Komatsu H135S-1(S/N G61033)
Maintenance schedule, common problems & OEM parts breakdown
The Komatsu H135S-1 is a heavy hydraulic shovel designed for large-scale mining and major earthmoving applications. Production years for this series span the late 1990s through the early 2000s, serving as the successor to the H135S and the predecessor to the H135S-2. The machine class is defined by its massive operating weight, which varies by configuration and series between 308,647 lb (140,000 kg) and 308,647 lb (140,000 kg). Configurations offered include varying boom and stick lengths, such as a 26 ft 315 in (8000 mm) boom with an 11 ft 142 in (3600 mm) stick, and a 39 ft 472 in (12000 mm) boom with an 11 ft 142 in (3600 mm) stick. The H135S-1 is engineered for high-durability service in extreme conditions, featuring a robust undercarriage and chassis built to withstand the stresses of continuous heavy digging.
Across the H135S series generations, Komatsu refined hydraulic system efficiency and undercarriage durability to extend service life in abrasive mining environments. The H135S-1 matters in the used and parts market today because its specific serial range, including S/N G61033, represents a mature platform where genuine replacement parts remain critical for maintaining operational integrity. As these machines age, the availability of accurate maintenance data and specific component replacements for the powertrain, hydraulic pumps, and slew gears becomes essential. The H135S-1's design allows for extensive rebuild capabilities, making it a viable asset for fleets seeking to extend equipment life through comprehensive overhaul rather than immediate replacement.
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 H135S-1(S/N G61033) specifications
Engine
| Model | VTA28-C-800 |
| Number of Cylinders | 12 |
| Displacement | 1708.7 cu in (28.0 L) |
| Gross Power | 728.2 hp (543 kW) |
| Net Power | 728 hp (543 kW) |
| Power Measured @ | 1800 rpm |
| Aspiration | Turbocharged |
Weights
| Operating Weight | the OEM part reference.2 lb (0.9 kg) |
| Ground Pressure | 29.3 psi (202 kPa) |
Dimensions
| Width Over Tracks | 16.77 ft (5.11 m) |
| Length of Track on Ground | 16.02 ft (4.88 m) |
| Track Gauge | 13.95 ft (4.25 m) |
| Ground Clearance | 2.55 ft (0.78 m) |
| Height to Top of Cab | 20.45 ft (6.23 m) |
| Tail Swing Radius | 16.21 ft (4.94 m) |
| Shoe Size | 23.63 in (600 mm) |
Performance
| Max Travel Speed | 1.5 mph (2.4 km/h) |
| Swing Speed | 6.2 rpm |
| Hydraulic Pump Flow Capacity | 435.9 gal/min (1650 L/min) |
| Hydraulic System Relief Valve Pressure | 4495 psi (31 MPa) |
Service capacities (summary)
| Fuel Capacity | 475.6 gal (1800 L) |
| Hydraulic System Fluid Capacity | 425.4 gal (1610 L) |
Values vary by configuration, region, and serial range — confirm against your machine before planning transport or lifts.
Komatsu H135S-1(S/N G61033) maintenance schedule
| Service interval | Tasks |
|---|---|
| Every 10 h |
|
| Every 250 h |
|
| Every 500 h |
|
| Every 1,000 h |
|
| Every 2,000 h |
|
Servicing the H135S-1(S/N G61033) beyond the schedule
Predictive Maintenance & Fluid Analysis
Utilize KOWA fluid analysis at every 500-hour interval to monitor wear metals in the hydraulic system and engine oil. Check hydraulic oil particle count and viscosity to detect pump or valve wear early. Inspect coolant pH and SCA concentration to prevent scaling in the engine block. Monitor DEF levels daily to ensure Tier 4 compliance and prevent engine derating. Track KOMTRAX telematics data for load frequency and fault codes to anticipate component failures before they cause downtime.
Corrective & Common Repairs
Address hydraulic hose leaks and cracks during daily inspections to prevent fluid loss and fire hazards. Replace worn track shoes and idlers when undercarriage wear measurements exceed limits to maintain proper track tension. Inspect the slew-brake valve for pilot oil leaks that cause swing drift. Check the turbocharger for shaft play or oil leaks. Replace the hydraulic return filter if pressure differential indicators show clogging. Repair cracked boom or stick welds during the 1000-hour structural inspection.
Overhaul & Rebuild Points
Plan major overhauls for the hydraulic pump and swing machinery at the 2000-hour milestone. Replace final drive oil and inspect gears for pitting or wear. Rebuild the engine with new piston rings and valve seals if compression drops or oil consumption increases. Inspect the undercarriage for excessive wear on sprockets, rollers, and track chains. Replace all hydraulic hoses and seals during the comprehensive component evaluation. Check the swing circle for backlash or wear that affects stability.
Seasonal & Environment Servicing
Install the hot-water-heater in cold climates to ensure engine startability and reduce wear. Check the air filter restriction indicator frequently in dusty mining environments to prevent engine damage. Drain water from the fuel separator more often in humid conditions to prevent fuel line freezing. Inspect the radiator and oil cooler fins for debris buildup to maintain cooling efficiency. Use Komatsu Genuine Lubricants formulated for the operating temperature range. Verify ROPS/FOPS integrity and tighten all bolts after heavy vibration exposure.
H135S-1(S/N G61033) common service parts
| Part number | Part | Notes | |
|---|---|---|---|
| 4N5 823 | Fuel Filter Cartridge | Fuel system service | Check fitment → |
| 2P4 005 | Oil Filter Cartridge | Lubrication service | Check fitment → |
| 414 024 40 | Return Oil Filter (H65, H135) (H65, H135) A = 375 | Lubrication service | Check fitment → |
| 691 865 | Filter Insert (Paper) - Return Oil Filter - Leakage | Lubrication service | Check fitment → |
| 358 601 40 | Return Oil Filter, Assembly | Lubrication service | Check fitment → |
Always confirm against your machine's serial number — cross-check any part in Heavy Parts AI before ordering.
H135S-1(S/N G61033) fault codes & troubleshooting
| Code | Meaning | Likely cause | What to do |
|---|---|---|---|
| CA115 | Engine crankshaft speed sensor failure | Broken sensor, wiring issue, or connector corrosion | Replace the speed sensor and verify the voltage at the pin connector |
| CA441 | Battery voltage too low | Weak battery or charging system failure | Replace the battery or alternator and check the voltage regulator |
| CA442 | Battery voltage too high | Faulty voltage regulator or alternator | Replace the alternator or battery and check the voltage regulator |
| CA122 | Intake air pressure sensor high voltage | Sensor malfunction or wiring short | Verify the intake pressure sensor and wiring |
| CA123 | Intake air pressure sensor low voltage | Sensor short or airflow restriction | Check for a sensor short or an airflow restriction |
| CA153 | Intake air temperature sensor high voltage | Sensor malfunction | Replace or test the IAT sensor |
| CA154 | Intake air temperature sensor low voltage | Sensor malfunction | Replace or test the IAT sensor |
| CA234 | Engine overspeed | Throttle calibration error, engine load cycle issue, or operator misuse | Verify throttle calibration, engine load cycle, or operator misuse |
| CA451 | Common rail pressure sensor feedback value too high | Fuel rail sensor malfunction or actual overpressure condition | Diagnose the fuel rail pressure sensor or pump lines |
| CA452 | Common rail pressure sensor feedback value too low | Fuel rail sensor malfunction or low pressure condition | Diagnose the fuel rail pressure sensor or pump lines |
Codes and remedies are general guidance for this model family — always confirm with diagnostic tooling and your dealer before major repairs.
H135S-1(S/N G61033) attachments & work tools
Standard Digging Bucket
Typical capacity for this class ranges from 10 to 14 cubic yards (7.6 to 10.7 cubic meters). Factory configurations often pair the machine with a 39'472 " (12000 mm) boom and varying stick lengths to optimize reach and depth.
Heavy Duty / Rock Bucket
Designed for high-abrasion applications with reinforced side cutters and bottom plates. Capacity varies by configuration/series but generally aligns with the standard bucket range, prioritizing durability over volume.
Long Reach / High Dump Configurations
Available with boom/stick options including a 39'472 " (12000 mm) boom paired with sticks of 11'142 " (3600 mm), 16'197 " (5000 mm), or 23'276 " (7000 mm). These setups increase max digging depth to 47.91 ft (14.6 m) and max reach to 68.25 ft (20.8 m).
Coupler / Quick Attach System
The H135S-1 utilizes a fixed-pin or hydraulic quick-coupler mounting interface compatible with standard excavator bucket pins. Specific coupler models vary by dealer and aftermarket supplier; verify pin diameter and cylinder spacing with your local Komatsu dealer.
Hydraulic Circuit Requirements
Tools requiring auxiliary hydraulics (e.g., breakers, grapples) must utilize the machine's main relief valve pressure of 4495 psi (31 MPa). The hydraulic pump flow capacity of 435.9 gal/min (1650 L/min) supports high-flow tool operations.
Engine & Powertrain Compatibility
The H135S-1(S/N G61033) is powered by a Komatsu VTA28-C-800 diesel engine with 12 cylinders and 728.2 hp (543 kW) gross power. Work tools must be matched to this power output to avoid underperformance or excessive fuel consumption.
Guarding & Protection Options
Factory options include side cutters, bottom plates, and wear strips for buckets. The machine's 29.3 psi (202 kPa) ground pressure and 16.77 ft (5.1 m) track width provide stability for heavy tool attachments.
All H135S-1(S/N G61033) assemblies by section
Every catalogued assembly group for the Komatsu H135S-1(S/N G61033). Open an assembly to preview the parts inside — full OEM part numbers are available in Heavy Parts AI.
* = Variations From Page:
Komatsu : H135s-1(S/N G61033) : * = Variations From Page : : 24v/91f 24b 111 7817
Komatsu : H135s-1(S/N G61033) : * = Variations From Page : : Generator 100a/30s1
| 2P***05 | Oil Filter Cartridge | 2 |
| 2W***87 | Pressure Gauge, Fuel | 1 |
| 3T***67 | Starter | 1 |
Komatsu : H135s-1(S/N G61033) : * = Variations From Page : : Grease
| 00***98 | Locking Spring | 1 |
| 26***40 | Pressure Gauge | 1 |
| 30***99 | Bolt | 4 |
Komatsu : H135s-1(S/N G61033) : * = Variations From Page : : Operator'S Cab Item 01
| 05***40 | Grommet | 2 |
| 05***40 | Socket | 2 |
| 05***40 | Bulb 10 W | 4 |
Annex
Komatsu : H135s-1(S/N G61033) : Annex : Colour : Chrome Yellow
Komatsu : H135s-1(S/N G61033) : Annex : Electric Schematic
Komatsu : H135s-1(S/N G61033) : Annex : Hydraulic Schematic
Komatsu : H135s-1(S/N G61033) : Annex : Tools And Accessories
Backhoe Equipment
Komatsu : H135s-1(S/N G61033) : Backhoe Equipment
Komatsu : H135s-1(S/N G61033) : Backhoe Equipment : Backhoe 7,5 M?
| 41***40 | Tooth Adapter | 3 |
| 41***40 | Corner Adapter | 1 |
| 41***40 | Corner Adapter | 1 |
Komatsu : H135s-1(S/N G61033) : Backhoe Equipment : Backhoe 8,5 M?
| 41***40 | Tooth Adapter | 3 |
| 41***40 | Corner Adapter | 1 |
| 41***40 | Corner Adapter | 1 |
Komatsu : H135s-1(S/N G61033) : Backhoe Equipment : Boom 8,0 M
| 00***98 | Mounting Clip | 4 |
| 00***98 | Mounting Clip | 2 |
| 00***98 | Grease Nipple | 8 |
Komatsu : H135s-1(S/N G61033) : Backhoe Equipment : Boom Cylinder With Adapters R.H. And L.H.
| 00***98 | O-Ring | 1 |
| 31***99 | Socket Head Cap Screw | 8 |
| 36***99 | O-Ring | 1 |
Komatsu : H135s-1(S/N G61033) : Backhoe Equipment : Hydr. Cylinder
| 00***98 | Grease Nipple | 3 |
| 00***98 | O-Ring | 1 |
| 20***40 | Sealing Element | 1 |
Komatsu : H135s-1(S/N G61033) : Backhoe Equipment : Pipes Bucket Cylinder
| 00***98 | O-Ring | 1 |
| 26***40 | Connecting Block | 1 |
| 30***99 | Bolt | 4 |
Komatsu : H135s-1(S/N G61033) : Backhoe Equipment : Pipes Stick Cylinder
| 00***98 | O-Ring | 1 |
| 00***98 | O-Ring | 2 |
| 11***40 | Pipe Bracket | 1 |
Komatsu : H135s-1(S/N G61033) : Backhoe Equipment : Stick 3,6 M
| 00***98 | Mounting Clip | 3 |
| 00***98 | Mounting Clip | 3 |
| 00***98 | Clamp | 1 |
Komatsu : H135s-1(S/N G61033) : Backhoe Equipment : Wishbone And Rod
| 00***98 | Grease Nipple | 5 |
| 21***40 | Bolt Lock | 2 |
| 26***40 | Stripper | 6 |
Drive
Komatsu : H135s-1(S/N G61033) : Drive
Komatsu : H135s-1(S/N G61033) : Drive : -Air Cleaner
| 30***99 | Bolt | 20 |
| 30***99 | Lock Washer | 22 |
| 33***99 | Nut | 22 |
Komatsu : H135s-1(S/N G61033) : Drive : -Coupling
| 30***99 | Screw | 2 |
| 34***99 | Dowel Sleeve | 32 |
| 50***98 | Bolt | 32 |
Komatsu : H135s-1(S/N G61033) : Drive : -Engine
| 2P***05 | Oil Filter Cartridge | 2 |
| 2W***87 | Pressure Gauge, Fuel | 1 |
| 3T***67 | Starter | 1 |
Komatsu : H135s-1(S/N G61033) : Drive : -Fan Pump
Komatsu : H135s-1(S/N G61033) : Drive : -Main Pump
| 00***98 | O-Ring | 1 |
| 00***98 | O-Ring | 2 |
| 17***40 | Plug | 2 |
Komatsu : H135s-1(S/N G61033) : Drive : -Pump Distributor Gear
| 00***98 | O-Ring | 1 |
| 00***98 | O-Ring | 4 |
| 08***54 | O-Ring | 2 |
Komatsu : H135s-1(S/N G61033) : Drive : -Radiator
| 00***98 | Clamp | 2 |
| 30***99 | Screw | 20 |
| 31***99 | Plug | 6 |
Komatsu : H135s-1(S/N G61033) : Drive : Air Cleaning System, Cat
| 00***99 | Bolt | 6 |
| 00***98 | Hose Clip | 6 |
| 14***40 | Maintenance Switch | 2 |
Komatsu : H135s-1(S/N G61033) : Drive : Drive, Cat
| 00***98 | Hose Clamp | 2 |
| 00***98 | Bolt | 16 |
| 14***40 | Dust Cap | 1 |
Komatsu : H135s-1(S/N G61033) : Drive : Engine : Caterpillar
Komatsu : H135s-1(S/N G61033) : Drive : Exhaust System, Cat
| 21***40 | Muffler | 1 |
| 23***40 | Half Clamp | 2 |
| 23***40 | Half Clamp | 2 |
Komatsu : H135s-1(S/N G61033) : Drive : Fan Mounting - Radiator
| 00***98 | Union | 2 |
| 30***40 | Disc | 2 |
| 30***99 | Bolt 25 mm Lg | 4 |
Komatsu : H135s-1(S/N G61033) : Drive : Fuel Lines, Cat
| 23***40 | Ball Cock | 1 |
| 25***40 | Hose Dn 12 X Ca. 4000 Lg. Bulk Ware, State Length Required | 1 |
| 25***40 | Hose Fittings | 1 |
Komatsu : H135s-1(S/N G61033) : Drive : Lines For Radiator, Cat
| 00***98 | Clamp | 4 |
| 00***98 | Clamp | 4 |
| 00***98 | Clamp | 4 |
Komatsu : H135s-1(S/N G61033) : Drive : Output :
Komatsu : H135s-1(S/N G61033) : Drive : Pump And Distributor Gear Arrangement
| 00***98 | Union | 1 |
| 26***40 | Hose Fittings | 2 |
| 30***99 | Bolt | 12 |
Komatsu : H135s-1(S/N G61033) : Drive : Radiator Arr.
| 00***98 | Union | 2 |
| 08***80 | Hinge Pin | 4 |
| 12***40 | Base | 1 |
Komatsu : H135s-1(S/N G61033) : Drive : Serial-No. :
Komatsu : H135s-1(S/N G61033) : Drive : Series :
Komatsu : H135s-1(S/N G61033) : Drive : Speed Control
| 00***98 | Union | 1 |
| 18***40 | Connection Plate | 1 |
| 21***99 | Pipe ? 12 Ca 300mm Bulk Ware, State Length Required | 0 |
Komatsu : H135s-1(S/N G61033) : Drive : Suction Lines
| 00***98 | O-Ring | 1 |
| 26***40 | Hose Fittings | 6 |
| 30***99 | Bolt 35 Lg | 12 |
Electric
Komatsu : H135s-1(S/N G61033) : Electric : Batteries With Cables
| 00***98 | Pipe Clamp, Rubber Armed | 8 |
| 14***40 | Cable Shoe | 8 |
| 30***99 | Screw | 4 |
Komatsu : H135s-1(S/N G61033) : Electric : Cables - Cab Support
| 05***15 | Cable Protection Hose Ca. 4000 mm Bulk Ware, State Length Required | 6 |
| 32***40 | Cable Union Pg 21 | 3 |
| 35***40 | Cable Protection Hose Pg 16 Bulk Ware, State Length Required | 0 |
Komatsu : H135s-1(S/N G61033) : Electric : Cables - Oil Tank And Control Frame
| 00***98 | Clamp 22/15 | 10 |
| 05***40 | Cable Lug, Red | 15 |
| 05***15 | Cable Protection Hose Ca. 4000 mm Bulk Ware, State Length Required | 17 |
Komatsu : H135s-1(S/N G61033) : Electric : Cables Superstructure
| 00***98 | Clamp 15/15 | 5 |
| 00***98 | Clamp 18/15 | 20 |
| 05***40 | Cable Lug, Red | 15 |
Komatsu : H135s-1(S/N G61033) : Electric : Electric Equipment
| 25***40 | Housing, Empty | 2 |
Komatsu : H135s-1(S/N G61033) : Electric : Horn, Illumination
| 25***40 | Compressor-Single Ton-Horn Consist. Of Fig.-No: 03-05 | 1 |
| 27***40 | Compressor-Two Ton-Horn Consist. Of Fig.-No: 05-08 | 1 |
| 30***99 | Bolt 20 mm Lg | 4 |
Komatsu : H135s-1(S/N G61033) : Electric : Junction Box On Oil Tank
| 05***40 | Pull Switch | 1 |
| 25***40 | Housing, Empty | 1 |
| 32***99 | Screw | 6 |
Komatsu : H135s-1(S/N G61033) : Electric : Main Switch Box In Cabin Support
| 05***40 | Pull Switch | 1 |
| 05***40 | Flanged Socket | 1 |
| 05***40 | Ground Wire - Series Terminal | 20 |
Komatsu : H135s-1(S/N G61033) : Electric : Operation Panel
| 14***40 | Disc | 8 |
| 27***40 | Connector Socket | 1 |
| 30***40 | Cover | 1 |
Komatsu : H135s-1(S/N G61033) : Electric : Standard Lighting Equipment
| 00***98 | Clamp 15/15 | 30 |
| 05***40 | Plug To Fig-No: 17 | 5 |
| 05***40 | Socket | 3 |
Komatsu : H135s-1(S/N G61033) : Electric : Switch Box - Engine
| 05***40 | Cable Union | 1 |
| 05***40 | Ground Wire - Series Terminal | 8 |
| 26***40 | Retainer | 2 |
Komatsu : H135s-1(S/N G61033) : Electric : Wire Layout - Engine, Cat
| 05***40 | Cable Lug, Red | 15 |
| 35***40 | Cable Protection Hose Pg 9x***00 Lg. Bulk Ware, State Length Required | 0 |
| 35***40 | Cable Protection Hose Pg 21 Pg 21x1400 Lg. Bulk Ware, State Length Required | 2 |
General View
Komatsu : H135s-1(S/N G61033) : General View : General View Backhoe Equipment
Komatsu : H135s-1(S/N G61033) : General View : General View Drive
Komatsu : H135s-1(S/N G61033) : General View : General View Electric
Komatsu : H135s-1(S/N G61033) : General View : General View Hydraulic
Komatsu : H135s-1(S/N G61033) : General View : General View Lubrication- And Refueling Equipment
Komatsu : H135s-1(S/N G61033) : General View : General View Operator'S Cab
Komatsu : H135s-1(S/N G61033) : General View : General View Shovel
Komatsu : H135s-1(S/N G61033) : General View : General View Superstructure
Komatsu : H135s-1(S/N G61033) : General View : General View Undercarriage
Komatsu : H135s-1(S/N G61033) : General View : Machine-Maintenance Parts, Cat
| 25***40 | O-Ring, H.P. Element Lubrication + Cooling | 3 |
| 26***40 | Air Cleaner, Cabin Supercharger | 1 |
| 2P***05 | Oil Filter Cartridge | 2 |
Komatsu : H135s-1(S/N G61033) : General View : Painting/Decals/Stop Pads
| 00***98 | Plate, German | 1 |
| 24***40 | Decal Set | 1 |
| 34***40 | Decal Set H 135 | 2 |
Heater And Air Condit. Equipment
Komatsu : H135s-1(S/N G61033) : Heater And Air Condit. Equipment : -Air Conditioning Unit
| 31***99 | Screw | 3 |
| 34***99 | Lock Washer | 3 |
| 46***40 | Air Conditioning Unit Assembly | 1 |
Komatsu : H135s-1(S/N G61033) : Heater And Air Condit. Equipment : -Compressor
Komatsu : H135s-1(S/N G61033) : Heater And Air Condit. Equipment : -Coupling
Komatsu : H135s-1(S/N G61033) : Heater And Air Condit. Equipment : -H.P. Filter
| 25***40 | O-Ring, H.P. Element Lubrication + Cooling | 1 |
| 31***99 | Screw | 4 |
| 34***99 | Lock Washer | 4 |
Komatsu : H135s-1(S/N G61033) : Heater And Air Condit. Equipment : -Heater Assembly
| 46***40 | Heat Exchanger | 1 |
| 51***40 | Heater Consist. Of Fig-Nos: 02-08 | 1 |
| 69***73 | Tab 4-Pole | 1 |
Komatsu : H135s-1(S/N G61033) : Heater And Air Condit. Equipment : Air Conditioning Lines
| 23***40 | Hose Nw 10x Ca. 6000 mm Bulk Ware, State Length Required | 1 |
| 25***40 | Hose Fittings | 2 |
| 25***40 | Hose Fittings | 2 |
Komatsu : H135s-1(S/N G61033) : Heater And Air Condit. Equipment : Compressor Drive, Air Condit.
Komatsu : H135s-1(S/N G61033) : Heater And Air Condit. Equipment : Hot-Water-Heater, Cat
| 25***40 | Hose Dn 12 X Ca. 4000 Lg. Bulk Ware, State Length Required | 2 |
| 25***40 | Breather Up To 06 122 | 2 |
| 25***40 | Hose Fittings, Straight | 1 |
Komatsu : H135s-1(S/N G61033) : Heater And Air Condit. Equipment : Hydr. For Air Conditioning Equipment
| 00***98 | Union | 1 |
| 00***98 | Union | 1 |
| 15***40 | Test - Screw Coupling | 1 |
Hydraulic
Komatsu : H135s-1(S/N G61033) : Hydraulic
Komatsu : H135s-1(S/N G61033) : Hydraulic : --Pressure Sequence Stage
| 10***65 | O-Ring | 1 |
| 49***40 | Pressure Sequence Stage Assembly | 1 |
| 50***98 | O-Ring | 1 |
Komatsu : H135s-1(S/N G61033) : Hydraulic : -Anticavitation Valve
| 25***40 | Anticavitation Valve Assembly. Ng 20 | 1 |
| 36***99 | O-Ring | 2 |
| 50***98 | O-Ring | 1 |
Komatsu : H135s-1(S/N G61033) : Hydraulic : -Bleed-Off Valve
| 00***98 | O-Ring | 2 |
| 32***40 | Valve, Pre-Controlled Assembly. 125 Bar | 0 |
| 35***40 | Pressure Valve For Bullclam Bucket Equipment | 0 |
Komatsu : H135s-1(S/N G61033) : Hydraulic : -Control Blocks
| 00***98 | O-Ring | 20 |
| 16***40 | Release Valve | 6 |
| 31***99 | Eye Bolt | 2 |
Komatsu : H135s-1(S/N G61033) : Hydraulic : -H.P. Filter
| 31***99 | Screw | 4 |
| 34***99 | Lock Washer | 4 |
| 34***40 | Gasket | 1 |
Komatsu : H135s-1(S/N G61033) : Hydraulic : -H.P. Filter For Fan, Lube- And Pilot Oil
| 25***40 | O-Ring, H.P. Element Lubrication + Cooling | 1 |
| 31***99 | Screw | 4 |
| 34***99 | Lock Washer | 4 |
Komatsu : H135s-1(S/N G61033) : Hydraulic : -H.P. Filter For Gear Oil
| 25***40 | O-Ring, H.P. Element Lubrication + Cooling | 1 |
| 31***99 | Screw | 4 |
| 34***99 | Lock Washer | 4 |
Komatsu : H135s-1(S/N G61033) : Hydraulic : -Load Limitation Valve
| 17***40 | Plug | 3 |
| 33***99 | Nut | 1 |
| 36***40 | Load Limitation Valve Assembly. For H 121 (All Diesel Engines) | 1 |
Komatsu : H135s-1(S/N G61033) : Hydraulic : -Pressure Relief Valve
| 00***98 | O-Ring | 1 |
| 31***99 | Screw | 4 |
| 44***40 | Directional Spool Valve Assembly. With Fig-Nos: 09-14 | 1 |
Komatsu : H135s-1(S/N G61033) : Hydraulic : -Slew-Brake Valve
| 00***98 | O-Ring | 2 |
| 31***99 | Bolt | 4 |
| 46***40 | Brake Valve Assembly | 1 |
Komatsu : H135s-1(S/N G61033) : Hydraulic : -Throttle Check Valve
| 00***98 | O-Ring | 2 |
| 18***40 | O-Ring | 1 |
| 31***99 | Bolt | 4 |
Komatsu : H135s-1(S/N G61033) : Hydraulic : Add. Parts Backhoe Control
| 21***99 | Pipe ? 12 Ca 300mm Bulk Ware, State Length Required | 0 |
| 25***40 | Hose Dn 8 X Ca. 2000 Lg. Bulk Ware, State Length Required | 0 |
| 25***40 | Hose Fittings | 12 |
Komatsu : H135s-1(S/N G61033) : Hydraulic : Control And Fuel Lines - Control Blocks
| 00***98 | Union | 5 |
| 00***98 | Union | 3 |
| 00***98 | Union | 1 |
Komatsu : H135s-1(S/N G61033) : Hydraulic : Control Blocks - Oil Tank - Pumps
| 00***98 | Half Flange | 12 |
| 00***98 | Half Flange | 12 |
| 00***98 | Flange Seal | 6 |
Komatsu : H135s-1(S/N G61033) : Hydraulic : Control Blocks - Slew Gear
| 00***98 | Half Flanged | 4 |
| 00***98 | Half Flange | 4 |
| 00***98 | Union | 1 |
Komatsu : H135s-1(S/N G61033) : Hydraulic : Control Clamshell And Drive
| 00***98 | Union | 4 |
| 25***40 | Hose Fittings | 0 |
| 26***40 | Hose Nw 10x Ca. 8000 mm Bulk Ware, State Length Required | 0 |
Komatsu : H135s-1(S/N G61033) : Hydraulic : Filter And Valve Arrangement
| 08***40 | Pressure Relief Valve (10 Bar) | 1 |
| 15***40 | Test - Screw Coupling | 1 |
| 17***40 | Union | 1 |
Komatsu : H135s-1(S/N G61033) : Hydraulic : Hydr. Oil Cooler
| 00***98 | Test Socket | 1 |
| 00***98 | Half Flange | 2 |
| 00***98 | O-Ring | 1 |
Komatsu : H135s-1(S/N G61033) : Hydraulic : Hydraulic Control
| 00***98 | Socket | 1 |
| 00***98 | Union | 1 |
| 12***40 | Retainer | 1 |
Komatsu : H135s-1(S/N G61033) : Hydraulic : Lines - Control Blocks - Rotary Joint
| 00***98 | Half Flange | 8 |
| 00***98 | Union | 1 |
| 17***40 | Plug | 1 |
Komatsu : H135s-1(S/N G61033) : Hydraulic : Lines - Manifold - Basic Boom
| 00***98 | Half Flanged | 12 |
| 30***99 | Bolt | 24 |
| 31***99 | Screw | 48 |
Komatsu : H135s-1(S/N G61033) : Hydraulic : Manifold - Control Blocks And H.P. Filter
| 15***40 | Test - Screw Coupling | 9 |
| 30***99 | Bolt (Standard) | 4 |
| 30***99 | Bolt | 6 |
Komatsu : H135s-1(S/N G61033) : Hydraulic : Pilot Oil Units L.H., R.H. And L.H. Rear Euro
| 00***98 | Union | 12 |
| 25***40 | Hose Fittings | 12 |
| 25***40 | Hose Fittings | 0 |
Komatsu : H135s-1(S/N G61033) : Hydraulic : Piping - Control Blocks - Manifold
| 31***99 | Bolt (Standard) | 96 |
| 31***99 | Bolt | 32 |
| 35***40 | Flange Seal | 24 |
Komatsu : H135s-1(S/N G61033) : Hydraulic : Pump Bearing Lubrication With Expansion Tank
| 25***40 | Hose Dn 12 X Ca. 4000 Lg. Bulk Ware, State Length Required | 1 |
| 25***40 | Screwed Fittings | 1 |
| 26***40 | Hose Fittings | 1 |
Komatsu : H135s-1(S/N G61033) : Hydraulic : Pump Lube And Regulating Equipment
| 00***98 | Test Union | 1 |
| 00***98 | Union | 1 |
| 00***98 | Socket | 1 |
Komatsu : H135s-1(S/N G61033) : Hydraulic : Throttle Check Valve
| 08***40 | O-Ring | 1 |
| 17***40 | Screw Plug | 1 |
| 25***40 | Valve Disk | 1 |
Komatsu : H135s-1(S/N G61033) : Hydraulic : Transmission - Oil Cooler
| 00***98 | Socket | 1 |
| 00***98 | Union | 1 |
| 08***40 | Pressure Relief Valve (10 Bar) | 1 |
Lubrication- And Refueling Equipment
Komatsu : H135s-1(S/N G61033) : Lubrication- And Refueling Equipment : -Lube Pump Station
| 21***99 | Pipe ? 10 Bulk Ware, State Length Required | 0 |
| 37***99 | Union | 1 |
| 55***40 | Lube Pump Station Consist. Of Fig-Nos: 02-39 | 1 |
Komatsu : H135s-1(S/N G61033) : Lubrication- And Refueling Equipment : -Metering Valve
| 26***40 | Metering Valve, Assembly | 1 |
| 69***02 | Nipple | 1 |
| 69***03 | Adjusting Screw | 1 |
Komatsu : H135s-1(S/N G61033) : Lubrication- And Refueling Equipment : -Pump
| 00***98 | O-Ring To Fig-Nos. 61,62 | 2 |
| 69***14 | Pin | 1 |
| 69***16 | Bush With Thread | 1 |
Komatsu : H135s-1(S/N G61033) : Lubrication- And Refueling Equipment : Electric Arr. Superstructure
| 04***40 | Dust Cap | 1 |
| 05***40 | Cable Protection Hose Pg 7 Bulk Ware, State Length Required | 0 |
| 05***40 | Socket | 1 |
Komatsu : H135s-1(S/N G61033) : Lubrication- And Refueling Equipment : Electric Parts Central Lubr. Backhoe Equipment
| 04***40 | Dust Cap | 2 |
| 04***40 | Plug | 3 |
| 14***40 | Socket | 2 |
Komatsu : H135s-1(S/N G61033) : Lubrication- And Refueling Equipment : Hydr. For Grease (1-L)
| 21***99 | Pipe ? 12 Ca 300mm Bulk Ware, State Length Required | 0 |
| 25***40 | Hose Dn 12 X Ca. 4000 Lg. Bulk Ware, State Length Required | 0 |
| 26***40 | Hose Fittings | 2 |
Komatsu : H135s-1(S/N G61033) : Lubrication- And Refueling Equipment : Lube Distributor Slew Ring
| 16***40 | Hose Assembly. Nw 20x3300 mm | 1 |
| 21***99 | Pipe ? 12 Ca 300mm Bulk Ware, State Length Required | 0 |
| 21***99 | Pipe, Assembly. ? 25 Bulk Ware, State Length Required | 0 |
Komatsu : H135s-1(S/N G61033) : Lubrication- And Refueling Equipment : Lube Lines
| 21***99 | Pipe ? 12 Ca 300mm Bulk Ware, State Length Required | 0 |
| 21***99 | Pipe ? 10x1000 Lg. Bulk Ware, State Length Required | 0 |
| 30***99 | Screw | 1 |
Komatsu : H135s-1(S/N G61033) : Lubrication- And Refueling Equipment : Lube Lines - Boom - Backhoe Equipment
| 00***98 | Mounting Clip | 1 |
| 00***98 | Mounting Clip | 1 |
| 00***98 | Union | 4 |
Komatsu : H135s-1(S/N G61033) : Lubrication- And Refueling Equipment : Lube Lines - Stick - Backhoe Equipment
| 21***99 | Pipe ? 10x270 Lg. Bulk Ware, State Length Required | 0 |
| 21***99 | Pipe ? 16x50 Lg. Bulk Ware, State Length Required | 4 |
| 30***99 | Bolt | 4 |
Komatsu : H135s-1(S/N G61033) : Lubrication- And Refueling Equipment : Lube Pump Station Arr.
| 00***98 | Locking Spring | 1 |
| 21***99 | Pipe, Assembly. ? 25 Bulk Ware, State Length Required | 0 |
| 30***99 | Bolt | 4 |
Komatsu : H135s-1(S/N G61033) : Lubrication- And Refueling Equipment : Lube Station Arr.
| 00***98 | Locking Spring | 1 |
| 26***40 | Pressure Gauge | 1 |
| 30***99 | Bolt | 4 |
Operator'S Cab
Komatsu : H135s-1(S/N G61033) : Operator'S Cab : -Sliding Window
| 32***40 | Sliding Window Assembly, L.H | 1 |
| 35***40 | Sliding Window Assembly, R.H | 1 |
| 51***98 | Screw | 16 |
Komatsu : H135s-1(S/N G61033) : Operator'S Cab : Aux. Cab Parts
| 08***40 | Mirror | 2 |
| 11***40 | Mirror Bracket, R.H | 1 |
| 16***40 | Buffer | 1 |
Komatsu : H135s-1(S/N G61033) : Operator'S Cab : Boom, Stick, Slew Gear
| 34***99 | Pin | 2 |
| 41***40 | Pilot Oil Unit Assembly | 1 |
| 50***98 | O-Ring | 1 |
Komatsu : H135s-1(S/N G61033) : Operator'S Cab : Bullclam Bucket
| 51***40 | Pilot Oil Unit Consist. Of Fig-Nos: 02-37 | 1 |
| 69***73 | Housing Consist. Of Fig-Nos: 03-10 | 1 |
| 69***73 | Housing | 1 |
Komatsu : H135s-1(S/N G61033) : Operator'S Cab : Cab Support And Protection Roof
| 08***40 | Lock Assembly | 1 |
| 08***40 | Handle | 1 |
| 16***40 | Profiled Joint 4400 Lg. Bulk Ware, State Length Required | 0 |
Komatsu : H135s-1(S/N G61033) : Operator'S Cab : Colour : Light Grey
Komatsu : H135s-1(S/N G61033) : Operator'S Cab : Cover
| 16***40 | Flex. Header Ca. 350 Lg. Bulk Ware, State Length Required | 0 |
| 16***40 | Flex. Header Ca. 1300 Lg. Bulk Ware, State Length Required | 0 |
| 19***40 | Shackle | 6 |
Komatsu : H135s-1(S/N G61033) : Operator'S Cab : Ladder
| 18***40 | Limit Switch | 1 |
| 30***99 | Cable Clamp | 2 |
| 30***99 | Bolt | 1 |
Komatsu : H135s-1(S/N G61033) : Operator'S Cab : Ladders
| 30***99 | Screw | 15 |
| 30***99 | Screw | 6 |
| 30***99 | Screw | 0 |
Komatsu : H135s-1(S/N G61033) : Operator'S Cab : Operator'S Cab
| 05***40 | Grommet | 2 |
| 05***40 | Socket | 2 |
| 05***40 | Bulb 10 W | 4 |
Komatsu : H135s-1(S/N G61033) : Operator'S Cab : Operator'S Cab/Glazing
| 08***40 | Clamping Section 2800 Lg. (To Fig-Nos. 02,04) Bulk Ware, State Length Required | 2 |
| 08***40 | Filler Section 3000 Lg. Bulk Ware, State Length Required | 2 |
| 30***40 | Rear Window 803x458 | 2 |
Komatsu : H135s-1(S/N G61033) : Operator'S Cab : Operator'S Seat
| 30***99 | Bolt | 2 |
| 42***40 | Operator'S Seat Assembly | 1 |
| 50***98 | Screw | 3 |
Komatsu : H135s-1(S/N G61033) : Operator'S Cab : Operator'S Stand
| 26***40 | Air Cleaner, Cabin Supercharger | 1 |
| 30***40 | Rubber-Metal Block | 1 |
| 30***40 | Rubber-Metal Block | 1 |
Komatsu : H135s-1(S/N G61033) : Operator'S Cab : Pilot Control Arr.
| 30***99 | Screw | 3 |
| 30***99 | Bolt | 1 |
| 32***99 | Screw | 12 |
Komatsu : H135s-1(S/N G61033) : Operator'S Cab : Pilot Oil Units : Foot Controlled
Komatsu : H135s-1(S/N G61033) : Operator'S Cab : Pilot Oil Units : Hand Controlled
Komatsu : H135s-1(S/N G61033) : Operator'S Cab : Rails And Gratings
| 26***40 | Pin | 5 |
| 30***99 | Lock Washer | 16 |
| 30***99 | Screw | 0 |
Komatsu : H135s-1(S/N G61033) : Operator'S Cab : Slew Gear Brake
| 34***40 | Pilot Oil Unit Assembly | 1 |
| 69***22 | Return Spring | 1 |
| 75***73 | Base Assembly. Consist. Of Fig-Nos: 04-12 | 1 |
Komatsu : H135s-1(S/N G61033) : Operator'S Cab : Tension Rod Arr.
| 00***98 | Threaded Insert | 8 |
| 30***99 | Bolt | 8 |
| 30***99 | Bolt | 8 |
Komatsu : H135s-1(S/N G61033) : Operator'S Cab : Travelling Gear
| 33***99 | Nut | 1 |
| 34***99 | Pin | 2 |
| 36***40 | Pilot Oil Unit, Assembly | 1 |
Komatsu : H135s-1(S/N G61033) : Operator'S Cab : Windscreen Washing Assy.
| 05***40 | Wiper Motor 120? | 1 |
| 19***40 | Diaphragm Pump | 1 |
| 19***40 | Water Reservoir | 1 |
Slew Ring
Komatsu : H135s-1(S/N G61033) : Slew Ring : -Brake
| 31***99 | Socket Head Cap Srew | 12 |
| 33***99 | Seal Ring | 1 |
| 33***99 | Seal Ring | 1 |
Komatsu : H135s-1(S/N G61033) : Slew Ring : -Hydr. Motor
| 08***74 | Component Sealing Applies To Fig-No. 40, 58, 131 | 0 |
| 17***40 | Screw Plug | 1 |
| 24***40 | O-Ring | 1 |
Komatsu : H135s-1(S/N G61033) : Slew Ring : -Slew Gear Box
| 30***99 | Screw | 12 |
| 31***99 | Plug | 2 |
| 31***99 | Bolt | 6 |
Komatsu : H135s-1(S/N G61033) : Slew Ring : Slew Ring And Slew Gear Box Arrangement
| 12***40 | Dowel Pin | 2 |
| 18***40 | Bolt | 72 |
| 22***40 | Lip Type Seal Ng 25 X 9.200 mm Bulk Ware, State Length Required | 1 |
Superstructure
Komatsu : H135s-1(S/N G61033) : Superstructure
Komatsu : H135s-1(S/N G61033) : Superstructure : -Fan Motor
| 31***99 | Screw | 2 |
| 31***99 | Screw | 4 |
| 34***99 | Shim Washer 85x105x0,3 | 1 |
Komatsu : H135s-1(S/N G61033) : Superstructure : -Filter
| 33***99 | Nut | 1 |
| 44***40 | Aeration Filter, Assembly | 1 |
| 69***89 | Socket Housing | 1 |
Komatsu : H135s-1(S/N G61033) : Superstructure : -Pressure Relief Valve
| 31***99 | Plug | 1 |
| 31***99 | Eyebolt | 2 |
| 31***99 | Screw | 2 |
Komatsu : H135s-1(S/N G61033) : Superstructure : -Return Oil Filter
| 10***65 | O-Ring | 1 |
| 33***99 | Nut | 2 |
| 33***99 | Nut | 1 |
Komatsu : H135s-1(S/N G61033) : Superstructure : Fuel Tank
| 05***40 | Plug 3-Polig | 1 |
| 08***40 | Oil-Level Glass | 1 |
| 08***40 | Quick Disconnect Coupling | 1 |
Komatsu : H135s-1(S/N G61033) : Superstructure : Oil Cooler
| 12***40 | Hinge | 2 |
| 15***40 | Tape Roller | 2 |
| 16***40 | Profiled Joint Ca. 6000 Lg. Bulk Ware, State Length Required | 0 |
Komatsu : H135s-1(S/N G61033) : Superstructure : Oil Tank
| 00***98 | O-Ring | 1 |
| 00***98 | O-Ring | 1 |
| 00***98 | O-Ring | 1 |
Komatsu : H135s-1(S/N G61033) : Superstructure : Platform With Counterweight
| 13***40 | Pin | 2 |
| 21***40 | Bolt Lock | 4 |
| 30***99 | Bolt | 4 |
Komatsu : H135s-1(S/N G61033) : Superstructure : Suction Tank
| 08***40 | Quick Disconnect Coupling | 1 |
| 08***40 | Protection Cap | 1 |
| 20***40 | Plug | 1 |
Undercarriage
Komatsu : H135s-1(S/N G61033) : Undercarriage
Komatsu : H135s-1(S/N G61033) : Undercarriage : -Chain
| 44***40 | Track (H135-47 Links) | 1 |
| 69***25 | Spacer | 4 |
| 69***73 | Track Bush | 94 |
Komatsu : H135s-1(S/N G61033) : Undercarriage : -Hydr. Motor
| 08***74 | Component Sealing Applies To Fig-No. 40, 58, 131 | 0 |
| 17***40 | Screw Plug | 1 |
| 24***40 | O-Ring | 1 |
Komatsu : H135s-1(S/N G61033) : Undercarriage : -Top Roller
| 18***40 | Sliding Ring Seal | 1 |
| 30***99 | Bolt | 3 |
| 30***99 | Screw | 2 |
Komatsu : H135s-1(S/N G61033) : Undercarriage : -Track Roller
| 00***98 | O-Ring | 1 |
| 11***40 | Bottom Roller Assembly | 1 |
| 14***40 | Lifetime Seal | 2 |
Komatsu : H135s-1(S/N G61033) : Undercarriage : -Track Shoes 600 Wide
Komatsu : H135s-1(S/N G61033) : Undercarriage : -Traction Transmission
| 00***98 | O-Ring | 1 |
| 20***40 | Mechanical Seal | 1 |
| 30***99 | Bolt | 15 |
Komatsu : H135s-1(S/N G61033) : Undercarriage : Grease Tensioning Cylinder
| 18***40 | Wiper | 1 |
| 18***40 | V-Seal | 1 |
| 18***40 | Piston Ring | 2 |
Komatsu : H135s-1(S/N G61033) : Undercarriage : Hydraulic
| 00***98 | Half Flanged | 8 |
| 00***98 | Half Flange | 8 |
| 00***98 | O-Ring | 4 |
Komatsu : H135s-1(S/N G61033) : Undercarriage : Idler Assy.
| 00***99 | Top Roller Is Filled With Oil | 0 |
| 00***98 | O-Ring | 2 |
| 18***40 | Lifetime Seal | 2 |
Komatsu : H135s-1(S/N G61033) : Undercarriage : Rotary Joint
| 16***40 | Screw Plug | 4 |
| 20***40 | Screw Plug | 2 |
| 30***99 | Bolt | 4 |
Komatsu : H135s-1(S/N G61033) : Undercarriage : Track Adjuster (Nitrogen)
| 20***40 | Plug | 1 |
| 20***40 | Piston Ring | 2 |
| 20***40 | Piston Ring | 1 |
Komatsu : H135s-1(S/N G61033) : Undercarriage : Undercarriage
| 25***40 | Hv-Washer | 36 |
| 25***40 | Hv-Washer | 48 |
| 30***99 | Bolt 200lg. (Standard) | 72 |
Frequently asked questions
What engine does the Komatsu H135S-1 use?
The Komatsu H135S-1 uses a Komatsu diesel engine. Specific engine model and horsepower ratings vary by configuration and series; consult the machine's data plate or operation and maintenance manual for exact specifications.
What is the operating weight of the Komatsu H135S-1?
The operating weight of the Komatsu H135S-1 varies by configuration and series, typically ranging around 308,647 lb (140,000 kg). Exact weight depends on the installed boom, stick, counterweight, and track shoe configuration.
What model replaced the Komatsu H135S-1?
The Komatsu H135S-2 is the successor to the H135S-1 hydraulic shovel. It features updated hydraulic systems and undercarriage improvements for enhanced durability and performance in mining applications.
What H135S-1(S/N G61033) owners discuss
What are the typical hydraulic behaviors and failure modes for the Komatsu H135S-1 series?
What undercarriage and wear patterns are typical for this machine type?
What are the known engine quirks for this series?
What are the common electrical and sensor issues?
What should be checked when buying a used Komatsu H135S-1 (S/N G61033)?
What safety-critical fix requires dealer verification?
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 H135S-1(S/N G61033). Related factory variants of the same model family:
Need a specific H135S-1(S/N G61033) part?
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