A | Drive belt diagram w/o air conditioning |
B | Drive belt diagram w/ air conditioning |
1 | Anti-vibration pulley |
2 | Alternator's pulley |
3 | Coolant pump's pulley |
4 | Belt tensioner |
5 | Poly-V belt |
6 | Idler pulley (for air conditioning) |
7 | Pulley (Air conditioning compressor) |
8 | Securing the propeller to the coupling: |
- Screws, engines 906 | |
- Nuts, engines 924 | |
9 | Nuts attaching the fan clutch (viscous) to the engine |
10 | 15 mm socket |
B13.22-0025-06
| Remove | ||
Warning | Risk of injury caused by body parts being pinched or crushed as cab is tilted | Ensure that no one is within the tilting range of the cab as it is being tilted. Always tilt the cab all the way to the end position and secure it with the safety strut. | |
Warning | Risk of injury caused by pinching and crushing when opening and closing engine hood | No one should be within the swivel range of the engine hood as it is being opened or closed. Always open engine hood all the way to the end position until this engages in the front locks. | |
1.1 | Tilt the cab | Cab 693.8 | |
Tilt cab to repair position, tilt back. | |||
1.2 | Tilt the engine hood | Cab 384, 695 | |
Opening engine hood, moving to upright position and closing. | |||
1.3 | Open the engine access cover | Bus | |
For buses, the access to carry out maintenance and repair jobs vary according to body type/make. | |||
Refer to the body makers instructions. | |||
2 | Turn the tensor (4) clockwise and remove the belt (5) | Use a power cable with 15 mm socket (10). | |
3 | Remove the bolts or nuts (8) and nuts (9) and displace the viscous fan clutch to the cooler side | Before removing the bolts (8), mark the position relative between the fan and viscous clutch. | |
Careful in order not to damage the radiator and the viscous coupling. | |||
4 | Lift out the drive belt (5) | ||
| Check | ||
5 | Check the drive belt (5) for condition | ||
| Damage profiles for a poly-V belt | . | |
If necessary replace it. | |||
6 | Check the condition of the pulleys (1, 2, 3, 4, 6, 7) for eventual damages and/or wear | Remove/install belt pulley/vibration damper | |
Remove/install coolant pump. | |||
Remove/install poly-V belt tensioning device. | |||
In the case of damages and/or wearing, replace: | |||
| Install | ||
7 | Install the drive belt (5) on all pulleys, except on the stretcher (4) | Observe the belt scheme. | |
8 | Turn the tensor (4) clockwise and install the belt (5) on the tensor (4) | Use a power cable with 15 mm socket (10). | |
9 | Check the perfect seating of the drive belts on the pulleys and tensioner | ||
Warning | Risk of injury caused by body parts being pinched or crushed as cab is tilted | Ensure that no one is within the tilting range of the cab as it is being tilted. Always tilt the cab all the way to the end position and secure it with the safety strut. | |
10 | Correctly position the viscous clutch on the fan and on the engine and install the nuts (9) and the screws or nuts (8) | The propeller has to be installed on the viscous clutch, observing the marking made earlier. Otherwise the balance of the assembly will be compromised. | |
.Fastening of the fan coupling (viscous) | |||
.Fastening of the fan propeller to the fan coupler (viscous) | |||
Warning | Risk of injury caused by pinching and crushing when opening and closing engine hood | No one should be within the swivel range of the engine hood as it is being opened or closed. Always open engine hood all the way to the end position until this engages in the front locks. | |
11.1 | Return the cab | Cab 693.8 | |
Tilt cab to repair position, tilt back. | |||
11.2 | Return the engine hood | Cab 384, 695 | |
Opening engine hood, moving to upright position and closing. | |||
11.3 | Close the engine access cover | Bus | |
For buses, the access to carry out maintenance and repair jobs vary according to body type/make. | |||
Refer to the body makers instructions. |
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