Deutz FL 912, B/FL 913/C Diesel Engine Workshop Manual (P/N 0297 9763)

• Coverage is engine-code specific: F3L, F4L, F5L, and F6L 912; F3L, F4L, and F6L 913; BF4L and BF6L 913; BF6L 913C; plus separate 914 material for F3L through F6L 914, BF3L and BF4L 914/T, and BF6L 914 C/T engines.
• Checking and adjustment procedures cover valve clearance, compression pressure, top dead center, commencement of fuel delivery, injector testing, injection-pump checks, and exhaust-thermostat adjustment.
• Internal component repair includes the crankcase and cylinder seats, idler gear bearing, crankshaft, mass-balancing gear, connecting rods, pistons and cylinders, cylinder heads, valves, guides, seats, camshaft, rocker assembly, injection equipment, and cooling blower.
• Complete 912/913 engine disassembly and reassembly is organized from teardown through crankshaft bearings, camshaft, injection and oil pumps, cylinder units, valve gear, cooling-air ducting, manifolds, filters, starter, alternator, and final assembly.
• The separate 914 work-card section adds cylinder-head and crankcase resurfacing, piston-crown-clearance measurement, crankshaft-seal replacement, oil-cooler cleaning, turbocharger service, blower overhaul, vibration-damper checks, and starter-ring-gear replacement.
• Factory reference data includes component-specific torque tables, engine dimensions and configuration data, injection and lubrication test specifications, valve and cylinder-head measurements, bearing and crankshaft limits, piston and ring wear data, and adjustment specifications.
• A 763-page PDF manual set: 425 pages for the multilingual FL 912/B/FL 913/C workshop manual, five separator pages, and 333 pages for the English 914 workshop manual. The 912/913 publication carries printed DEUTZ document code 0297 9763.

Confirm the Engine Family Before Starting

This PDF combines two distinct workshop manuals. The first covers the air-cooled FL 912 and B/FL 913/C families in German, English, French, and Spanish. The second is an English-language 914 manual with its own technical-data section and numbered work cards. The material is suited to qualified diesel technicians and experienced engine rebuilders who have the measuring equipment, engine stand, and special tools specified in the procedures.

Model coverage is not a blanket “F3L through BF6L” range. The 912 section includes four naturally aspirated cylinder-count versions, while the 913 tables omit an F5L configuration and identify the turbocharged BF4L/BF6L engines separately. The 914 data likewise distinguishes naturally aspirated F3L-F6L engines from BF3L/BF4L 914/T and BF6L 914 C/T configurations. Those distinctions matter when selecting injection, piston-clearance, cooling, and torque data.

Fuel, Timing, and Compression Work

The 912/913 checking section provides illustrated factory procedures for compression testing, locating top dead center, setting commencement of delivery, evaluating injectors, checking the injection pump, and adjusting the exhaust thermostat. The 914 work cards expand that coverage with two commencement-of-delivery methods: one using a positioning bolt and another using a high-pressure hand pump. Injector removal, opening-pressure and leakage checks, fuel-line replacement, injection-pump removal, and intermediate-gear inspection are handled as separate jobs.

Useful illustrations include the valve-clearance adjustment schematic and work-card graphics for compression testing, TDC location, piston-crown-clearance measurement, fuel-delivery timing, crankshaft-seal installation, and cooling-blower disassembly.

Internal Repair and Rebuild Scope

This is substantially deeper than an operation or routine-maintenance handbook. The component sections address crankcase and cylinder-seat repair, crankshaft inspection, connecting-rod and piston checks, cylinder-head resurfacing, valve-guide and valve-seat work, starter-ring-gear replacement, camshaft service, and the mass-balancing gear. The 912/913 material then follows complete engine teardown and reassembly, including BF4L 913 oil-cooler and turbocharger removal/refitting and shaft-seal replacement at both ends of an assembled engine.

The repair notes flag mistakes that can damage parts. Bending injection lines can create fine cracks and shorten their service life. Crankshaft-seal installation also depends on the specified lip direction and tool-controlled depth; reversing the seal or placing it on the wrong running surface can damage the seal and lead to leakage.

Measurements, Tools, and Scope Limits

The special-tool listings identify equipment by number and purpose, including TDC setting device 100 640, magnetic graduated disc 100 910, cylinder-seat refacing device 150 020, piston-cooling-nozzle alignment tool 151 100, valve-seat machining tools 122 460/122 461/122 463, and engine stands 6066/6067 with their clamping hardware.

Routine operating instructions, maintenance schedules, and parts ordering remain in separate DEUTZ operation manuals and parts catalogs. This set is also not a machine-specific electrical manual: its electrical repair coverage is limited mainly to starter and three-phase-alternator removal/refitting in the 914 section, not equipment wiring diagrams. Observe the manual's shutdown, restart-prevention, ventilation, lifting, and rotating-component safety requirements before beginning repair work.