Komatsuengine(no series)

Komatsu SAA6D108E-2C-N8(S/N 19030-UP)

Maintenance schedule, common problems & OEM parts breakdown

Search live SAA6D108E-2C-N8(S/N 19030-UP) parts

The Komatsu SAA6D108E-2C-N8 (S/N 19030-UP) is a 6-cylinder, 4-stroke, turbocharged, aftercooled diesel engine with an 8.3L displacement. It delivers 196 hp at 2050 rpm and is primarily fitted to the PC300-6 series crawler excavators. This engine replaced the earlier SAA6D108E-2A variants and serves as the power source for mid-size heavy earthmoving equipment in the 20-ton class. Configurations include standard and North American emissions packages, with the N8 suffix denoting specific regional compliance. Production years span the late 1990s through the mid-2000s, bridging the gap between the PC300-5 and PC300-7 generations.

Across the SAA6D108E series, the transition from the -2A to the -2C-N8 generation introduced refined fuel injection calibration and updated emissions hardware to meet evolving regulatory standards without altering the core block architecture. The machine remains critical in the used and parts market because the PC300-6 platform is ubiquitous in global construction fleets. Its widespread adoption ensures high availability of remanufactured components and robust aftermarket support. The engine's modular design allows for cost-effective in-frame overhauls, keeping older excavators economically viable long after newer dash-number models have entered the market.

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 SAA6D108E-2C-N8(S/N 19030-UP) specifications

Engine

Model	SAA6D108E-2C-N8
Series/Generation	SAA6D108E-2 (Build 7C)
Net Power	196 hp (146 kW) @ 2050 rpm
Gross Power	245 hp (183 kW)
Displacement	8.3 L (506.6 cu in)
Cylinders	6
Emissions Tier	Tier 4 Final / EU Stage V

Weights

Operating Weight	33,129 kg (73,039 lb) (varies by configuration/series)
Shipping Weight	Not documented for this exact serial range — verify with your dealer
Ground Pressure	62 kPa (8.97 psi)

Dimensions

Transport Length	11.1 m (36.4 ft)
Transport Width	3.0 m (9.8 ft)
Transport Height	3.4 m (11.1 ft)
Track Gauge	2.4 m (7.8 ft)
Ground Clearance	0.5 m (1.6 ft)
Tail Swing Radius	3.3 m (10.8 ft)

Performance

Travel Speed	5.5 km/h (3.4 mph)
Drawbar Pull	225 kN (50,706 lbf)
Swing Speed	10 rpm
Gradeability	Not documented for this exact serial range — verify with your dealer

Service capacities (summary)

Fuel Tank	540 L (142.7 gal)
Hydraulic System	205 L (54.2 gal)
Engine Oil	28 L (7.4 gal)
Cooling System	30 L (8 gal)

Values vary by configuration, region, and serial range — confirm against your machine before planning transport or lifts.

Komatsu SAA6D108E-2C-N8(S/N 19030-UP) maintenance schedule

Service interval	Tasks
Every 10 h	Check engine oil level and condition. Check hydraulic fluid level at sight glass. Check coolant level and ensure cap is secure. Drain water from fuel separator. Check DEF level. Check air filter restriction indicator.
Every 250 h	Change engine oil and filter. Grease all points (boom, stick, bucket, swing bearing). Check fluid levels. Check air filter outer element. Inspect belts and hoses. Perform visual walk-around inspection.
Every 500 h	Replace fuel filter. Replace hydraulic return filter. Perform battery load test. Test coolant SCA concentration. Collect KOWA oil sample. Perform detailed undercarriage visual inspection.
Every 1,000 h	Collect hydraulic oil sample. Change final drive oil. Inspect turbocharger. Check valve adjustment. Inspect structural welds. Measure undercarriage wear.
Every 2,000 h	Change hydraulic oil. Flush and replace coolant. Service transmission. Perform comprehensive component evaluation. Check KDPF status. Replace worn belts and hoses.

Servicing the SAA6D108E-2C-N8(S/N 19030-UP) beyond the schedule

Predictive Maintenance & Fluid Analysis

Utilize KOWA fluid analysis at every 500-hour interval to monitor engine wear metals and hydraulic contamination. Track coolant SCA concentration levels to prevent cavitation in the SAA6D108E-2C-N8 cylinder liners. Monitor DEF levels daily for Tier 4 compliance. Analyze hydraulic oil particle counts to detect pump wear early. Use KOMTRAX telematics to track load frequency and fault codes, identifying trends before failure occurs. Replace the fuel water separator daily to protect the common rail injectors from contamination.

Corrective & Common Repairs

Address intermittent starting or random shutdowns by inspecting the engine controller power supply and EPC system wiring. Replace worn hydraulic hoses and seals to prevent pressure drops that cause sluggish boom movement. Repair turbocharger leaks or excessive smoke by checking intercooler connections and valve clearances. Fix cooling system overheating by cleaning radiator fins and replacing failed water pumps. Inspect final drive gears for grinding noises indicating bearing wear. Replace faulty sensors triggering E02 or E10 fault codes to restore monitor panel functionality.

Overhaul & Rebuild Points

Perform an in-frame overhaul when compression drops or oil consumption exceeds limits. Replace cylinder liners, pistons, and piston rings using the SAA6D108E-2 overhaul kit. Inspect the crankshaft main and rod bearings for scoring during disassembly. Replace all intake and exhaust valves if carbon buildup or burning is evident. Check the cylinder head for warping and resurface if necessary. Rebuild the hydraulic main pump and swing motor if flow rates fall below specification or internal leakage is detected.

Seasonal & Environment Servicing

In cold climates, verify coolant glycol content and use appropriate winter-grade engine oil to ensure cold starts. Drain the fuel water separator more frequently in humid conditions to prevent ice formation. In dusty environments, clean the air filter outer element more often and check the restriction indicator daily. Protect the radiator and oil cooler cores from debris buildup using guard screens. Inspect battery terminals and alternator belts for corrosion or wear caused by temperature extremes. Verify DEF tank heater operation to prevent crystallization in freezing temperatures.

SAA6D108E-2C-N8(S/N 19030-UP) common service parts

Part number	Part	Notes
600-311-8293	Cartridge, Fuel Filter	Fuel system service	Check fitment →
600-311-8321	Cartridge,Fuel Filter	Fuel system service	Check fitment →
6221-71-6202	Fuel Filter Assembly	Fuel system service	Check fitment →
6221-71-6302	Fuel Filter Ass'Y	Fuel system service	Check fitment →
ND092220-0040	Filter,Fuel	Fuel system service	Check fitment →

Always confirm against your machine's serial number — cross-check any part in Heavy Parts AI before ordering.

SAA6D108E-2C-N8(S/N 19030-UP) fault codes & troubleshooting

Code	Meaning	Likely cause	What to do
CA111	Engine Controller (ECM) Critical Internal Failure	Internal ECM hardware fault, corrupted memory, or power supply interruption to the controller.	Check ECM power and ground connections; replace or reprogram the ECM if connections are secure.
CA115	Engine Speed Sensor and Backup Speed Sensor Error	Faulty crankshaft speed sensor, damaged wiring harness, or poor connector contact.	Inspect the speed sensor and wiring for damage; verify sensor gap and voltage output.
CA122	Charged Air Pressure Sensor High Error	Sensor feedback voltage too high, indicating a potential sensor failure or short to power.	Check the intake air pressure sensor wiring and connector; replace the sensor if faulty.
CA123	Charged Air Pressure Sensor Low Error	Sensor feedback voltage too low, indicating a short to ground or open circuit.	Inspect the sensor wiring for chafing or shorts; verify sensor operation.
CA131	Throttle Sensor High Error	Throttle position sensor feedback voltage is too high.	Check the throttle sensor wiring and connector; replace the sensor if necessary.
CA132	Throttle Sensor Low Error	Throttle position sensor feedback voltage is too low.	Inspect the throttle sensor wiring for shorts or opens; verify sensor function.
CA144	Coolant Temperature Sensor High Error	Coolant temperature sensor feedback voltage is too high, indicating a potential sensor fault or open circuit.	Check the coolant temperature sensor wiring and connector; replace the sensor if faulty.
CA145	Coolant Temperature Sensor Low Error	Coolant temperature sensor feedback voltage is too low, indicating a short to ground.	Inspect the sensor wiring for shorts; verify sensor operation.
CA441	Battery Voltage Low Error	Low system voltage, potentially due to a weak battery, failing alternator, or high resistance in charging circuit.	Check battery condition, alternator output, and charging circuit connections.
CA442	Battery Voltage High Error	High system voltage, potentially due to a failing voltage regulator or alternator issue.	Check alternator output and voltage regulator function; inspect wiring.

Codes and remedies are general guidance for this model family — always confirm with diagnostic tooling and your dealer before major repairs.

SAA6D108E-2C-N8(S/N 19030-UP) attachments & work tools

Hydraulic Excavator Buckets

Typical sizes for this class range from 0.7 to 2.4 cubic yards (0.5 to 1.8 cubic meters). Factory specifications for the PC340LC-6 indicate a standard bucket capacity of 1.8 cubic yards (1.4 cubic meters) and a heavy-duty option of 2.4 cubic yards (1.8 cubic meters). Variations exist based on the specific machine configuration and series.

Coupler and Mounting Systems

The machine utilizes a standard quick coupler interface compatible with the specified bucket sizes. Specific coupler part numbers are not documented in the provided sources; verify the exact mounting geometry with your dealer.

Hydraulic Kit Requirements

Tools requiring auxiliary hydraulics, such as hydraulic breakers or hammers, must be matched to the machine's hydraulic flow and pressure specifications. The PC340LC-6 is rated at 141.6 gallons per minute (536 liters per minute) at 10 rpm. Verify the specific hydraulic kit arrangement with your dealer.

Factory Configurations and Guarding

Factory options include heavy-duty guarding and undercarriage configurations suitable for the 73,039.2 lb (33,150 kg) operating weight class. Specific guarding part numbers are not documented in the provided sources; verify available options with your dealer.

All SAA6D108E-2C-N8(S/N 19030-UP) assemblies by section

Every catalogued assembly group for the Komatsu SAA6D108E-2C-N8(S/N 19030-UP). Open an assembly to preview the parts inside — full OEM part numbers are available in Heavy Parts AI.

Engine

Komatsu : Saa6d108e-2c-N8(S/N 19030-Up) : Engine : After Cooler Mounting(#33518-)

07***55	Clamp, Hose	2
07***70	Clamp,Hose	6
62***30	Hose	1
62***40	Hose	3

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Komatsu : Saa6d108e-2c-N8(S/N 19030-Up) : Engine : After Cooler(#32810-)

62***00

Air Cooler Ass'Y

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Komatsu : Saa6d108e-2c-N8(S/N 19030-Up) : Engine : Air Cleaner(#33518-)

08***10	Tie, Cable	1
56***80	Clip, Cover Wing Nut	1
56***70	Nut, Cover Wing	1
56***50	Nut, Wing	1

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Komatsu : Saa6d108e-2c-N8(S/N 19030-Up) : Engine : Air Intake Manifold

01***50	Screw	24
01***60	Bolt, Mounting	5
01***75	Screw	5
01***00	Bolt	1

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Komatsu : Saa6d108e-2c-N8(S/N 19030-Up) : Engine : Alternator (35a) (With Non Hardening Pulley) (Inner Parts)(#23237-)

60***61	Alternator A. (35a),(See Fig.A6010-B2f8)	1
KD***70	Bushing,Insulate	1
KD***40	Bushing,Insulate	1
KD***30	Collar,Insulate	1

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Komatsu : Saa6d108e-2c-N8(S/N 19030-Up) : Engine : Alternator Mounting (35a) (With Non Hardening Pulley)(#27237-)

01***65	Bolt	1
01***10	Nut,(Dust?Drip Proof? Trimming S.)	1
01***11	Nut,(For Center Guard)	2
01***23	Washer	2

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Komatsu : Saa6d108e-2c-N8(S/N 19030-Up) : Engine : Camshaft And Tappet

01***20	Bolt,(Forwarded Individually Parts)	2
04***16	Fitting Wedge	1
62***31	Thrust Washer	1
62***20	Gear,Camshaft	1

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Komatsu : Saa6d108e-2c-N8(S/N 19030-Up) : Engine : Caution Plate (English)(#32211-)

09***63

Plate? Instruction,Air Cleaner (Single Element)

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Komatsu : Saa6d108e-2c-N8(S/N 19030-Up) : Engine : Caution Plate (Japanese-English)(#32211-)

09***63

Plate? Instruction,Air Cleaner (Double Element)

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Komatsu : Saa6d108e-2c-N8(S/N 19030-Up) : Engine : Cooling Fan

01***30	Bolt - Lower Oil Cooler Outlet Tubemounting	12
60***50	Fan,Cooling	1
61***30	Holding Fixture	1

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Komatsu : Saa6d108e-2c-N8(S/N 19030-Up) : Engine : Crank Pulley (With Non Hardening Pulley)(#27237-)

01***45	Bolt,Nylock	1
61***20	Collar,Taper	1
61***21	Collar,Taper	1
61***31	Plate	1

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Komatsu : Saa6d108e-2c-N8(S/N 19030-Up) : Engine : Crankshaft(#24429-)

61***40	Fitting Wedge	1
62***10	Crankshaft Bearing	7
62***50	Thrust Metal Ass'Y	1
62***10	Crankshaft Bearing	7

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Komatsu : Saa6d108e-2c-N8(S/N 19030-Up) : Engine : Cylinder Block Gasket Kit(#33518-)

07***18	O-Ring,(See Fig.1601-29?1602-17)	1
07***22	O-Ring,(See Fig.Y1852-01a0)	1
07***28	O-Ring, Strainer To Control Pump Line	1
07***50	O-Ring,Front Cover Plate	1

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Komatsu : Saa6d108e-2c-N8(S/N 19030-Up) : Engine : Cylinder Block Mounting(#29035-)

01***20	Bolt,(Forwarded Individually Parts)	2
01***20	Bolt, Hose Clamps (Inlet And Return Line Hoses)	7
07***12	Gasket,(Without Air Compressor Type) (K2)	1
07***12	Gasket,Injection Pump Piping	2

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Komatsu : Saa6d108e-2c-N8(S/N 19030-Up) : Engine : Cylinder Block(#29035-)

04***14	Pin, Dowel	2
04***28	Pin, Dowel - Transmission Case, Pin-Dowel	2
04***08	Adapter Sleeves	6
04***12	Pin,Spring (See Fig.0201)	1

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Komatsu : Saa6d108e-2c-N8(S/N 19030-Up) : Engine : Cylinder Head

07***08	Plug,(Without Lock-Up), Plug	7
07***10	Plug, Expansion	9
07***16	Plug	17
07***16	Plug,(Without Corrosion Resistor)	4

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Komatsu : Saa6d108e-2c-N8(S/N 19030-Up) : Engine : Cylinder Head Cover Mounting (For Regulation Of Epa)(#33518-)

01***16	Bolt, Mount Solenoid Valve	1
01***16	Bolt - Starting Motor Ground Cable	1
01***20	Bolt - Mount Risers To Cab Floor	1
01***06	Nut	1

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Komatsu : Saa6d108e-2c-N8(S/N 19030-Up) : Engine : Cylinder Head Cover(#29035-)

61***12	Cover,Cylinder Head	1
61***20	Screw	4
61***30	Washer,(B)	4
61***42	Packing,Cylinder Head Cover	4

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Komatsu : Saa6d108e-2c-N8(S/N 19030-Up) : Engine : Cylinder Head Gasket Kit(#33518-)

07***12	Gasket,(Without Air Compressor Type) (K2)	4
07***12	Gasket,(Without Air Compressor Type) (K1)	5
08***14	Band,(For Additional Fuel Strainer)	3
08***19	Band,(Without Air Conditioner)	3

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Komatsu : Saa6d108e-2c-N8(S/N 19030-Up) : Engine : Damper (With Non Hardening Pulley)

01***35	Bolt, Mount Bracket To Floor	6
62***20	Damper Ass'Y	1
62***10	Pulley?Non Hardening,(For Air Conditioner)	1

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Komatsu : Saa6d108e-2c-N8(S/N 19030-Up) : Engine : Electrical Wiring(#27237-)

01***08	Bolt, Mount Relays And Flasher	2
01***20	Bolt,(Forwarded Individually Parts)	1
01***90	Screw	1
01***16	Bolt - Starting Motor Ground Cable	3

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Komatsu : Saa6d108e-2c-N8(S/N 19030-Up) : Engine : Engine Stop Motor (Forwarded Individually Parts)(#32486-)

60***60

Motor Ass'Y,Engine Stop

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Komatsu : Saa6d108e-2c-N8(S/N 19030-Up) : Engine : Engine Stop Motor Bracket (Forwarded Individually Parts)(#32486-)

01***25	Bolt - Relay Mounting	2
01***06	Nut	2
62***10	Bracket	1

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Komatsu : Saa6d108e-2c-N8(S/N 19030-Up) : Engine : Exhaust Manifold(#27237-)

01***25	Grub Screw	4
01***20	Bolt, Hose Clamps (Inlet And Return Line Hoses)	1
01***45	Bolt, Bracket Mounting	2
01***65	Bolt, Mount Tube To Divider Valve	1

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Komatsu : Saa6d108e-2c-N8(S/N 19030-Up) : Engine : Fan Drive (With Non Hardening Pulley)(#28673-)

01***30	Bolt - Lower Oil Cooler Outlet Tubemounting	2
01***00	Bolt (M10-1.50x100)	2
01***19	Nut	1
01***60	Washer,(Without Rops Guard? Canopy)	1

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Komatsu : Saa6d108e-2c-N8(S/N 19030-Up) : Engine : Flywheel

01***40	Bolt	8
61***61	Washer, Plain (14mm)	8
61***51	Gear, Ring	1
62***10	Flywheel Ass'Y	1

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Komatsu : Saa6d108e-2c-N8(S/N 19030-Up) : Engine : Flywheel Housing(#27237-)

01***45	Bolt,(Noise Abatement Part)	9
01***55	Bolt,(With Joy Stick Steering)	2
01***05	Bolt	2
07***16	Gasket,(For Pc750-6) (See Fig.A2110)	2

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Komatsu : Saa6d108e-2c-N8(S/N 19030-Up) : Engine : Front Cover Mounting(#29035-)

01***16	Bolt, Mounting Transmission Control Switch	2
07***50	O-Ring,Front Cover Plate	1
61***51	Plate, Cover	1

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Komatsu : Saa6d108e-2c-N8(S/N 19030-Up) : Engine : Front Cover(#29035-)

01***20	Bolt,(Forwarded Individually Parts)	4
01***55	Screw	8
01***65	Bolt,(For Alternator Bracket Mount)	8
01***90	Screw	2

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Komatsu : Saa6d108e-2c-N8(S/N 19030-Up) : Engine : Front Hanger

01***20	Bolt, Hose Clamps (Inlet And Return Line Hoses)	1
62***11	Hanger,Front	1

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Komatsu : Saa6d108e-2c-N8(S/N 19030-Up) : Engine : Fuel Filter(#27237-)

01***30	Bolt - Lower Oil Cooler Outlet Tubemounting	2
07***12	Gasket,Mechanical Pump Piping	1
07***12	Gasket,(Without Air Compressor Type) (K1)	6
07***14	Bolt,Joint	1

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Komatsu : Saa6d108e-2c-N8(S/N 19030-Up) : Engine : Fuel Injection Pump (Feed Pump) (For Regulation Of Epa) (Inner Parts)(#35434-)

ND***61	Feed Pump Ass'Y	1
ND***40	Washer? 1mm,Plate	1
ND***70	Washer,Union	4
ND***10	Spring, Check Valve	2

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Komatsu : Saa6d108e-2c-N8(S/N 19030-Up) : Engine : Fuel Injection Pump (Governor) (1/3) (For Regulation Of Epa) (Inner Parts)(#35434-)

ND***40	Plug,Screw	1
ND***20	Flyweight Ass'Y	1
ND***90	Washer,Snap	2
ND***00	Ring,Snap	1

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Komatsu : Saa6d108e-2c-N8(S/N 19030-Up) : Engine : Fuel Injection Pump (Governor) (2/3) (For Regulation Of Epa) (Inner Parts)(#35434-)

ND***20	Washer? 1.0mm,Cover Plate	2
ND***70	O-Ring	1
ND***10	Adapter	1
ND***90	Seal,Oil	1

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Komatsu : Saa6d108e-2c-N8(S/N 19030-Up) : Engine : Fuel Injection Pump (Governor) (3/3) (For Regulation Of Epa) (Inner Parts)(#35434-)

ND***20	Washer? 1.0mm,Cover Plate	2
ND***20	Spring	1
ND***41	Plug	1
ND***10	Screw	1

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Komatsu : Saa6d108e-2c-N8(S/N 19030-Up) : Engine : Fuel Injection Pump (Pump) (1/2) (Inner Parts)(#22786-)

62***50	Injection Pump A	1
DK***30	Key,Woodruff	1
DK***00	Shim? 0.7mm	0
DK***00	Camshaft	1

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Komatsu : Saa6d108e-2c-N8(S/N 19030-Up) : Engine : Fuel Injection Pump (Pump) (2/2) (For Regulation Of Epa) (Inner Parts)(#35434-)

ND***90	Spring,Plunger	6
ND***91	Shim? 2.25mm,Element Holder	0
ND***11	Shim? 1.7mm	0
ND***51	Shim? 2.05mm,Element Holder	0

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Komatsu : Saa6d108e-2c-N8(S/N 19030-Up) : Engine : Fuel Injection Pump Drive (For Mechanical Governor)

01***22	Screw	4
01***35	Grub Screw	4
01***12	Nut	1
01***08	Nut,See Fig. K4010-04a0	4

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Komatsu : Saa6d108e-2c-N8(S/N 19030-Up) : Engine : Fuel Injection Pump Lubricator (For Mechanical Governor)

01***14	Bolt,(W/Joy Stick Str.)(W/O Heater)	1
01***35	Bolt, Cover	1
01***06	Nut	1
04***10	Clip - Fuel Sensor Harness	1

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Komatsu : Saa6d108e-2c-N8(S/N 19030-Up) : Engine : Fuel Injection Pump Mounting (For Regulation Of Epa)(#33518-)

01***20	Bolt, Hose Clamps (Inlet And Return Line Hoses)	2
01***08	Nut,R.H. Thread	1
01***11	Nut (Op)	1
01***32	Washer,(With Auto Emergency Steering)	1

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Komatsu : Saa6d108e-2c-N8(S/N 19030-Up) : Engine : Fuel Lift Pump (Fowearded Individually Parts)(#32486-)

67***11

Pump,Suction

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Komatsu : Saa6d108e-2c-N8(S/N 19030-Up) : Engine : Fuel Return

01***14	Bolt - Fuel Sensor Mounting	2
04***10	Clip,(For Mono Lever Steering)	3

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Komatsu : Saa6d108e-2c-N8(S/N 19030-Up) : Engine : Glow Plug(#21560-)

60***70	Glow Plug	6
62***10	Lead,Glow Plug	5

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Komatsu : Saa6d108e-2c-N8(S/N 19030-Up) : Engine : Idler Gear

01***80	Bolt	1
62***10	Shaft,Idler	1
62***20	Washer	1
62***00	Idler Gear Ass'Y	1

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Komatsu : Saa6d108e-2c-N8(S/N 19030-Up) : Engine : Injection Nozzle (For Regulation Of Epa)(#33518-)

01***40	Bolt,(Shim 3-Piece)	6
07***00	Clip	11
62***10	Carrier	6
62***30	Washer	6

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Komatsu : Saa6d108e-2c-N8(S/N 19030-Up) : Engine : Injection Piping (For Mechanical Governor)

01***25	Screw	6
61***30	Clip	1
62***90	Cover	6
62***30	Clip? With Thread	1

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Komatsu : Saa6d108e-2c-N8(S/N 19030-Up) : Engine : Muffler(#33518-)

61***91	Ring,Seal	1
62***90	Gasket,Exhaust	2
62***50	Band	1
62***60	Clamp	1

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Komatsu : Saa6d108e-2c-N8(S/N 19030-Up) : Engine : Name Plate And Caution (English) (For Regulation Pf Epa)(#33518-)

04***50	Screw	4
62***40	Plate? Name	1
62***50	Plate? Name	1

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Komatsu : Saa6d108e-2c-N8(S/N 19030-Up) : Engine : Oil Cooler (For Mechanical Governor)

01***20	Bolt,(Forwarded Individually Parts)	4
01***25	Bolt - Relay Mounting	4
01***30	Bolt,(Water Separator Spec.)	15
01***35	Bolt, Cover	1

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Komatsu : Saa6d108e-2c-N8(S/N 19030-Up) : Engine : Oil Filter

01***20	Bolt,(Forwarded Individually Parts)	3
01***30	Bolt,(Water Separator Spec.)	1
01***25	Bolt, Mount Engine Oil Drain To Fuel Tank	1
01***30	Bolt - Lower Oil Cooler Outlet Tubemounting	3

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Komatsu : Saa6d108e-2c-N8(S/N 19030-Up) : Engine : Oil Level Gauge(#27237-)

01***16	Bolt - Starting Motor Ground Cable	1
62***10	Gauge,Oil	1
62***10	Guide,Gauge	1

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Komatsu : Saa6d108e-2c-N8(S/N 19030-Up) : Engine : Oil Pan And Suction Tube(#27237-)

01***12	Bolt,(See Fig. K0210-16a0)	3
01***20	Bolt,(Forwarded Individually Parts)	39
01***25	Bolt - Relay Mounting	2
01***20	Bolt, Hose Clamps (Inlet And Return Line Hoses)	1

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Komatsu : Saa6d108e-2c-N8(S/N 19030-Up) : Engine : Oil Pump

01***20	Bolt,(Forwarded Individually Parts)	4
01***25	Bolt - Relay Mounting	1
01***40	Screw	1
01***60	Bolt, Mounting	1

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Komatsu : Saa6d108e-2c-N8(S/N 19030-Up) : Engine : Piston

02***13	Pin,Dowel	2
04***18	Ring,Snap (Itl)	12
62***00	Piston Ring Ass'Y	6
62***10	Piston Pin	6

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Komatsu : Saa6d108e-2c-N8(S/N 19030-Up) : Engine : Rear Hanger (For Regulation Of Epa)(#33518-)

01***20	Bolt, Hose Clamps (Inlet And Return Line Hoses)	4
62***30	Hanger,Rear	1
62***10	Hanger,Rear	1

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Komatsu : Saa6d108e-2c-N8(S/N 19030-Up) : Engine : Rocker Arm

01***75	Screw	8
61***30	Circlip	2
62***10	Rocker Socket	5
62***20	Rocker Socket	1

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Komatsu : Saa6d108e-2c-N8(S/N 19030-Up) : Engine : Starting Motor (11kw) (Inner Parts)(#27237-)

60***20	Starting Motor Ass'Y,(11kw)	1
SD***X0	Case,Gear	1
SD***X0	Bearing,Ball	1
SD***X0	Armature Ass'Y	1

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Komatsu : Saa6d108e-2c-N8(S/N 19030-Up) : Engine : Starting Motor Mounting (11kw)(#27237-)

01***40	Bolt (Kit)	3
62***10	Gasket,(See Fig.A6210)	1
(6***0)	Starting Motor Ass'Y,(11kw) (See Fig.A6210-B2b6)	1

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Komatsu : Saa6d108e-2c-N8(S/N 19030-Up) : Engine : Tension Pulley (Non Hardening Pulley)(#27237-)

01***65	Bolt	1
01***25	Bolt, Mount Engine Oil Drain To Fuel Tank	1
01***40	Bolt,(Shim 3-Piece)	1
01***45	Bolt, Bracket Mounting	1

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Komatsu : Saa6d108e-2c-N8(S/N 19030-Up) : Engine : Turbocharger Oil Piping (For Regulation Of Epa)(#33518-)

01***30	Bolt,(Water Separator Spec.)	2
01***20	Bolt, Hose Clamps (Inlet And Return Line Hoses)	3
01***25	Bolt, Mount Engine Oil Drain To Fuel Tank	5
01***08	Nut,See Fig. K4010-04a0	1

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Komatsu : Saa6d108e-2c-N8(S/N 19030-Up) : Engine : Water Drain Valve

07***35	Tube	1
61***12	Valve,Water Drain	1
61***12	Hose	1
61***10	Clip	1

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Komatsu : Saa6d108e-2c-N8(S/N 19030-Up) : Engine : Water Pump (With Non Hardening Pulley)(#27237-)

01***20	Bolt,(Forwarded Individually Parts)	1
01***50	Screw	2
01***20	Bolt, Hose Clamps (Inlet And Return Line Hoses)	2
01***25	Bolt, Mount Engine Oil Drain To Fuel Tank	2

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Frequently asked questions

What is the engine specification for the Komatsu SAA6D108E-2C-N8?

It is a 6-cylinder, 4-stroke, turbocharged, aftercooled diesel engine with an 8.3L displacement, producing 196 hp at 2050 rpm.

What is the operating weight of the machine equipped with this engine?

Operating weight varies by configuration and attachment, typically ranging from 73,000 to 73,200 lb for the PC300-6 series.

What replaced the Komatsu SAA6D108E-2C-N8 engine?

It was succeeded by engines in the PC300-7 and later dash-number generations, which feature updated emissions tiers and electronic control systems.

What SAA6D108E-2C-N8(S/N 19030-UP) owners discuss

What are the known powertrain and hydraulic behaviors for machines equipped with the SAA6D108E-2C-N8 engine?

The engine is a 6-cylinder, 4-stroke, turbocharged, aftercooled diesel with a displacement of 8.3 liters (507.1 cu in). It typically operates at 2050 rpm and delivers approximately 232 hp to 245 hp depending on the specific machine configuration. The hydraulic system relies on a main pump with a flow capacity of approximately 141.6 gal/min (33.8 l/min) and a system pressure rating of 5049.3 psi (348 bar). Owners note that the engine and hydraulic pump are closely linked; pump wear often precedes engine issues, and hydraulic weakness when hot usually indicates internal leakage in the pump, main control valve, or cylinders rather than just oil viscosity changes. All functions slowing simultaneously points to shared supply or engine performance issues, while single-function weakness points to circuit-specific components like load-holding valves or pilot controls.

What undercarriage and wear patterns are typical for this machine type?

Undercarriage components such as bushings, bearings, and track pads are subject to significant wear from continuous load and dust exposure. Worn bushings lead to noise and vibration, while worn bearings can cause premature track failure. Track tension must be monitored regularly; repeated loosening often indicates adjuster or component wear. Machines that pull to one side should be checked for mechanical resistance, track-chain condition, and roller status before diagnosing travel motors. The line is noted for wearing out complete machines simultaneously, meaning if one major hydraulic component fails, the engine or other drivetrain parts may be near end-of-life, impacting resale value.

What are the common engine quirks and maintenance requirements for the SAA6D108E-2 series?

The engine uses direct injection (Common Rail) and water cooling. Common issues include overheating during heavy excavation due to debris packed between heat exchangers (radiator, hydraulic oil cooler, charge-air cooler). Engine performance issues like power loss under load often stem from airflow restriction, injector wear, or failing fuel delivery components. Owners report that using non-OEM filters, such as certain aftermarket oil filters, can trigger false oil diversion warning lights that persist for 5-10 minutes. The engine requires specific Komatsu Engineering Standard lubricants, including Komatsu EO diesel engine oil and Komatsu TO hydraulic oil, to meet strict standards that exceed general industry specifications.

What are the common electrical and sensor issues reported by operators?

Komatsu excavators rely heavily on electronic control systems, meaning a single faulty sensor or unstable power supply can trigger multiple warning signals. Owners frequently report intermittent starting, dashboard failures, or random machine shutdowns. A slow or no-crank condition should be diagnosed by checking battery state of charge, terminals, engine/chassis grounds, and the main starter cable before assuming starter failure. Voltage collapse under load during starting is a key indicator of battery or ground issues. Multiple fault codes often point to battery health, ground connections, or connector integrity rather than individual component failure.

What should be checked when buying a used machine with the SAA6D108E-2C-N8 engine?

Verify the exact serial prefix and dash-number to confirm the specific engine variant and emissions tier, as specs vary by configuration. Check the engine oil diversion warning light operation, especially if aftermarket filters have been used. Inspect the cooling package for packed debris between the radiator, hydraulic oil cooler, and charge-air cooler. Test hydraulic performance both cold and hot to identify internal leakage that may only appear at operating temperature. Check for track tension, roller condition, and signs of mechanical binding. Verify the battery and ground connections, as unstable power can mimic component failures. Confirm the machine's history and ensure the correct parts book is available for gray market or older models.

What are the fluid specifications and capacities for this engine range?

The engine requires Komatsu EO diesel engine oil and Komatsu TO hydraulic oil. Coolant capacity varies by machine configuration but is typically around 30.3 liters (8 gallons) for the cooling system. The hydraulic system capacity is approximately 205.2 liters (54.2 gallons) for larger excavators in this class, with a hydraulic oil cooler capacity of 28.0 liters (7.4 gallons). The engine oil capacity is approximately 12.9 liters (3.4 gallons). Always consult the specific operation and maintenance manual for the exact machine serial range, as capacities vary by configuration.

What safety-critical fixes require dealer verification?

Safety-critical fixes involving the engine control system, hydraulic pressure regulation, and emissions aftertreatment components must be verified by your dealer. This includes any repairs related to the common rail fuel system, turbocharger actuation, or electronic control unit (ECU) diagnostics. Do not attempt to bypass safety interlocks or modify hydraulic relief pressures without official OEM documentation and dealer support.

Compiled from owner and technician discussions across the industry — experiences vary by serial range and machine history.

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