Complete Workshop Manual for BMW M62/M62TU V8 Engines. Essential technical documentation for the M62 engine family, widely used in the BMW 5-Series (E39), 7-Series (E38), and X5 (E53). Contains all factory specifications, tightening torques, and step-by-step instructions for engine disassembly and reassembly. Covers everything from routine maintenance to full engine overhaul, ensuring service accuracy.
| Password For Document: bimmer-service.com | |
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| Characteristic | M62B35 | M62B44 / M62TUB44 | M62B46 (Alpina/Special) |
| Configuration | V8 | V8 | V8 |
| Displacement | 3498 cc (3.5L) | 4398 cc (4.4L) | 4619 cc (4.6L) |
| Valvetrain | DOHC, 4 valves per cylinder | DOHC, 4 valves per cylinder | DOHC, 4 valves per cylinder |
| VANOS (Variable Timing) | No (Non-TU) | M62TU: Yes (Double VANOS) | M62TU: Yes (Double VANOS) |
| Power Output (Approx.) | 235 hp (173 kW) |
282 hp(210 kW) - Non-TU |
340 hp (250 kW) |
| Torque Output (Approx.) | 345 Nm | 440 Nm - TU Version | 480 Nm |
| Block Material | Aluminum | Aluminum | Aluminum |
| Production Years | 1996 – 2005 | 1996 – 2005 | Used in E53 X5, Z8 |
| Notable Vehicles | E39 535i, E38 735i | E39 540i, E38 740i, E53 X5 4.4i | E53 X5 4.6is |
BMW M62 Engine: Common Issues and Failure Points
1. Timing System Failures (M62TU with VANOS)
| Fault | Description & Consequence |
| VANOS Seals & Solenoids | The seals inside the VANOS units (only on the M62TU version) degrade over time, leading to oil pressure loss and inability to properly adjust valve timing. |
| VANOS Symptoms | Loss of low-end torque, rough idle, poor fuel economy, and rattling noises on startup. Requires rebuilding or replacement of the VANOS units. |
| Timing Chain Guides | The plastic timing chain guides become brittle and crack due to heat and age. Fragments enter the oil pan, and the chain loses tension. |
| Timing Chain Guide Failure Consequence | If left unaddressed, the timing chain can jump a tooth or completely fail, resulting in catastrophic engine damage (bent valves). This is a major, labor-intensive repair. |
2. Major Oil Leaks
| Fault | Description & Consequence |
| Valley Pan Gasket | The gasket beneath the intake manifold, known as the valley pan, fails and leaks coolant (or oil) down the back of the engine. |
| Oil Separator / CCV System | The crankcase ventilation (CCV) system, which manages oil vapors, can clog or fail. On the M62, this is integrated into the valve cover, leading to excessive oil consumption or oil leaks. |
| Valve Cover Gaskets | The gaskets around the valve covers on the V8 engine are prone to hardening and failing due to high heat, causing oil to leak onto the exhaust manifolds. |
3. Cooling System Weaknesses
| Fault | Description & Consequence |
| Thermostat | The electronically controlled thermostat can fail (often stuck open or closed), causing inefficient engine warming or overheating. |
| Cooling System Components | Like most older BMWs, the plastic radiator, expansion tank, and hoses become brittle and prone to cracking, leading to sudden coolant loss and risk of overheating. |