Safety Warning
DIY auto repair can cause serious injury, fire, or vehicle damage. These guides are for informational purposes only. Always follow OEM torque specs, wear PPE, and consult a certified mechanic if you are unsure. You are solely responsible for your safety.
Fastener Tightening Specifications
| Component | Fastener Size | Nm | ||||
|---|---|---|---|---|---|---|
| Bevel Box to Transmission Bolt (2) | - | 40 | ||||
| Drive Axle Heat Shield to Bevel Box Bolt (2) | - | 25 | ||||
| Drain Plug to Transmission | - | 45 | ||||
| Mechatronic Cover Bolt (1) | - | 10 | ||||
| Oil Filter Housing | - | 20 | ||||
| Oil Pump Cover Bolt (1) | - | 8 | ||||
| Overflow Tube to Transmission | - | 3 | ||||
| Selector Shaft Lever to Selector Shaft Nut | - | 20 | ||||
| Transmission Oil Cooler to Transmission Bolt | - | 20 + 90° | ||||
| Transmission Input Speed and Clutch Oil Temperature Sensor Bolt | - | 10 | ||||
| Wire Bracket to Mechatronic Cover Nut | - | 10 | ||||
| Selector Mechanism, through 02.09 | ||||||
| Bolt (with Spring) to Selector Mechanism | - | 3 | ||||
| Selector Housing to Body/Selector Mechanism Nut | - | 9 | ||||
| Selector Lever Cable Adjustment Bolt | - | 13 | ||||
| Selector Mechanism to Body Nut | - | 8 | ||||
| Selector Mechanism, from 03.09 | ||||||
| Selector Housing to Body Nut | - | 8 | ||||
| Selector Lever Cable Adjustment Bolt | - | 13 | ||||
| Selector Mechanism with Selector Lever and Selector Lever Cable to Body Bolt | - | 8 | ||||
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Mechatronic Unit Bolt Tightening Sequence and Specification
-- Install new bolts -1 through 10- hand tight.
-- Tighten the bolts in the specified sequence to 5 Nm + 90° (1/4) additional turn.
Oil Pump Bolt, Variety and Tightening Specification
All 4 bolts with a flat heads
-- Tightening specification: 5 Nm + 90° (1/4) additional turn
3 bolts have a flat head, the upper bolt is countersunk
Tightening specification:
- Countersunk bolt: 8 Nm without tightening angle (tighten using special wrench, long reach -T10054-)
- Flat head bolts: 8 Nm + 90° (1/4) additional turn
Bevel Box to Transmission Bracket Bolt Tightening Sequence and Specification (R32 models only)
-- Install the bolts -1 and 2- by hand.
-- Follow the installation sequence:
- Tighten the bolts -1- first to 3 Nm.
- Tighten the bolts -2- to 35 Nm.
- Then, tighten the bolts -1- to 45 Nm.
NO RELATED
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When to See a Mechanic
Stop DIY work and contact a certified mechanic immediately if any of the following apply:
- • You smell fuel, burning insulation, or see smoke.
- • Brakes feel soft, pull hard to one side, or make grinding noises.
- • The engine overheats, stalls repeatedly, or misfires under load.
- • You are missing required tools, torque specs, or safe lifting equipment.
- • You are not confident in the next step or safety outcome.