Furukawa JTH2RS-190EX 2-Boom Wheel Jumbo Instruction Manual (HD190 Drifter, GH190 Guide Shell)

Description

Furukawa JTH2RS-190EX 2-Boom Wheel Jumbo Instruction Manual

The JTH2RS-190EX is a twin-boom hydraulic wheel jumbo built for tunnel driving and shaft work, and this is the instruction manual that belongs with it. Published under document number JTH2RS-190EX-F102E, the 203-page volume works through the carrier, both drilling booms, both charging cages and the hydraulic, electric, pneumatic and water systems that link them. Everything is written for the person at the controls and the person on the tools: what to look at before the shift starts, how each lever and switch is meant to behave, and the pressures, torques and clearances to work to when a unit has to come apart.

File Details

• Manual type: Instruction manual covering operation, inspection, maintenance and component service
• Brand: Furukawa
• Model: JTH2RS-190EX 2-Boom Wheel Jumbo
• Document number: JTH2RS-190EX-F102E
• Language: English
• Page count: 203 pages
• File format: PDF

Chapters Covered

• Safety Information
  • Machine Number, Safety Precautions, Preparation for Safety
  • Before Starting the Operation, When Starting the Operation
  • Traveling, Transportation, Drilling and Others
  • Interlock of Charging Cage, Operation, After Working
  • Parking/Stopping, Engine, Control Levers, Hydraulic Unit, Water Booster Pump
• General Specifications
  • Specifications, Drifter, Guide Shell, Boom, Charging Cage, Carrier
  • Engine, Muffler, Hydraulic Transmission, Axle and Wheel, Brake, Steering, Outrigger
  • Electric Equipment and Hydraulic Devices
  • Compressor and Flushing Water, Automatic Control and Safety Device
  • Capacity of Oil, Standard Equipment
• General View
• Front Drilling Coverage
• Operation Equipment
  • Names of Units, Meter Panel, Traveling Equipment
  • Pressure Gauge, Working Device Selector Lever
• Operation
  • Everyday Inspection, Start of Engine, After Starting Engine
  • Traveling, Installing Outriggers, Stop of Engine
• Drilling Equipment
  • Drilling Device Control Lever, Boom Control Lever, Drifter Control
  • Lubricator, Charging Cage Move Warning Lamp
  • Switch Boxes for Hydraulic Pack, Compressor/Water Pump and Charging Cage
  • FIDS Control, Detergent Control Device, Deck Lift Lever
• Drilling Operation
  • Preparation for Drilling, Operation of Hydraulic Pack and Oil Supply to Lubricator
  • Warm-Up, Drilling, Additional Work with Charging Cage, Retreating
  • Adjustment Procedure of Drilling Hydraulic System
• Maintenance
  • Every 50 Hours, Every 150 Hours, Every 300 Hours, Every 600 Hours, Every 1000 Hours Inspection
  • Disassembly and Cleaning of Lubricator, Maintenance List
• Fuel and Lubricating Oil
  • Fuel, Lubricating Oil, Oil Feeder, Lubricating Oil Selection Table
• HD190 Drifter
  • Specifications, Features, Names of Parts
  • Structure and Functions: Percussion, Hydraulic Damper, Rotation, Flushing, Forced Lubrication
  • Daily and Periodical Inspection, Tightening Torque of Screws
  • Accumulator, Fixing on Carriage, Changing to Symmetrical Drifter, Stroke Adjustment
• Standard of HD190 Inspection/Repair
• Orbit Motor (#2000 Series)
  • Structure and Main Components, Replacement of Shaft Seal and Shaft Face Seal
  • Disassembly/Assembly of the Whole Motor, Checking the Rotation Direction
• Hydraulic Drifter Accumulator (HD150-F06A)
  • Structure and Functions, Pressure Inspection and Charging of Gas, Charged Pressure
• GH190II Guide Shell (GH190-F101A)
  • Outline of Structure, Guide Shell Main Body, Feeder, Hydraulic Cylinder, Centralizer
  • Lubrication, Adjustment of Wire Rope, Adjustment of Guide Plate Clearance, Oil Hose
• JE331 Extension Guide Roll Boom (JE331-F03B)
  • Specifications, Safety Rules and Cautions, Cautions for Welding
  • Removal of Boom, Maintenance of Boom, Lubricating Points, Bolt Positions and Tightening Torques
  • Repair and Adjustment for Each Unit, Guide Up System, Setting the Steel Support
• Yoke Slide Type Charging Cage (ZN710-F02B)
  • Cautions for Safety, Structure, Specifications, Control Box and Operation
  • Interlock, Maintenance
• Compressor (ZN500-F03)
  • General View, Function of Each Unit, Operation, Resetting
• Water Booster Pump (ZN510-F05)
  • Outline, Functions, Operation, Cautions for Reverse of Hot Water
• Electric Control Panel (ZN600-F02)
  • Cautions for Safety, Arrangement of Electric Parts and Devices
  • Explanation of Electric Mechanism, Handling the Electric Devices in the Control Panel
  • Electric Insulation Resistance
• Cable Reel (ZN650-F01)
  • Outline of Structure, Names of Components, Check List, Electric Power Supply
• Traveling HST (Hydrostatic Transmission) (ZN5730-F12A)
  • Operation Principle, Maintenance and Inspection
  • HST Circuit Diagram, Trouble Shooting

Read together, those chapters form a single working reference rather than a loose collection of topics. The specifications chapter fixes the machine’s baseline numbers, then the operation equipment and drilling equipment chapters explain what each control does and when to use it. From there the manual moves into the actual drilling routine, and finally into the service material that keeps the jumbo productive: hour-based inspection tables, oil and lubricant selection charts, drifter wear limits, accumulator charging curves and hydraulic system adjustment values.

Machines and Systems Covered

The manual is written around the JTH2RS-190EX carrier but treats each major assembly as its own document set, so the same file serves the drifter, boom, guide shell, cage and power systems:

• Hydraulic drifter: 2 x HD190 (HD190-F02A), with the HD190 inspection and repair standard (HD190-F03A)
• Guide shell: 2 x GH190 (GH190II, GH190-F101A), 33 and 40 feed versions
• Boom: 2 x JE331 extension guide roll boom (JE331-F03B)
• Charging cage: 2 x ZN710 yoke slide type (ZN710-F02B)
• Carrier: ZN5721
• Compressor: ZN500-F03 with unloader control
• Water booster pump: ZN510-F05 vertical multi-step turbine pump
• Electric control panel: ZN600-F02
• Cable reel: ZN650-F01 with slip ring and carbon brush current collector
• Traveling HST: ZN5730-F12A hydrostatic transmission
• Orbit motor: #2000 series, side port and rear port types
• Accumulator: HD150-F06A hydraulic drifter accumulator

What the Maintenance Schedule Actually Gives You

The maintenance chapter is broken into 50, 150, 300, 600 and 1000 hour intervals, and each interval lists real tasks rather than general advice. At 50 hours the manual walks through drive gear box oil level checks, Y strainer cleaning, greasing of the steering axle, suspension pins, propeller shaft and cable reel drive gear, and cleaning of the ceramic filter in the black smoke purification muffler with the correct compressed air pressure limit. The 150 hour section covers engine oil and filter replacement, battery electrolyte inspection, axle oil quantity checks, compressor air filter cleaning and drifter accumulator gas pressure. At 300 hours the return filter element, HST line filter, air cleaner element, cable reel brushes and slip ring, disk brake air bleeding and brake pad measurement are all covered. The 600 and 1000 hour intervals add fuel filter replacement, hydraulic oil replacement, suction filter elements for both the drilling and traveling tanks, drive gear box oil, axle gear oil and brake oil replacement.

Safety, Inspection and Start-Up Procedures

The safety information is not a token page. It covers pre-start walk-around checks, travelling posture and the correct boom, guide shell and drifter positions for roading the machine, outrigger setting on solid ground, minimum turning radius, loading and unloading on a trailer including ramp grade limits and drag placement, towing precautions with instructions for releasing internal pressure in the traveling hydraulic pump, and the specific dangers of working under the guide shell, boom or charging cage. The charging cage interlock rules are set out separately, including the boom swing interlock that only permits the boom to swing inward from the rail centre when the yoke is at the front end.

Drilling Operation and Hydraulic Adjustment

The drilling operation chapter takes the operator from connecting the water and blow air hoses and cabtire cable through control panel checks, compressor and water pump start-up, hydraulic pack operation and lubricator oil supply, warm-up, hole positioning, drilling with either independent levers or the multi-control lever, cage work and retreating. The hydraulic system adjustment section then goes deeper than most manuals: component names and positions on the main block unit and hydraulic pack, the factory set values for the relief valves, needle valve and pump flow adjustment screws, and a step-by-step procedure for setting regular percussion pressure, collaring percussion pressure, maximum forward pressure, collaring forward pressure, drilling forward speed and rod rotary speed.

Component Overhaul Detail

The drifter chapter explains the percussion mechanism, the built-in hydraulic damper, rotation, flushing and forced lubrication as separate systems, then gives daily and periodical inspection tables, screw tightening torques, accumulator diaphragm replacement with the special holder and lever tool, carriage fixing torque, and the full procedure for converting between symmetrical left and right drifter configurations by repositioning the percussion ports, rotating the orbit motor, swapping the flushing flange adapter and cover, and turning the back head. The orbit motor chapter covers shaft seal and shaft face seal replacement, complete disassembly and reassembly with the Geroler star and valve timing marked at 15 degrees, and rotation direction checks for both port types. The boom chapter includes the bolt tightening torque table, power lock adjustment for the guide rotary unit with the staged torque sequence, boom slide and guide slide adjustment, rotary actuator installation and removal, dummy bolt checks and the guide up system setup.

Why This Manual Belongs With the Machine

Work on a twin-boom jumbo is expensive when it is done by guesswork. A drifter set to the wrong percussion pressure shortens shank rod life; a charging cage pushed past its 250 kg limit or operated without the interlock understood puts people at risk; a hydraulic pack started with a control lever out of the stop position moves a boom unexpectedly. This manual supplies the actual values and the actual sequence for those situations, plus the wear limits that tell you when a chuck driver bush, guide plate or brake pad has reached the end of its service life.

Delivery is instant. The file is a PDF that opens on a laptop, tablet or phone in the workshop or the tunnel, and any page can be printed for the machine or the maintenance folder. No shipping, no waiting, no separate order for the section you need today.

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