Contents: Engine M 123 ↡ Engine M 110 ↡
Sectional view of crankshaft vibration damper and pulley
1 - pulley; 2 - bolts; 3 - washers; 4 - vibration damper; 5 - pins; 6 - flange; 7 - oil seal; 8 - flange; 9 - crankshaft sprocket; 10 - segment key; 11 - crankshaft; 12 - mounting pin; 13 - cap spring; 14 - bolt
If the engine has not yet been removed from the vehicle, first perform the following operations:
1. Remove the radiator.
2. Remove the air cleaner.
3. Remove the timing chain tensioner.
4. Remove the distributor.
5. Remove the intake manifold on the M 110 engine.
6. Remove the water pump/generator drive belt.
Engine M 123
1. Move the piston of the 1st cylinder to the TDC position.
2. Loosen the bolt and remove the distributor guide cover and spacer.
3. Note the position of the groove in the drive shaft, then remove the shaft from the cylinder block using long-nosed pliers.
4. Remove the rear suspension height control hydraulic pump, where applicable.
5. Using an Allen key, remove the cover bolts from the front of the cylinder block and remove the gasket.
6. Remove the bolt from the camshaft sprocket, holding it in a stationary position with a metal rod passed through one of the holes.
7. Slide the sprocket off the chain and tie it to one side.
8. Using an Allen key, remove the pulley and vibration damper bolts from the front flange of the crankshaft.
9. Using a hammer or puller, remove the lower axle of the right chain guide through the hole in the flange and pull the guide up. If there is no hole, remove the flange.
10. Remove the bolt from the intermediate sprocket, holding it from turning with a metal rod passed through the hole in the sprocket.
11. Remove the chain limiting bolt from the left side of the cylinder block.
Removal the timing chain limiting pin
12. Push the intermediate shaft back and remove the sprocket.
13. Loosen the bearing retaining bolt and remove the washer.
14. Using a suitable bolt, pull out the intermediate shaft together with the front bearing.
15. Remove the bearing from the shaft.
Engine M 110
Removing the intermediate gear (engine M 110)
1. Use an inertial puller to remove the plug from the left side of the cylinder block.
2. Remove the oil pump drive shaft using the puller bolt.
3. Using an Allen key, remove the pulley and vibration damper bolts from the front flange of the crankshaft.
4. Unscrew the upper plug from the TDC sensor bracket, then unscrew and remove the oil pressure reducing valve.
5. Unscrew the distributor housing bolts and remove the gasket. Remove the leash.
6. While holding the intermediate gear from turning, unscrew the oil supply bolt and remove the washer.
7. Unscrew the chain limiting pin from the left side of the cylinder block.
(Article text obtained from the website: www.mercedesman.ru)
8. Tap on the intermediate hall to move it back and remove it upwards.
9. Cover the lower part of the camshaft drive with a clean cleaning cloth.
10. Loosen the bearing retaining bolt and remove the snap ring and washer.
11. Using a suitable bolt, remove the intermediate shaft together with the front bearing. Remove the bearing from the shaft.
12. If necessary, use a puller to remove the rear bearing from the cylinder block.