1 | Camshaft |
1.1 | Camshaft sprocket |
2 | Crankshaft gear |
3 | Roller tappet |
4 | Oil spray nozzle |
5 | Guide sleeve |
6 | Push rod |
7 | Drift |
Pfeil A | Marking points |
W05.20-1012-06
3 | Roller tappet |
4 | Oil spray nozzle |
Pfeile B | Guide |
Pfeile C | Groove |
Pfeil D | Dowel pin |
W05.20-1013-05
Caution | Risk of injury to skin and eyes due to handling of engine oil. Risk of poisoning caused by swallowing engine oil | Wear protective gloves, protective clothing and safety glasses. | |
| Remove | ||
1 | Remove engine or engine with transmission | Select procedure according to design and accessibility. | |
2 | Attach engine to commercial vehicle engine-assembly stand | ||
3 | Remove front camshaft sprocket | ||
4 | Remove timing case |
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Engine 457.9 in model 374, 940, 942, 943, 958 Engine 457.9 from engine end number 036948 in model 375, 944 | |||
5 | Remove engine control/PLN unit pumps | ||
6 | Remove rocker arm assembly | ||
7 | Pull out push rods (6) | ||
8 | Rotate engine in a commercial vehicle engine assembly stand | Rotate engine through about 180° so that the roller tappets (3) detach from the camshaft (1). | |
9 | Fully tighten guide sleeve (5) on the camshaft (1) at the front | Guide sleeve | |
10 | Carefully pull out camshaft (1) | Do not damage camshaft bearings. | |
11 | Mark the roller tappet (3) relative to the crankcase | ||
12 | Push roller tappets (3) out of crankcase using a push rod (6) | ||
13 | Remove oil spray nozzles (4) | Screw drifts (7) into the crankshaft and turn crankshaft using a suitable lever. | |
Drift | |||
| Check | ||
14 | Check push rods (6) through visual inspection | For deformation or damage to the pan or the ball head. | |
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Replace corresponding push rod (6). | |||
15 | Check camshaft (1) through visual inspection | For strongly visible or clearly perceptible wear as well as for score marks or scratches. | |
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replace camshaft (1). | |||
16 | Check contact surfaces of camshaft bearings in crankcase by means of visual inspection | For strongly visible or clearly perceptible wear as well as for score marks or scratches. | |
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Replace crankcase. | |||
17 | Check user interface on roller tappet (3) by means of visual inspection | For strongly visible or clearly perceptible wear as well as for score marks or scratches. | |
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Replace roller tappets (3). | |||
18 | Check oil spray nozzles (4) by means of visual inspection | If damaged. | |
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Replace the respective oil spray nozzle (4). | |||
| Install | ||
19 | Install oil spray nozzles (4) | Screw drifts (7) into the crankshaft and turn crankshaft using a suitable lever. | |
Banjo bolt, oil spray nozzle (camshaft lubrication) to crankcase | |||
20 | Push in roller tappet (3) into the crankcase, in doing so observing the grooves (arrows C) in the crankcase and the guides (arrow B) on the roller tappets (3) | | |
Observe identification of roller tappet (3) relative to crankcase. | |||
21 | Push camshaft (1) carefully with the guide sleeve (5) into the crankcase in such a way that the marking points (arrow A) on crankshaft gear (2) and on camshaft sprocket (1.1) | Do not damage camshaft bearings. | |
Drift | |||
22 | Remove guide sleeve (5) to camshaft (1) | Guide sleeve | |
23 | Push rods (6) and insert | Ensure correct seating of the push rods (6) in the roller tappets (3). | |
24 | Install rocker arm assemblies | ||
25 | Install engine control/PLN unit pump | ||
26 | Install timing case |
| |
Engine 457.9 in model 374, 940, 942, 943, 958 Engine 457.9 from engine end number 036948 in model 375, 944 | |||
27 | Install front camshaft sprocket | ||
28 | Remove engine on commercial vehicle engine assembly stand | ||
29 | Install engine or engine with transmission |
457 589 00 14 00
Guide sleeve
403 589 02 63 00
Drift