This is the factory service manual for the Mustang ME6003 compact excavator, part number 918175, covering the machine built around the Yanmar 4TNV98-VNS EPA Tier II diesel. The 180 page PDF is the same shop reference a dealer technician works from, with a searchable text layer and 191 built in bookmarks for fast navigation.
Inside you get engine, hydraulic, and electrical coverage: torque values, fluid and filter intervals, track tension figures, and the full set of hydraulic circuit and wiring harness diagrams for both wiring versions. Whether you are chasing a no start, restoring lost hydraulic power, or tracing a wiring fault, the procedures and specifications are laid out for real repair work.
Owners, independent mechanics, and restorers can download it instantly and print any page they need at the bench.
What's Inside This Manual
| System | Pages | Key Topics |
|---|---|---|
| Hydraulics Diagram | 131 | Gear Motor, Dozer Blade Cylinder, Slewing Cylinder, Auxiliary Hydraulics, Dipper Arm Cylinder, Travelling Drive |
| Main Valve Block Diagram | 132 | Pilot Control Lines, Main Control Lines, Pump/tank Lines, Bucket Cylinder, Boom Cylinder, Gear Motor |
| Hydraulics Diagram with 3rd Control Circuit (Option) | 133 | Gear Motor, Dozer Blade Cylinder, Slewing Cylinder, Auxiliary Hydraulics, Dipper Arm Cylinder, 3rd Control Circuit |
| Main Valve Block Diagram with 3rd Control Circuit (Option) | 134-142 | Pilot Control Lines, Main Control Lines, Pump/tank Lines, 3rd Control Circuit, Bucket Cylinder, Gear Motor |
| Wiring Harness 1000109629: Cab Roof | 143 | Loudspeaker, Radio, Wiper Motor, Front Roof Light, Interior Light, Rotating Beacon |
| Wiring Diagram Version 1 | 144 | Fuses, Relays, Switches, Indicators, Alternator, Starter |
| Wiring Diagram Version 1: Legend | 145 | Fuses, Relays, Switches, Indicators, Alternator, Pilot Valves |
| Wiring Diagram Version 1 | 146 | Fuses, Relays, Switches, Indicators, Alternator, Starter |
| Wiring Diagram Version 2: Legend | 147 | Fuse, Relay, Switch, Indicator, Solenoid Valve, Wiring Connection |
| Wiring Diagram Version 2 | 148 | Fuses, Relays, Switches, Indicators, Solenoids, Wiring Connections |
| Wiring Harness 1000109624 (Legend): Engine - Chassis | 149 | Alternator, Starter, Main Fuse, Cut-Off Solenoid, Fuel Pump, Solenoid Valve |
| Wiring Harness 1000109624: Engine - Chassis | 150 | Main Fuses, Relays, Alternator, Fuel Pump, Solenoid Valves, Wiring Connections |
| Wiring Harness 1000109630 (Legend) Version 1: Switches | 151 | Pre-Heating Start Switch, Drive Interlock Connection, Indicator Connection, Boom Working Light Switch, High Speed Switch, Fuse |
| Wiring Harness 1000109630 Version 1: Switches | 152 | Switches, Indicators, Fuses, Relays, Wiring Connections, Accessory Power Socket |
| Wiring Harness (Legend) Version 2: Switches A4 | 153 | Pre-Heating Start Switch, Drive Interlock Connection, Indicator Connection, Warning Buzzer, Boom Working Light Switch, Solenoid Valve |
| Wiring Harness Version 2: Switches | 154-180 | Switches, Indicators, Fuses, Relays, Wiring Connections, Warning Buzzer |
Quick Reference Specifications
| Specification | Value | Page |
|---|---|---|
| General tightening torques note | Use these torque values when tightening hardware (excluding locknuts, and self-tapping, thread-forming, and sheet metal screws) unless specified otherwise. | p. 36 |
| Fuel filter replacement interval | Every 250 Hours | p. 50 |
| Hydraulic oil tank capacity | 22 gals. (83 L) | p. 31 |
| Track tension deflection | 3/4”-1” (20-25 mm) | p. 66 |
| Hydraulic hoses replacement interval | Every six years | p. 80 |
| Battery terminals grease specification | FINA Marson L2 | p. 67 |
| Fuse F1 (Main fuse box with relays) rated current | 40 Amp | p. 33 |
| Pressure switch for engine oil pump | 7.25 +/- 0.1.5 psi (0.5 +/- 0.1 bar) | p. 29 |
| Main pressure limiting valve P1, P2 | 3553±44 psi (245±3 bar) | p. 31 |
| Thermal switch operating temperature | 225 – 235 °F (107 – 113 °C) | p. 29 |
| Engine Output | 57 hp (42.5 kW) @ 2100 rpm | p. 29 |
| Engine Max. torque | 184 lb.-ft. (249 Nm) @ 1400 rpm | p. 29 |
