This is the factory service manual for the Mustang ML 48T all-wheel-steer loader, part number 918139, dated 2005, covering 208 pages of service and troubleshooting for the machine and its Deutz F4M 2011 engine.Sections run through machine operation, the engine, the hydrostatic power train, the front and rear axles, the brake and steering circuits, the work hydraulic system, the electrical system, and a dedicated torque specification chapter. Reference data includes the 59 DIN hp rating at 2400 rpm, the 295 lb.-ft. wheel nut torque, the 4931 psi (340 bar) variable pump pressure, and the 3046 psi (210 bar) work hydraulics pressure.Owners and mechanics can use it to diagnose weak hydraulics, steering and brake faults, and engine power loss, then set fasteners and pressures to factory values. The PDF is searchable and bookmarked, so you can find a procedure fast and print only the pages you need in the shop.
What's Inside This Mustang ML 48T Manual
| System | Pages | Key Topics |
|---|---|---|
| Operation | 9-16 | Important Information on Service Manual, Type Decals and Component Numbers, Machine Overview, Cab Overview, Instrument Panel, Levers: Overview |
| Engine | 63-78 | BF4M 2011/ F4M 2011 Engine: Overview, Engine Oil Cooling, Fuel System, Engine Level 2, Checking and Adjusting Valve Tip Clearance |
| Power Train | 79-102 | Variable-Displacement Pump 12.5 Mph, Hydraulic Motor – Hydraulic Connections 12.5 Mph, Hydraulic Motor – Control Element 12.5 Mph, Power Train Circuit with Cooling 12.5 Mph |
| Axles | 103-126 | Type Decal – Axle, Front Axle Screw Connections, Rear Axle Screw Connections, Drain, Fill and Check Plug – Front Axle, Fill and Check Plug – Rear Axle |
| Brakes | 127-130 | Brake Circuit, Brake Diagram, Bleeding the Service Brake (Important Information on the Brake System, Bleeding the Brake System with Bleed Equipment), Parking Brake: Overview |
| Steering | 131-138 | 5 Mph (20 km/h) Steering Circuit, 5 Mph (20 km/h) Steering Diagram, 25 Mph (40 km/h) Steering Circuit, 25 Mph (40 km/h) Steering Diagram, Hydraulic Connections on Servostat |
| Hydraulic System | 139-156 | Test Report, Control Valve Connections (Priority Valve for Work Hydraulics and Steering), Control Valve, Work Hydraulics Circuit, Connections: Frame – Loader Unit Disconnect |
| Electrical System | 157-204 | Ohm's Law; Power, Measuring Equipment, Measuring Methods, Terminal Description, Cable Color Coding, Relays (Use, Mode of Function, Terminal Description on Relay), Fuse Box |
| Torque Specifications | 205-208 | Hydraulic Fittings with Various Seals, With Coarse-Pitch Thread, With Fine-Pitch Thread |
Quick Reference Specifications
| Specification | Value | Page |
|---|---|---|
| General tightening torque for M4 Grade 7 (8.8) | 2 lb.-ft. (3 Nm) | p. 25 |
| Hydraulic oil filter replacement interval | 1500 service hours (yearly) | p. 51 |
| Air filter cartridge replacement interval | 1500 service hours (yearly) | p. 41 |
| Fuel filter replacement interval | 1500 service hours (yearly) | p. 30 |
| V-belt deflection clearance | 0.40'' (10 mm) | p. 43 |
| Engine rated output | 44 kW/59 DIN hp at 2400 rpm | p. 17 |
| Engine Output | 59 DIN hp | p. 17 |
| Engine Max. Torque | 144 lb.-ft. | p. 17 |
| Engine Oil Capacity | 2.8 gal. (10.5 L) | p. 27 |
| Hydraulic Oil Tank Capacity | 17 gal. (65 L) | p. 27 |
| Fuel Tank Capacity | 21 gal. (80 L) | p. 27 |
| Wheel Nut Torque | 295 ±15 lb.-ft. | p. 25 |
Mustang ML 48T Common Problems This Manual Covers
Weak or stalled loader hydraulics
Low or contaminated oil, a clogged filter, or pump and valve wear leave the loader arm slow or unresponsive. The hydraulic system section covers the test report, control valve connections, and work hydraulics circuit.
Manual Section: Hydraulic System p. 139Overheating or loss of power under load
Low coolant, a clogged cooler, or a dirty air or fuel filter can leave the Deutz engine overheating or down on power. The engine section covers the F4M 2011 overview, oil cooling, and fuel system.
Manual Section: Engine p. 63Steering pulls or responds poorly
A machine that will not track straight or responds poorly to steering inputs may have a steering circuit or servostat fault. The steering section covers the 5 mph and 25 mph steering circuits and hydraulic connections.
Manual Section: Steering p. 131Spongy brakes that need bleeding
Air in the brake circuit gives a soft pedal and weak braking. The brakes section covers the brake circuit, brake diagram, and the correct service brake bleeding procedure.
Manual Section: Brakes p. 127Weak drive or power train fault
A loader slow to move or lacking drive power may have a variable pump or hydraulic motor issue. The power train section covers the variable-displacement pump and the hydraulic motor connections and control element.
Manual Section: Power Train p. 79Electrical faults, relays, or fuses
Blown fuses, failed relays, or wiring faults cause intermittent or dead circuits. The electrical section covers measuring methods, cable color coding, relays, and the fuse box.
Manual Section: Electrical System p. 157Frequently Asked Questions
Which machine does this manual cover?
It is the service manual for the Mustang ML 48T all-wheel-steer loader from 2005, part number 918139, with the Deutz F4M 2011 engine. It runs 208 pages.
Does it include torque specifications?
Yes. The torque specifications section covers hydraulic fittings with various seals and coarse and fine-pitch thread values, alongside the general and specific tightening torques. p. 205
What engine and power rating does it cover?
It covers the Deutz F4M 2011 engine, rated at 44 kW or 59 DIN hp at 2400 rpm. The engine section details the oil cooling, fuel system, and valve clearance adjustment. p. 63
Can I search the manual text?
Yes. This PDF has a text layer and bookmarks, so you can search for a spec or procedure and jump straight to the section instead of paging through the file.
How quickly can I access this Mustang ML 48T manual after buying?
You get a 208-page searchable PDF that downloads instantly after checkout. Open it on your laptop, tablet, or phone — bring it right to the shop floor.
Can I print specific sections of this Mustang ML 48T Service Manual?
None at all — the PDF is DRM-free. Print whatever sections you need to take out to the shop. Standard letter or A4 paper works.
Are hydraulic system diagrams in this Mustang ML 48T Service Manual?
Yes — complete hydraulic schematics with flow diagrams, valve configurations, and pressure specifications are included.
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