This document is an operator's manual for the Menzi IHI 30v4 and 35v4 excavators, providing comprehensive information on safety, operation, maintenance, and specifications.
Function Description
The Menzi IHI 30v4 and 35v4 are compact excavators designed for various digging, ditching, loading, and gutter digging tasks. They feature a hydraulic system for operating the boom, arm, and bucket, as well as for specialized attachments. The machines are equipped with crawler tracks for mobility and a blade for stabilization and leveling. The 35v4 model includes a crawler extend/retract device for adjustable track width. The excavators are powered by a diesel engine and feature an operator's cabin with controls for all functions, including engine start/stop, throttle, travel speed, boom swing, and attachment operation.
Important Technical Specifications
Engine:
- Model: Yanmar 3TNV88-ESIK (Tier-3) or Yanmar 3TNV88F-ESIK (Tier-4)
- Type: Vertical in-line, water-cooled, 4-cycle diesel engine (Direct injection)
- No. of Cylinders - Bore x Stroke: 3 - 88 mm x 90 mm
- Displacement: 1.642 L
- Max. Rated Output:
- 17.5 kW/2200 min⁻¹ (Tier-3)
- 16.8 kW/2200 min⁻¹ (Tier-4)
Speed and Gradeability:
- Swing Speed: 9.0 min⁻¹
- Travel Speed (low/high): 2.7/4.7 km/h
- Gradeability: 58% (30 degrees)
Mass (30v4 / 35v4):
- Machine Mass (Rubber track): 3030 kg / 3450 kg
- Machine Mass (Steel track): 3080 kg / 3500 kg
- Base Machinery Mass (Rubber track): 2330 kg / 2680 kg
- Base Machinery Mass (Steel track): 2380 kg / 2730 kg
- Average Ground Bearing Pressure (Rubber track): 28 kg / 29 kg
- Average Ground Bearing Pressure (Steel track): 29 kg / 30 kg
Capacities:
- Fuel Tank: 42 L
- Hydraulic Oil (Total Quantity): 50 L
- Hydraulic Oil (Tank Level): 33 L
- Engine Oil (Maximum): 6.7 L
- Engine Oil (Minimum): 3.9 L
- Coolant (Total Quantity): 4.5 L
- Coolant (Engine Only): 2.0 L
Dimensions (30v4 / 35v4 - Unit: mm):
- Crawler Track Width: 300 / 300
- Crawler Overall Length: 2100 / 2260
- Crawler Overall Width (Contracted): 1550 / 1550
- Crawler Overall Width (Extended - 35v4 only): N/A / 1800
- Upper Structure Overall Width: 1500 / 1500
- Overall Height of Base Machine: 2480 / 2470
- Swing Radius: 775 / 865
- Ground Clearance of Undercarriage: 310 / 255
- Overall Length (Blade Forward): 4440 / 4750
- Overall Length (Blade Backward): 4980 / 5300
- Attachment Height in Transport Posture: 1525 / 1580
Working Range (30v4 / 35v4 - Standard Arm / Long Arm - Unit: mm):
- Maximum Reach: 4900 / 5190 (30v4); 5260 / 5540 (35v4)
- Maximum Digging Depth: 2700 / 3000 (30v4); 3080 / 3380 (35v4)
- Maximum Dumping Height: 3290 / 3390 (30v4); 3430 / 3540 (35v4)
Hydraulic System Diagram (Key Pressures):
- Main Relief Valve P1/P2 Pump: 24.5 MPa (250 kgf/cm²)
- Main Relief Valve P3 Pump: 20.6 MPa (210 kgf/cm²)
- Overload Relief Valve (Boom/Arm): 26.5 MPa (270 kgf/cm²)
- Overload Relief Valve (Bucket): 27.5 MPa (280 kgf/cm²)
- Overload Relief Valve (Blade): 22.6 MPa (230 kgf/cm²)
- Swing Relief Valve: 19.1 MPa (195 kgf/cm²)
- Remote Control Relief Valve: 3.4 MPa (35 kgf/cm²)
- Pump Flow Rate (Max.): P1: 34.7 L/min; P2: 34.7 L/min; P3: 23.1 L/min; P2 + P3: 60.5 L/min
Usage Features
The excavators offer multiple operation modes (A, B, C, D, F, G) that can be selected via a selector valve, allowing operators to adapt the machine's behavior to different tasks and preferences. The 35v4 model includes a crawler extend/retract function for enhanced stability or maneuverability in confined spaces. The operator's cabin is designed for comfort and safety, with an adjustable seat, seat belt, and optional air conditioner/heater. Safety features include a control lock lever to prevent accidental operation, a horn, and various warning indicators on the OK monitor for engine, battery, oil pressure, water temperature, and fuel levels. The machine also supports multiple AUX hydraulic lines for specialized attachments like hydraulic breakers, iron forks, and quick hitching devices, with dedicated controls for proportional flow and continuous operation.
Maintenance Features
The manual emphasizes periodic maintenance to ensure safe operation and prolong the machine's service life. Key maintenance aspects include:
- Greasing: Regular lubrication of attachment pins, boom swing, blade, swing bearing, and ring gear.
- Bucket Maintenance: Procedures for replacing bucket teeth and adjusting bucket clearance to prevent backlash.
- Crawler Track Maintenance: Inspection for wear, damage, and proper tension, with guidelines for rubber track care and replacement. The 35v4 model also includes inspection and cleaning of the crawler extending and contracting portion.
- Travel Reduction Gear: Checking and refilling oil levels, and oil changes.
- Hydraulic System: Checking and refilling hydraulic oil, replacing return filter cartridges, and cleaning the strainer. Instructions are provided for releasing internal pressure before maintenance.
- Engine Oil: Checking and refilling engine oil, and replacing the engine oil filter.
- Fuel System: Checking fuel quantity, refilling, and replacing the fuel filter. Procedures for discharging air from the fuel system are also included.
- Cooling System: Checking and refilling coolant, changing coolant, and inspecting the fan belt. Cleaning of radiator and oil cooler fins is also detailed.
- Intake Air System: Inspecting and cleaning the air cleaner element and dust indicator.
- Engine Adjustments: Guidelines for adjusting intake valve and exhaust valve clearance, checking the fuel injection system, inspecting the crankcase breather system, cleaning the coolant system, and lapping intake and exhaust valves (these often require professional service).
- Electric System: Replacing fuses and fusible links, and checking the battery.
- Tightening Bolts: Specific tightening torques for critical bolts in the travel unit, swing unit, engine, and counterweight.
- Cold Weather Handling: Recommendations for fuel, coolant, lubricant, battery, and finishing work in cold conditions.
- Long Term Storage: Procedures for preparing the machine for storage, including cleaning, lubrication, battery care, and periodic operation during storage.
The manual stresses the importance of safety precautions, including reading safety signs, making a work plan, wearing proper protective clothing, watching for underground utilities, performing walk-around inspections, preventing fires, installing the ROPS canopy, and carefully mounting/dismounting the machine. It also warns against operating from outside the seat, not fastening the seat belt, allowing unauthorized personnel near the machine, operating in enclosed areas, digging near cliffs, exceeding machine performance, and leaning out of the window. Specific warnings are given for working under tracks, handling hot engine parts, and dealing with pressurized hydraulic systems and batteries.
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