This is the factory service manual for the Mustang ME3803ZT compact excavator (2006), powered by the Yanmar 3TNV88-PNS diesel engine. Published as part number 918207, it runs 174 pages of operation, specifications, maintenance, and repair detail.
Coverage includes machine operation and identification, chassis and engine specifications, the full maintenance program, engine service on the 3TNV88-PNS, the hydraulic system with its PVD pump and main valve block, the electrical system with wiring diagrams, and the options group for air conditioning, counterweight, and auxiliary hydraulics.
With this PDF you can set valve clearance, bleed and service the fuel system, pressure-test and adjust the hydraulics, wire and trace electrical faults against the diagrams, and set up attachments and proportional controls. It puts dealer-level procedures in the hands of an owner or independent mechanic.
What's Inside This Manual
| System | Pages | Key Topics |
|---|---|---|
| Operation | 9-22 | General Information, Serial Number Location, Designated Uses and Exemption From Liability, Abbreviations/symbols, Identification of Warnings and Dangers |
| Specifications | 23-38 | Chassis, Engine, Hydraulic System, Undercarriage and Swivel Unit, Dozer Blade, Electrical System, Noise Levels, Coolant Compound Table |
| Maintenance | 39-90 | Fluids and Lubricants, Maintenance Label, Maintenance Schedule, Service Packages, Introduction, Fuel System, Engine Lubrication System |
| Engine | 91-104 | 3TNV88-Pns Engine: Overview, Fuel System, Checking and Adjusting Valve Tip Clearance, Order for loosening/tightening Cylinder Head Bolts |
| Hydraulic System | 105-140 | Hydraulic Pump Pvd-2B44BP-16G5-4713F, Main Valve Block, Drive Counterbalancing System, Regeneration - Dipper Arm Section, Bucket Pre-Tension |
| Electrical System | 141-154 | Ohm's Law (Current, Voltage, Resistance); Power, Measuring Equipment and Methods, Cable Color Coding, Relays, Electrical Units, Fuse Box in Instrument Panel |
| Options | 155-174 | Air Conditioning, Counterweight, Short Dipper Arm, Auxiliary Hydraulics Connections, Proportional Controls |
Quick Reference Specifications
| Specification | Value | Page |
|---|---|---|
| Model-specific tightening torque for Live ring | 133 lb.-ft. (180 Nm) | p. 29 |
| Tightening torque for Metric hose fittings (light execution, DKOL) - Nominal ø 05 | 11 lb.-ft. (15 Nm) | p. 29 |
| Hydraulic hose replacement interval | every six years | p. 79 |
| Tightening torque for Metric hose fittings (light execution, DKOL) - Nominal ø 05, Outer ø 6L, Thread M12X1.5, Width across flats W/F 14 | 11 lb.-ft. (15 Nm) | p. 29 |
| Hydraulic seals replacement advice | Replace the hose or line if any of the following problems are detected. Damaged or leaking hydraulic seals. | p. 75 |
| Pin diameter (Kinematics) | 1-1/2" (40 mm) | p. 37 |
| Pin distance to bucket mount (Kinematics) | 7" (180 mm) | p. 37 |
| Number of track rollers on either side | 1/4 (top/bottom) | p. 26 |
| Tightening torque for Track roller | 203 lb.-ft. (275 Nm) | p. 29 |
| Cause of hydraulic power loss/overheating (Proportional controls) | Operating the hammer with characteristic Curve 1 does not ensure full throughput, which will cause power loss and system overheating. | p. 165 |
| Cause of hydraulic overheating (Auxiliary hydraulics flow rate adjustment) | Intermediate positions of the set screws cause the hydraulic oil to heat up | p. 116 |
| Engine Output | 28 hp (21 kW) @ 2400 rpm | p. 23 |
