14-450 Removal and installation of intake manifold, replacement of gasket
 
 

 
 
Removal
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1 Remove air cleaner (09—400).
 
 
2 Unscrew fastening nuts (arrow) on exhaust flange.
 
 

 
 
3 Unscrew engine oil feed line (1) on turbocharger and fastening clamp.
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4 Unscrew pressure line to switchover valve on intake manifold.
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14.8-450/1 F2
 
 

 
       

 

       
 

 
 
5 Unscrew fastening bracket (arrow) for oil pipe of automatic transmission.
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6 Loosen engine oil line (arrow) on oil filter and fastening clamp for engine oil line on cylinder head. On model 126, remove center part of partition for better access.
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7 Unscrew supporting bracket for exhaust manifold on engine carrier.
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8 Unscrew fastening nuts for intake manifold and exhaust manifold, remove intake manifold and exhaust manifold together with exhaust gas turbocharger.
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14.8-450/2 F2
 
 

 
       

 

     
 

 
 
9   Clean intake manifold and exhaust manifold. Check flange surfaces with straightedge and refinish on surface plate, if required.
10   When replacing intake manifold or exhaust mani­fold, unscrew all unscrewable parts and mount on new parts.
 
 

 
 
Installation
 
 

 
 
11    For installation proceed vice versa using new gasket and new exhaust nuts.
12   Adjust throttle linkage (30-300).
13   Adjust idle speed (07.1-100).
 
 

 
 
14.8-450/3 F2