This is the factory Mustang ME8002 Service Manual, part number 918173, a 156 page PDF covering the ME8002 compact excavator powered by the Yanmar 4TNE98-NSR diesel engine.It carries the full workshop content a mechanic needs: technical data and lift capacities, scheduled maintenance and lubrication, the complete hydraulic system with pump, pilot oil supply, and main and secondary valve blocks, diesel engine service items, electrical wiring diagrams, operating elements, and torque specifications. Hydraulic settings, engine idle speed, valve clearances, and fitting torque values are listed with the pages that carry them.Whether you are chasing a hydraulic fault, setting track tension, or rebuilding a valve block, this manual lets you diagnose and repair the machine yourself instead of guessing. It is a searchable PDF you can download now and print any page you need at the bench.
What's Inside This Mustang ME8002 Manual
| System | Pages | Key Topics |
|---|---|---|
| Technical Data | 5-16 | Dimensions, Performance, Bucket and Geometry, Lift Capacity Chart, Hydraulic System, Auxiliary Hydraulics, Diesel Engine Specifications |
| Maintenance | 17-50 | Maintenance Chart, Maintenance - General, Lubricants, Lubrication Chart, Hydraulic System, Hydraulic Pump, Hose Burst Protection Valve, Drive Unit |
| Position of Components | 52-57 | Hydraulic System |
| Hydraulic Pump | 58-65 | - |
| Pilot Oil Supply Unit | 66-71 | - |
| Main Valve Block | 72-97 | - |
| Pilot Control Valves | 98-106 | Secondary Valve Block |
| Swivel Unit | 107-113 | - |
| Driving Unit | 114-117 | Shuttle Valves |
| Oil Tank - Hydraulic System | 118-122 | Switch Valve, Swivel Joint, Load Lowering Valve |
| Diesel Engine | 123-124 | Diesel Engine Specifications |
| Electrical | 125-142 | Electrical Wiring Diagram (Up to Serial Number AB00473), Relay Position, Solenoid Stop, Glow Control Lamp Relay Plug, Fuse Box |
| Operating Elements | 143-152 | Component Designation, Joystick Consoles Component Designation, Joystick Functions, Auxiliary Hydraulics / Arm Swing, Lifting the Excavator |
| Torque Specifications | 153-156 | Hydraulic Fittings with Various Seals, With Coarse-Pitch Thread (Threads According: 912, Din 931, Din 933, Etc, 7984) |
Quick Reference Specifications
| Specification | Value | Page |
|---|---|---|
| Coarse-pitch thread M10, grade 8.8 (DIN 912, DIN 931, DIN 933, etc.) | 33 lb-ft (45 Nm) | p. 154 |
| Track deflection | 3/4 – 1“ (20 – 25 mm) | p. 47 |
| Hydraulic fitting M10X1.0 with elastic seal (light application) | 13 lb-ft (18 Nm) | p. 153 |
| Hose burst protection valve clearance S (Dozer Blade Cylinder) | 0.134" (3.4 mm) | p. 13 |
| Hydraulic Oil System Fill Capacity | 128 qts. (122 L) | p. 23 |
| Engine Oil Pan Capacity (Max) | 10.8 qts. (10.2 L) | p. 23 |
| Coolant Content (without cooler) | 9 qts. (8.7 L) | p. 15 |
| Main Pressure Limiting Valve (Pump P1, P2) | 4351 psi (300 bar) | p. 12 |
| Pilot Oil Pressure | 508 psi (35 bar) | p. 12 |
| Valve Clearance (Intake / Exhaust) | 0.006 – 0.010 in (0.15 – 0.25 mm) | p. 14 |
| Engine Idle Speed | 1050 – 1150 rpm | p. 44 |
| Cylinder Head Bolt Torque (2nd pass) | 76 – 83 lb-ft (103 – 112.7 Nm) | p. 46 |
Mustang ME8002 Common Problems This Manual Covers
Weak or erratic digging response
Boom, arm, and bucket that feel slow or lurch usually point to low or aerated hydraulic oil, a leaking valve, or worn pump components. The hydraulic section walks the pump, pilot oil supply, and valve blocks so you can isolate the fault.
Manual Section: Hydraulic p. 51Poor tracking and fast undercarriage wear
Track tension is often overlooked, which leads to premature wear and handling problems on compact excavators. The maintenance chapter covers the drive unit and undercarriage checks needed to keep the machine tracking straight.
Manual Section: Maintenance p. 17Leaks at hydraulic hoses and seals
Weeping fittings, tired seals, and a soft hose burst protection valve show up as drips and lost lift. Routine hydraulic inspection and the hose burst protection valve procedure help you find and stop the source.
Manual Section: Hydraulic p. 51Neglected grease points cause wear
Grease points on pins, bushings, and bucket linkages are commonly missed during daily service, accelerating slop in the front end. The lubrication chart shows every point and its interval.
Manual Section: Maintenance p. 17Hard starting or rough idle
Difficult starts and an unsteady idle often trace to injection pressure, valve clearance, or fuel delivery on the Yanmar 4TNE98. The diesel engine service items and specifications give the values to check.
Manual Section: Diesel Engine p. 123Electrical faults, relays and glow control
No crank, glow lamp trouble, or a blown circuit usually comes back to a relay, the solenoid stop, or the fuse box. The electrical section provides the wiring diagrams and relay positions for both serial ranges.
Manual Section: Electrical p. 125Frequently Asked Questions
Which machine and engine does this manual cover?
It covers the Mustang ME8002 compact excavator, part number 918173, powered by the Yanmar 4TNE98-NSR diesel engine. It is a single-model service manual, so every procedure and specification applies directly to the ME8002.
Are torque specifications included?
Yes. The Torque Specifications section lists tightening values for hydraulic fittings and coarse-pitch thread fasteners, including grade 8.8 hardware and sealed hydraulic fittings, so you can reassemble to the correct figures. p. 153
Does it include hydraulic repair procedures?
Yes. The Hydraulic section details the pump, pilot oil supply unit, main and secondary valve blocks, pilot control valves, swivel unit, and load lowering valve, with the settings and clearances needed to test and rebuild the circuit. p. 51
Are wiring diagrams included?
Yes. The Electrical section provides full wiring diagrams for both serial ranges, up to and from serial number AB00473, plus relay positions, the solenoid stop, glow control lamp relay, and fuse box layout. p. 125
How quickly can I access this Mustang ME8002 manual after buying?
A 156-page searchable PDF, ready to download the moment you buy. It works on any device, so you can pull it up on your phone right at the machine. No shipping, no waiting.
Are there any print restrictions on this Mustang ME8002 manual?
None. The PDF is DRM-free, so print whatever sections you need for the shop. Standard letter or A4 paper both work.
Are there wiring harness diagrams in this Mustang ME8002 manual?
Included. The Mustang ME8002 Service Manual covers complete wiring harness diagrams, electrical circuits, and connector pinouts.
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