BMW R 1150 GS 1999–2003 Repair Manual (P/N 01 79 0 021 120)

This BMW Motorrad Repair Manual covers the R 1150 GS in standard condition or fitted with genuine BMW accessories. Identified as P/N 01 79 0 021 120, it was printed in Germany 02/00. Its procedures cover maintenance and repair of the factory configuration, rather than modified motorcycles.

Searchable Workshop PDF and Included Service Sheets

Text search and procedure navigation: Searchable text is available across the maintenance and repair chapters. Embedded PDF bookmarks lead to construction groups and individual procedures.

The ZIP contains one printable 311-page PDF. This total already includes the cover, publication and introductory pages, three reference sheets—maintenance schedule, pre-delivery checklist, and service data—and blank divider pages.

Engine Overhaul, Drivetrain Repair and Chassis Service

The following selected repair topics outline the manual’s coverage. Further examples include ignition-lock service and instrument-panel removal; this is not a complete contents list.

• Engine repair: Step-by-step engine removal, internal disassembly and assembly, cylinder-head repair, valve-clearance adjustment, and cam-timing procedures.

• Clutch and gearbox: Dry-clutch replacement, hydraulic clutch service, six-speed gearbox teardown, shaft and bearing work, endplay measurement, and shimming.

• Rear-wheel drive: Bevel-pinion and crown-wheel rebuilding, bearing replacement, tooth-contact checks, backlash adjustment, and swinging-arm and drive-shaft service.

• Chassis and wheels: BMW Telelever fork and bridge work, leading-link and ball-joint service, suspension-strut replacement, wheel-bearing work, balancing, and rim centering.

• Brakes and ABS: Caliper repair, master-cylinder service, ABS sensor-gap adjustment, ABS-unit and relay replacement, brake-line work, and system bleeding.

• Fuel and engine electrics: Motronic MA 2.4 component service, fuel-pump pressure testing, throttle synchronization, Hall-effect ignition timing, alternator checks, and starter repair.

• Technical references: Component-specific torque tables, lubricant data, wear limits, fits, clearances, electrical test values, engine cutaway, oil-circuit diagrams, gearbox sectional drawing, and frame overview.

Written for workshop personnel with practical and theoretical service training, this manual is suited to trained technicians and experienced mechanics. Certain tests and adjustments require BMW special tools or the MoDiTeC tester.

Scheduled Maintenance and Internal Engine Work

Group 00 combines pre-delivery procedures with the Inspection I–IV maintenance program. It covers engine, gearbox, and rear-drive oils; filters; the Poly-V belt; battery; spark plugs; brake and clutch fluids; throttle cables; and road-safety and functional checks.

The construction-group layout connects repair procedures with the inspection specifications needed to assess parts before reassembly. Cylinder-head work includes valve-seat machining and valve-guide replacement; piston and cylinder measurements, connecting-rod inspection, and crankshaft main-bearing, guide-bearing, and big-end clearance checks support internal engine assessment.

Separate lubricating-oil and cooling-oil circuit diagrams accompany coverage of the oil pumps and thermostat. Assembly instructions address the crankcase, auxiliary shaft, timing chains, crankshaft radial seals, cylinder heads, and overhead-camshaft timing.

Clutch, Gearbox and Final-Drive Detail

The single dry-plate clutch section includes the hydraulic line, master and slave cylinders, and filling and bleeding work. Gearbox procedures extend to the input, output, and intermediate shafts, selector shaft and drum, shaft seals, and final housing assembly.

Rear-drive instructions cover taper and needle bearings, housing-cover shimming, and universal-joint inspection. BMW measuring fixture 33 2 600 is referenced for tooth-contact and backlash checks.

The manual warns that allowing the gearbox to drop during separation can bend the clutch actuating rod. It also identifies the risk of damaging bearing sealing washers with pointed tools during gearbox shaft-seal removal.

Telelever, Wheel and Brake Service

Fork work includes seal replacement, tube measurements, fork-bridge bearings, and leading-link inspection. Wheel procedures include runout checks and single-spoke replacement; the manual limits spoke replacement to one spoke and explains that rim centering cannot correct radial runout.

Brake coverage includes front and rear caliper pistons and seals, handlebar brake and clutch pistons, the rear master cylinder, and ABS sensor-ring measurement. BMW specifies that work on the ABS unit must be performed by an authorized BMW workshop.

Secure the motorcycle with the specified workshop support before engine, transmission, or chassis work, and observe the manual’s fuel, battery-isolation, brake-fluid, and ABS precautions.

Motronic, Electrical Testing and Required Equipment

Fuel-system coverage addresses throttle bodies, injectors, the throttle-valve potentiometer, air-filter housing, fuel pump, pressure regulator, and oxygen sensor. The pressure-test section links a low reading to checks of the pump, filter, regulator, and fuel line.

Engine-electrics chapters distinguish the standard Denso alternator from the optional Bosch unit and cover the ignition coil, Hall-effect gate, starter, and starter relay. MoDiTeC operations are identified, but the throttle-potentiometer basic setting refers to separate Motronic diagnosis instructions rather than reproducing that tester routine.

Electrical illustrations provide relay/fuse locations and ABS wiring-harness routing views, including connections in the central electrical equipment box. These are routing and component-location references, not a complete motorcycle wiring-schematic set. BMW also identifies the parts microfiche as a separate reference.

Other specified tooling includes service stand 00 1 520 with adapters 00 1 527, clutch-housing lock 11 5 640, TDC locating pin 11 2 650, and gearbox guide pins 23 1 820.

A Preview of Fuel and Final-Drive Test Data

The fuel-pump pressure check specifies 3 ± 0.2 bar with the engine idling. Fuel-system specifications also list a delivery rate of 110 l/h at 12 V, giving separate pressure and delivery references for the pump.

For rear-drive adjustment, the manual specifies 0.07–0.16 mm tooth backlash without oil. This is distinguished from the provisional backlash used during assembly.