Installing Intake-Air Distributor

V8 naturally aspirated engine M48/01: 

1. Replace intake-air distributor gaskets.
2. Move intake-air distributor into installation position. Make sure that the gaskets do not slip out of place and that the lines are not trapped.
3. Carefully lift the rear intake-air distributor at the shift gate and connect the vacuum line under the control valve -1-  (difficult to reach, use a mirror). Connect cable plug for control valve. -2- 

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   Information  

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4. Carefully screw in screws on intake-air distributor. Screws must all fit easily. Illustration shows tightening sequence → Tightening sequence for intake-air distributor (shown on naturally aspirated engine) applies to both naturally aspirated and turbo engines   . Carefully bend line for tank ventilation out of the way in order to access the screws. Align intake-air distributor with screws tightened slightly and then tighten screws according to the tightening sequence. → Tightening torque: 15 Nm (11 ftlb.) 

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5. Clip in rear tank vent line at the wire harness. -arrow- 

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6. Fit connections on the intake-air distributor.

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   1. Connect cable plug for heat socket. -1- 
   2. Connect positive crankcase ventilation connection on heat socket. -2- 
   3. Connect cable plug for throttle housing and secure in sheetmetal clip. -3- 
   4. Connect cable connection for tank vent line on the intake-air distributor connection piece. -4- 

V8 turbo engine M48/51: 

7. Replace intake-air distributor gaskets.
8. Move intake-air distributor into installation position. Make sure that the gaskets do not slip out of place and that the lines are not trapped.
9. Fit vacuum line. -vacuum line- 

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Information 

If screws are damaged, take the intake-air distributor off again and carefully tap out the affected screws with a plastic hammer. Carefully tap in new screw elements with a plastic hammer.

10. Carefully screw in screws on intake-air distributor. Screws must all fit easily. Illustration shows tightening sequence → Tightening sequence for intake-air distributor (shown on naturally aspirated engine) applies to both naturally aspirated and turbo engines  . Carefully bend line for tank ventilation out of the way in order to access the screws. Align intake-air distributor with screws tightened slightly and then tighten screws according to the tightening sequence. → Tightening torque: 15 Nm (11 ftlb.) 

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11. Clip in rear tank vent line at the wire harness. -arrow- 

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12. Fit connections on intake-air distributor on the turbo engine in the same way as on the naturally aspirated engine. -1, 2, 3 and 4-

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