Massey Ferguson 340, 350, 355, 360 & 399 Tractor Shop Manual

• File and model scope: A 221-page PDF for Massey Ferguson 340, 350, 355, 360, and 399 tractors in applicable 2WD and 4WD configurations, with serial-code coverage from August 1986 through December 1993. The scan runs from printed page 5 through page 212 and contains 11 exact duplicate pages.
• Perkins engine repair: Covers the AD3.152S, turbocharged AT3.1524, A6.3544, and 1006.6 engines, including removal, cylinder-head and valve work, timing gears, pistons and sleeves, crankshaft bearings, lubrication, cooling, and Holset turbocharger service.
• Transmission overhaul: Details eight-speed standard and synchromesh units, six- and eight-speed shuttle gearboxes, and twelve-speed synchromesh and shuttle versions, with tractor splitting, transmission removal, shaft and gear service, synchronizer setup, and bearing-preload procedures.
• Axles, steering, and brakes: Maps 2WD front axles, mechanical front-wheel drive, standard, Autolock, and Hydralock differentials, hydrostatic steering, direct-drive and planetary rear axles, and the drum- versus disc-brake configurations.
• Hydraulics and PTO: Includes troubleshooting, pressure and flow testing, lift-pump and lift-cover repair, draft and position-control adjustment, auxiliary valves, steering-system bleeding, and live and independent PTO service.
• Fuel and electrical diagnosis: Provides injector testing and CAV pump timing data, Lucas and Motorola alternator service, Lucas and Perkins starter coverage, and eleven serial-specific wiring diagrams for cab, non-cab, three-cylinder, and six-cylinder tractors.

This shop manual is suited to experienced mechanics and repair shops equipped for tractor splitting, hydraulic pressure testing, injector testing, and press work. It gives repair procedures and specifications rather than basic mechanical instruction, and several jobs call for dedicated Massey Ferguson service tools or suitable equivalents.

Model and Build Identification

The serial-number section decodes machine type, production year, production week, and unit sequence. Engine coverage is separated into the AD3.152S used in the 340 and 350, the turbocharged AT3.1524 used in the 355 and 360, the A6.3544 fitted to early 399 tractors, and the 1006.6 used in late 399 tractors beginning with serial S01001 for 1991 and later. Injection-pump tables also identify engine-specific build codes and serial breaks, helping match timing and pump data to the correct engine.

Drivetrain and Chassis Repair Depth

Transmission coverage is configuration-specific: eight-speed standard for the 350, 355, and 360; eight-speed synchromesh for the 340 through 360; six-speed shuttle for the 360; eight-speed shuttle for the 340 through 360; twelve-speed synchromesh for the 350, 355, 360, and 399; and twelve-speed shuttle for the 399. Cab and non-cab splitting procedures are included. The 4WD section distinguishes conventional, Autolock, and Hydralock front differentials, early and late transfer gearboxes divided at July 1991, and the transfer unit used with the twelve-speed shuttle.

Rear-axle and brake chapters separate early 340 drum brakes from later 340 disc brakes, direct-drive 340 axles from planetary final drives, and disc-brake controls through serial V39465 from those beginning with V39466. Clutch material covers both dual and split-torque assemblies. PTO chapters handle live and independent systems, including the hydraulic clutch, brake, control valve, and pressure tests.

Hydraulics, Fuel, Electrical, and Visual References

The hydraulic section follows the main four-piston lift pump and the two-section auxiliary system through reservoir filtration, troubleshooting, testing, lift-cover removal, selector-valve work, and internal linkage adjustment. It distinguishes standard draft control from the intermix arrangement found on some 399 tractors and identifies the associated MF273, MF356C, MF445, and MF272 setup tools.

Useful illustrations include the Hydralock differential exploded view and section, the Holset turbocharger exploded view, serial-range cab and non-cab wiring diagrams, the twelve-speed shuttle exploded view and cross-section, 399 intermix and non-intermix draft-control adjustment views, and the auxiliary spool-valve exploded section. The manual supplies component-specific torque specifications, pressure-test data, capacities, clearances, wear limits, and adjustment information in U.S. customary and metric units.

The fuel chapter covers bleeding, injector fault isolation and bench testing, nozzle service, pump removal, drive timing, and application specifications. It does not provide an internal CAV injection-pump overhaul; the publication directs that sealed-pump repair be handled by trained personnel with the proper test equipment. Electrical diagrams are described as typical, and the manual notes that wiring on some tractors may differ.

Two repair cautions are especially specific. The twelve-speed shuttle upper-shaft bearing must be pressed with the proper fixture; hammer-and-punch work can cause hidden damage, seizure, and wider transmission failure. During turbocharger overhaul, the assembly must not be supported on the compressor impeller or turbine wheel because the unit's own weight can damage the blades. Tractor splitting, axle and flywheel handling, injector testing, and hydraulic pressure checks require secure support, suitable lifting equipment, and the pressure-safety practices stated in the manual.