Description

BMW 735i, 735iL, 740i, 740iL, 750iL Service Manual – 1988-1994

You’ve got a BMW 735i on the lift that won’t start. Or a 750iL with a coolant leak. You pull out a generic manual and the torque spec for the cylinder head is missing. That’s wasted time. This BMW 735i, 735iL, 740i, 740iL, 750iL Service Manual covers 1988 through 1994 – and it gives you the actual factory procedure. Not a reprint. Not a summary. The real deal from Bentley Publishers. 987 pages of OEM data you can trust on the workbench. I’ve been turning wrenches for 28 years and I’d rather use a page from this than three aftermarket websites.

Engine Overhaul: Cylinder Head Removal and Installation

Section 113 in the manual walks you through cylinder head removal and installation for the M30 and M60 engines. Page 113 shows the exact torque sequence and the angle-tighten steps for the head bolts. You get the factory spec in ft-lb, not some rounded number from a forum. The manual also covers the cylinder head and valvetrain in section 116 – including valve clearance adjustments and camshaft timing. If you skip the step-by-step procedure outlined here, you’ll be pulling the head again. It’s that specific.

7 Systems Covered – From Engine to Electrical

The table of contents shows sections for Engine-General (100), Transmission (200), Suspension and Steering (300), Body (400), Body Equipment (500), Electrical System (600), and Equipment/Accessories (700). Each section has subsections with factory torque specs, wear limits, and diagnostic routines. For example, the fuel injection system (130) gives you the flow rates and pressure tests for the Bosch Motronic setup. The electrical wiring diagrams at the back of the book cover every harness and connector for the 735i, 735iL, 740i, 740iL, and 750iL. No guesswork.

Does This Manual Cover the Fuel System?

Yes. Section 130 Fuel Injection and 160 Fuel Tank and Fuel Pump give you the complete service data. You get the fuel pump replacement procedure, injector removal, and the fuel pressure regulator specs. For the 750iL V12, there’s specific information on the dual fuel pump setup. I’ve used this manual to diagnose a no-start on a 740i – the wiring diagram in section 610 pointed me to a bad relay in thirty minutes. Try that with a Haynes manual.

Why This Manual Beats Aftermarket Copies

Bentley Publishers is the only licensed publisher of BMW service information in North America. This is the same data the dealer techs used. The manual includes warnings and cautions printed in bold – things like ‘Disconnect battery before working on airbag system’ (Section 721). Aftermarket manuals leave those out because they copy old scans. Page 1 has the full disclaimer and safety notice. You don’t get that from a PDF that’s been recopied three times. This is the original OEM print. BMW 735i 1988 Electrical Schematic – OEM Factory Manual covers the wiring if you need a standalone diagram. 1990 BMW 735i 735iL 750iL Electrical Schematic Manual is another option for the V12 models. BMW 735i, 735iL, 750iL 1988 Troubleshooting Manual – OEM Factory Specs gives you a faster diagnostic flow if you’re stuck.

Transmission and Drivetrain Specs You Can Trust

Section 200 covers transmission general data. You get the fluid capacities, fill procedures, and torque values for the drain plug and pan bolts. For the automatic (ZF 4HP22/24), section 240 has the overhaul procedure – including clutch pack clearances. Manual transmission (Getrag 260) is in section 230. Driveshaft removal is in section 260. Every bolt has a torque spec. I’ve seen stripped transmission pans because someone used a generic 20 ft-lb. The factory spec for the 740i pan bolts is 8 Nm (6 ft-lb). That matters.

FAQ

Does this manual cover the 740i V8 and 750iL V12?

Yes. The manual includes all engine variants for the 735i, 735iL, 740i, 740iL, and 750iL from 1988 to 1994. V8 (M60) and V12 (M70/M73) procedures are separate and clearly marked.

Are the wiring diagrams in color?

No. They’re black and white but clear. Every connector pin, wire color code, and splice location is labeled. Page 610 shows the component locations; the wiring diagrams are at the back.

What torque specs are provided?

Over 500 torque values for engine, transmission, suspension, brakes, and body bolts. All in ft-lb and Nm.

Can I use this manual for a 1995 740iL?

No. This manual covers only 1988-1994 model years. The 1995 models had different electrical systems and the M60B30 engine changes. Use the correct year range.

If you work on BMW 7 Series from this era, you need factory data – not a reprint from someone’s scanner. This manual has the torque specs, the wiring, and the overhaul procedures that save you from buying parts twice. I’ve had this exact book on my bench for ten years. It’s worth the space. Automotive Industry Overview and Automotive Industry Overview are external references – but for BMW, this is the one. Access the Factory Manual and get back to work.