Looking for the factory service manual behind your Mustang ME8002 Compact Excavator? OEM #918173 runs the full machine across 156 pages, from diesel engine specs and maintenance schedules to a complete hydraulic teardown. The hydraulic schematics trace fluid paths through the main valve block, secondary valve block, pilot oil supply unit, and swivel joint. Wiring diagrams cover two serial-number ranges (up to and from AB00473), with relay positions, fuse box layout, solenoid stop, and armrest connections all mapped. Before the machine goes back to work, fill the hydraulic oil system to 122 L (128 qts) and set track deflection to 20-25 mm. Every idle hour is money left on the table. Bookmarked by section and keyword-searchable, the PDF opens on any device, so you can read it at the desk or out at the machine.
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
Mustang ME8002 boom arm and bucket sluggish or won't lift, hydraulic response weak
Check hydraulic oil level; the system holds 128 qts. (122 L) total. If level is correct, bleed air from the pump and suction line using the procedure on page 34. Open the troubleshooting chart and verify main system pressure reaches 4351 psi (300 bar). Inspect all hoses and seals for visible leakage before pulling the pump.
Manual Section: HydraulicTracks sagging or riding off rollers, uneven wear visible on one side p. 47
Measure track sag at the midpoint between the drive sprocket and front idler. Target deflection is 3/4 to 1 inch (20 to 25 mm). Adjust tension using the procedure on page 47, either greasing the tensioner to tighten or releasing grease to loosen. Inspect rollers and idlers for flat spots or weeping seals while the track is slack.
Manual Section: MaintenanceEngine cranks but won't fire, or fires then dies immediately in cold weather p. 123
Test the glow plug relay circuit in the electrical section on page 125; a dead relay or failed plug means no pre-heat in cold temps. Once started, confirm idle settles between 1050 and 1150 rpm. If the engine cranks normally but cuts out immediately, diagnose a solenoid stop fault starting at page 123.
Manual Section: Diesel EngineBucket pivot and boom arm pins binding, grinding, or stiff under load p. 18
Grease every fitting on the bucket linkage, arm pivot, and boom pins at each service interval. Check the maintenance schedule on page 18 for all lube points. If you feel binding or hear metal contact under load, pull the pin, measure for oval wear, and reference geometry specs on page 14 before pressing in new bushings.
Manual Section: MaintenanceHydraulic system runs hot, oil appears dark brown or smells burnt after work
Drain the system completely and refill to the 128 qt. (122 L) capacity. Use the troubleshooting procedures to check for a stuck relief valve or excessive internal bypass. Verify main pressure holds at 4351 psi (300 bar) after the change. Inspect the filter element and return strainer for metal particles before returning to service.
Manual Section: HydraulicEngine stalls repeatedly after fuel filter service or running the tank dry
Open the bleed screw on the secondary fuel filter and crank the engine in short bursts until solid fuel flows with no bubbles. Work from the tank forward to the injection pump, bleeding each point in sequence. Injection pressure must reach 3191 to 3336 psi (220 to 230 bar) once purged. Tighten all fittings before a final start attempt.
Manual Section: Diesel EngineFrequently Asked Questions
What are the torque specs for the Mustang ME8002?
Torque values vary by fitting and thread type. A hydraulic fitting with light application, M10X1.0 thread with an elastic seal, takes 13 lb-ft (18 Nm). A coarse-pitch M10 thread in strength class 10.9 takes 48 lb-ft (65 Nm) per DIN 912, DIN 931, DIN 933, and similar standards. The full tables run from page 153 under 'Torque Specifications.'
How do I troubleshoot Mustang ME8002 hydraulic problems?
Always bleed the hydraulic system before any maintenance. Bring the machine to operating temperature, hydraulic oil at least 122°F (50°C), before running a pressure test. A pressure drop over 10% of the setting points to a leak, often a defective O-ring in a secondary valve. The 'Technical Data' chapter lists the specific hydraulic settings.
How do I bleed the fuel system on a Mustang ME8002?
Start by checking the fuel tank level and turning the fuel valve to the 'Open' position (see Picture 2). Open the air bleed bolts and valves on the filters, then use the fuel priming pump to pump fuel into the system until it runs free of air bubbles. Close the bleed bolts and repeat in this order: water separator, fuel filter, fuel injection pump.
Mustang ME8002 torque specs
Tightening specs depend on the fitting. For a hydraulic fitting under light application, the M10X1.0 thread with an elastic seal calls for 13 lb-ft (18 Nm). A coarse-pitch M10 thread, strength class 10.9, calls for 48 lb-ft (65 Nm) per DIN 912, DIN 931, DIN 933, and related standards. Page 153 onward lists every value in the 'Torque Specifications' tables.
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.
Document Quality
This document is a high-quality scanned PDF, not a native digital file. All text is part of the image layer, so you cannot search or copy text directly; however, an accurate OCR layer is present, allowing for full text searchability. The text throughout the manual is crisp and consistently easy to read, with no blurriness or fading. Diagrams, illustrations, and photos are clear raster images, and all labels are sharp and perfectly legible. Pages are clean with no noticeable scan artifacts, stains, marks, or skewed content, maintaining a professional appearance. There are a few pages explicitly marked as "This page intentionally left blank" within the document.
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