), O-Ring; Was 07000-02145 | 1 |
| 07***70 | O-Ring,(For Pc1800e-6)(See Fig.A2041) | 1 |
Komatsu : Saa6d140e-3n-8(S/N 110001-Up) : Engine : Water Pump(#110003-)
| 01***80 | Bolt (M10-1.50x80) | 1 |
| 01***95 | Bolt,(For Shipping) | 3 |
| 01***30 | Bolt | 3 |
Komatsu : Saa6d140e-3n-8(S/N 110001-Up) : Engine : Wiring (1/3) Switch And Heater (Cold Terrain Spec.)(#111534-)
| 01***20 | Bolt,(Forwarded Individually Parts) | 4 |
| 01***14 | Bolt - Fuel Sensor Mounting | 2 |
| 01***55 | Bolt, Mount Dryer To Bracket And Frame | 2 |
Komatsu : Saa6d140e-3n-8(S/N 110001-Up) : Engine : Wiring (1/3) Switch And Heater(#110003-)
| 01***20 | Bolt,(Forwarded Individually Parts) | 4 |
| 01***14 | Bolt - Fuel Sensor Mounting | 2 |
| 01***55 | Bolt, Mount Dryer To Bracket And Frame | 2 |
Komatsu : Saa6d140e-3n-8(S/N 110001-Up) : Engine : Wiring (2/3) Fuel Injector (Cold Terrain Spec.)(#111534-)
| 01***12 | Bolt,(With Speedometer) | 1 |
| 01***25 | Bolt - Relay Mounting | 6 |
| 01***14 | Bolt - Fuel Sensor Mounting | 2 |
Komatsu : Saa6d140e-3n-8(S/N 110001-Up) : Engine : Wiring (2/3) Fuel Injector(#110003-)
| 01***12 | Bolt,(With Speedometer) | 1 |
| 01***25 | Bolt - Relay Mounting | 6 |
| 01***14 | Bolt - Fuel Sensor Mounting | 2 |
Komatsu : Saa6d140e-3n-8(S/N 110001-Up) : Engine : Wiring (3/3) Sensor (Cold Terrain Spec.)(#111534-)
| 01***80 | Bolt,(With Corrosion Resistor) | 1 |
| 01***14 | Bolt,(W/Joy Stick Str.)(W/O Heater) | 2 |
| 01***16 | Bolt - Starting Motor Ground Cable | 5 |
Komatsu : Saa6d140e-3n-8(S/N 110001-Up) : Engine : Wiring (3/3) Sensor And Switch(#110003-)
| 01***80 | Bolt,(With Corrosion Resistor) | 1 |
| 01***14 | Bolt,(W/Joy Stick Str.)(W/O Heater) | 2 |
| 01***16 | Bolt - Starting Motor Ground Cable | 4 |
SAA6D140E-3N-8(S/N 110001-UP) serial number reference
The PIN plate is riveted to the right-hand side of the cab on the lower frame, typically just behind the front idler or beneath the operator's window. The prefix is the first three characters of the 17-character ISO PIN stamped on this plate.
| Prefix | Identifies | Notes |
|---|---|---|
| X0A1T | SAA6D140E-3B | Tied to SAA6D140E-3B (110003-Up) in equipment guide; verify with dealer for SAA6D140E-3N-8 (110001-Up) fitment. |
Frequently asked questions
What engine powers the Komatsu D155AX-5 bulldozer?
The Komatsu D155AX-5 bulldozer is powered by the Komatsu SAA6D140E-3 series diesel engine, specifically the SA6D140E-3 or SAA6D140E-3 variant depending on the serial number range.
What is the operating weight of the Komatsu PC800-6 excavator?
The operating weight of the Komatsu PC800-6 excavator varies by configuration, typically ranging from approximately 78,600 lb to 81,400 lb.
What engine replaced the SAA6D140E-3 in later Komatsu models?
The SAA6D140E-5 engine replaced the SAA6D140E-3 in later Komatsu models, such as the D275A-5R and PC800-8, offering increased power and improved emissions compliance.
What SAA6D140E-3N-8(S/N 110001-UP) owners discuss
What are the known powertrain and hydraulic behaviors associated with the Komatsu SAA6D140E-3N-8 engine series?
The SAA6D140E-3N-8 is a 6-cylinder, 14.0-liter (854 cu in) turbocharged and aftercooled diesel engine. It is commonly paired with Komatsu hydraulic excavators and dozers. Community consensus indicates that Komatsu machines of this era are generally smooth to operate and fuel-efficient. However, owners note that hydraulic performance is tightly linked to engine RPM; if the engine drops heavily in RPM under load, the hydraulic system may be placing excessive load on the engine or the engine may be unable to produce expected power. A common diagnostic pattern is that if all hydraulic functions become slow simultaneously, the issue is likely shared (oil level, filters, engine speed) rather than a single pump failure. If only one function is slow, the main pump is less likely the culprit. The line is noted for having valve and pump combinations that require specific configuration checks, as updates and redesigns were frequent across series. If a hydraulic pump fails, the engine may be near the end of its service life due to the design philosophy of wearing out complete machines simultaneously, which impacts resale value.
What undercarriage or wear patterns are typical for machines powered by this engine series?
Machines equipped with the SAA6D140E-3N-8, such as the PC600-6/PC600-7 and D155AX-5 dozers, are heavy-duty units subject to significant undercarriage wear. Typical wear patterns include track-chain elongation and roller degradation, particularly in dusty or abrasive environments. Owners report that track tension must be monitored closely, as repeated loosening is a common issue linked to undercarriage wear rather than just adjuster failure. Pulling to one side during travel is often diagnosed as a result of mechanical resistance from mud/debris packed into the undercarriage or uneven track tension, rather than immediate travel motor failure. Testing travel in both forward and reverse directions is recommended to isolate hydraulic final drive issues from mechanical track binding. The heavy operating weights of these machines (often exceeding 60,000 lbs for the machine class) accelerate wear on rollers and idlers.
What are the specific engine quirks per the SAA6D140E-3N-8 series?
The SAA6D140E-3N-8 series (specifically for serial ranges starting at 110001) utilizes a Komatsu Variable Geometry Turbocharger with air-to-air aftercooler and EGR. A known quirk involves the fuel pump drive gear alignment; if the woodruff key is missing or the pump is not aligned to the mark on the cam gear per specifications, the engine will not run. The engine is sensitive to air and fuel restrictions; loss of power under digging load is frequently traced to clogged air filters, fuel filters, or restricted fuel tank venting rather than internal engine failure. Overheating is a common complaint during heavy excavation, often caused by material packed between the radiator, hydraulic oil cooler, and charge-air cooler, rather than coolant loss. The engine requires specific Komatsu EO or TO series engine oil and Komatsu Super-coolant AF-NAC for proper operation.
What are common electrical or sensor issues reported for this engine?
Komatsu excavators with this engine generation rely heavily on electronic control systems. Common electrical issues include intermittent starting, dashboard failures, and random shutdowns triggered by a single faulty sensor or unstable power supply. A specific fault code, E-14, indicates a malfunction in the engine coolant temperature sensor circuit or an abnormal reading detected by the Engine Control Module (ECM). Owners report that multiple fault codes often stem from battery state of charge, poor engine/chassis grounds, or corroded connectors rather than individual component failures. Intermittent starting is also linked to the battery showing acceptable voltage until the starter is loaded; a voltage drop test under load is recommended before replacing the starter. The ECM is sensitive to voltage spikes, so maintaining clean and tight grounds is critical.
What should be checked when buying a used machine with the SAA6D140E-3N-8 engine?
When purchasing a used machine with the SAA6D140E-3N-8 (S/N 110001-UP), verify the exact serial prefix to confirm the engine model, as configurations vary by machine type (e.g., PC600-6 vs. D155AX-5). Check the fuel pump drive gear for the presence of the woodruff key and proper alignment to the cam gear mark. Inspect the cooling package (radiator, hydraulic oil cooler, charge-air cooler) for packed debris between the stacks. Test hydraulic performance both cold and hot; weakness when hot may indicate internal pump or valve leakage. Check for multiple fault codes and verify battery load capacity. Inspect undercarriage for uneven wear or track tension issues. Confirm the engine oil and coolant specifications match Komatsu requirements (EO/TO oil, Super-coolant AF-NAC). Be aware that if the hydraulic pump has been replaced or failed, the engine may be near the end of its service life.
What are the critical safety considerations for the cooling system and turbocharger on this engine?
The SAA6D140E-3N-8 uses a turbocharger (Komatsu KTR110L or equivalent) and an air-to-air aftercooler. Safety-critical fixes include ensuring the cooling package is free of debris to prevent overheating, which can lead to catastrophic engine damage. The engine coolant temperature sensor is vital for protecting the engine from overheating; a faulty sensor can trigger automatic deceleration or shutdown. Have your dealer verify the integrity of the charge-air hoses and clamps, as loose connections can cause air entering the fuel supply or boost leaks, leading to power loss and excessive smoke. Always allow the engine to idle before shutdown to cool the turbocharger bearings. Verify the coolant level when cold and check for signs of pressurization or expulsion, which may indicate deeper engine issues. Have your dealer verify the condition of the turbocharger shaft and housing for play or oil leaks.
Compiled from owner and technician discussions across the industry — experiences vary by serial range and machine history.
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