1988-1994 BMW 7 Series 735i, 735iL, 740i, 740iL, 750iL Service Manual
BMW Models Covered & Key Technical Specifications
Models: BMW 735i, 735iL, 740i, 740iL, 750iL
Sub-models / Variants: 6-cylinder (M30), 8-cylinder (M60), 12-cylinder (M70)
Model Years: 1988–1994
Technical Data:
- Engine 3.5L (M30) Compression Ratio: 9.0:1
- Engine 4.0L (M60) Compression Ratio: 10:1
- Engine 5.0L (M70) Compression Ratio: 8.8:1
- Spark Plug Tightening Torque (M30): 30 Nm (22 ft-lb)
- Spark Plug Tightening Torque (M60/M70): 23 Nm (18 ft-lb)
- Cylinder Head Cover Torque: 10 Nm (89 lb-in)
- Engine Oil Drain Plug (M12): 25 Nm (18 ft-lb)
- Engine Oil Drain Plug (M22): 60 Nm (44 ft-lb)
- Final Drive Filler Plug: 70 Nm (52 ft-lb)
- Wheel Hub Nut: 100 ± 10 Nm (74 ± 7 ft-lb)
- Engine Mount Torque (M10): 47 Nm (35 ft-lb)
- Coolant System Capacity (735i/iL): 12.5 liters (13.2 US qt.)
BMW Manual Features & Content Preview
BMW 7 Series 1988–1994 Technical Manual: Diagrams & Tables
- Covers the 1988–1994 BMW 7 Series (735i, 735iL, 740i, 740iL, and 750iL), detailing M30, M60, and M70 engine variants.
- Official Bentley Publishers resource featuring maintenance schedules, electrical systems, and descriptive repair documentation for the E32 chassis.
- Features 15 comprehensive specification tables detailing tightening torques, lubrication capacities, and engine components.
- Delivered as an instant download. The high-resolution PDF is ready for your device the moment payment clears.
- Optimized for the shop floor, preserving exploded-view diagrams without pixelation or loss of detail.
Maintenance and Diagnostic Layout
This manual breaks down routine maintenance and outlines fundamental repair workflows for the 1988–1994 BMW 7 Series. It matches service intervals directly to the BMW Service Indicator system. You will find the exact technical parameters required for Inspection I and II. Coverage spans essential upkeep like oil services, air filter swaps, and cooling system maintenance across the M30, M60, and M70 platforms. Dedicated sections map out fuel delivery, ignition, and emissions. This layout takes the guesswork out of troubleshooting the DME and Motronic management systems. Because handling older electrical systems and heavy drivetrain components carries inherent physical risks, always verify jack stand placement and wear proper personal protective equipment before beginning mechanical work.
Engine Specifications and Factory Data
Factory data forms the backbone of this guide. It documents precise engine configurations, including output ratings up to 296 HP for the 5.0L M70 V12. Technicians get exact torque values for critical fasteners like engine mounts, cylinder heads, and drain plugs. The reference material clearly breaks down fluid capacities and types for brakes, power steering, and transmissions across all production batches. For electrical diagnostics, mechanics can rely on specific sensor reference values and pinout logic designed for digital multimeter testing. Key technical specs are positioned for quick access. Spark plug gaps are strictly defined at 0.7–0.8 mm for the M30 and M70. Coolant capacity clocks in at 15 liters for the 9/90-onward 750iL. Standard M8 class 8.8 bolts require a 47 Nm tightening torque. Ultimately, this official publication stands as the definitive resource for E32 6-cylinder, 8-cylinder, and 12-cylinder powertrain builds.
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