SM01.40-W-0002B | Replace sealing ring of the screw plug on the front of the crankcase | 4.2.09 |
ENGINE 457.9 in MODEL 375, 940, 942, 943, 944, 958 except CODE (MZ5) Electromagnetic fan drive (Linnig clutch)
W20.40-1057-06
1 Bracket
2 Belt pulley on fan
3 Alternator belt pulley
Arrows Screwdriving
W01.40-1071-09
14 Cover
15 Belt pulley for fan drive
18 Sealing ring
19 Splash ring
16 Belt pulley/vibration damper
17 Screw plug
Modification notes
| Remove/install | ||
| Notes on self-locking nuts and bolts | ||
1 | Remove fan | ||
Danger! | Risk of injury caused by pinching or crushing when working on springs or spring bodies that are under load | Use only approved tensioning devices; shield off hazard area if necessary. | |
2 | Release tension on generator poly-B-belt and remove from generator belt pulley (3) | Installation: Inspect condition of poly-V-belt of alternator, replace if necessary. Observe damage profiles and routing diagram for poly-V-belt. | |
Routing diagram of poly V-belt | |||
| Damage profiles for poly-V belt | ||
3 | Remove bracket (1) for fan drive | Installation: Observe different bolt lengths (arrows). | |
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4 | Detach oil filler line at oil pan and fan surround | ||
5 | Remove the cover (14) of the belt pulley of the fan drive (15) | ||
6 | Attach rotating device to timing case | ||
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7 | Detach the belt pulley of the fan drive (15) from the belt pulley/vibration damper (16) | Installation: Check belt pulley of fan drive (15) for wear, replace if necessary. | |
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8 | Take off belt pulley/vibration damper (16) | Use turning device to block the flywheel. | |
Installation: Check belt pulley/vibration damper (16) for wear, replace if necessary. | |||
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9 | Remove the slinger (19) | Installation: The slinger (19) must be installed with the flat side towards the belt pulley/vibration damper (16). | |
10 | Remove screw plug (17) | Installation: Remove sealant on the screw plug (17) and on the thread in the crankcase. Replace sealing ring (18) and tighten screw plug (17) without sealant. | |
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11 | Install in the reverse order | ||
Danger! | Risk of accident caused by vehicle starting off by itself when engine is running. Risk of injury caused by contusions and burns during starting procedure or when working near the engine as it is running | Secure vehicle to prevent it from moving by itself. Wear closed and snug-fitting work clothes. Do not touch hot or rotating parts. | |
12 | Start engine and carry out engine test run, check screw plug (17) for leaks | ||
13 | Turn off engine |
Crankcase, timing case cover, end cover
Number | Designation | Engine | |||
BA01.40-N-1008-01U | Screw plug, longitudinal oil duct to crankcase | M221.5 | Nm | 100 | |
Timing case
Number | Designation | Engine 457.9 | |
BA01.60-N-1001-01M | Bolt connecting inspection hole cover to timing case | Nm | 25 |
BA01.60-N-1003-01M | Bolt, turning device to timing case | Nm | 25 |
Flywheel, driven plate, vibration damper, starter ring gear
Number | Designation | Engine | ||
BA03.30-N-1002-01F | Bolt, vibration damper to crankshaft | Nm | 200 | |
BA03.30-N-1005-01F | Bolt, belt pulley of the fan drive to vibration damper | Nm | 30 | |
Fan, fan clutch
Number | Designation | Engine | |
BA20.40-N-1004-01L | Bracket, fan drive to cover of camshaft sprocket/cylinder crankcase | Nm | 60 |
Cranking device
904 589 04 63 00