This is the factory Mustang Service Manual for the ME2503, ME3003, ME3503, and ME3703 compact excavators, form number 918149, a 138 page PDF. Across the range these machines run Kubota D1403-B and D1703-B or Yanmar 3TNE88 and 4TNE88 diesel engines, and the manual separates the specifications by engine and serial number.
Inside you get technical data with dimensions, lift capacities, and tightening torques, scheduled maintenance and lubrication, the full hydraulics chapter with pump, pilot oil supply, main valve block, and swivel and drive units, diesel engine coverage, electrical diagrams, operating elements, and the attachment and bucket lists.
From a no-start diagnosis to a swivel unit rebuild, this manual gives you the procedures and per-model torque values to service the machine correctly. It is a searchable PDF you can download immediately and print at the bench.
What's Inside This Manual
| System | Pages | Key Topics |
|---|---|---|
| Technical Data | 9-30 | Dimensions, Bucket and Geometry, Lift Capacities, Hydraulic System, Tighten Torques |
| Maintenance | 31-50 | Maintenance Schedule, Lubricants, Hydraulic System, Auxiliary Hydraulics, Hydraulic Pump, Hose Burst Protection Valve, Drive Unit, Swivel Unit |
| Hydraulic Component Location | 52-55 | Hydraulic System |
| Hydraulic Pump | 56-60 | |
| Pilot Oil Supply Unit | 61-65 | |
| Main Valve Block | 66-81 | |
| Swivel Unit | 82-91 | Pilot Control Valves |
| Drive Unit | 92-101 | |
| Switch Valves | 102-107 | Swivel Joint |
| Hydraulic Oil Tank | 108 | |
| Diesel Engine | 109-112 | Diesel Engine Overall, Alternator, Starter, Water Cooler |
| Electrical | 113-124 | Diagram for Kubota Diesel Engine Starting at Serial No. AB00001 (Name Description), Abbreviation Color, Console Right Arm Rest Electrical Diagram |
| Operation Elements | 125-132 | Major Components, Cab Equipment and Controls, Instrument Panel Functions, Hydraulic Connections for Additional Attachments, Brakes and Swivel Lock Mechanism |
| Attachment | 133-138 | Bucket List 253, Bucket List 303/353/373, Notice (Gehl: 253 Usability, 303/353/373 Usability), Company Information |
Quick Reference Specifications
| Specification | Value | Page |
|---|---|---|
| ME3503 | ||
| Turntable torque | 220.5 lb-ft. (299 Nm) | p. 30 |
| Track Roller torque | 132.8 lb-ft. (180 Nm) | p. 30 |
| ME3503, ME3703 | ||
| Hose burst protection valve clearance 'S' | 0.039" (1,0 mm) | p. 22 |
| All Models | ||
| Metric hose joints (DN 05 RA 6L M12 x 1,5 SW 14) torque | 11 lb-ft. (15 Nm) | p. 27 |
| Heating seals check interval | every 50h (weekly) | p. 34 |
| Battery capacity (Kubota engine) | 12 / 70 V / Ah | p. 23 |
| Hydraulic oil operating temperature for pressure test | at least 104°F (40°C) | p. 37 |
| Auxiliary hydraulic piston operation | must be operated fully in both directions | p. 44 |
| Kubota engine thermostat opening temperature | 157—163°F (69,5—72,5°C) | p. 23 |
| ME2503, ME3003 | ||
| Battery capacity (Yanmar engine) | 12 volts / 71 amps | p. 25 |
