3-20
C - EVERY 250 HOURS OF SERVICE
Carry out the operations described previously as well as the following operations.
C1 - ALTERNATOR/FAN/CRANKSHAFT BELT TENSION
CHECK - ADJUST
- Open the I.C. engine bonnet.
- Check the belt for signs of wear and cracks and change if necessary (see: 3 - MAINTENANCE:
FILTERS CARTRIDGES AND BELTS).
- Check the belt tension between the pulleys of the crankshaft and of the alternator.
- Under a normal pressure exerted with the thumb (45 N), the belt should move approximately
10 mm.
- Carry out adjustments if necessary.
- Untighten screws 1 (fig. C1) by two to three thread turns.
- Swivel the alternator assembly so as to obtain the belt tension required.
- Retighten screws 1 (fig. C1) (tightening torque 22 N.m).
If the compressor belt has to be changed, check the tension again after the first 20 hours of operation.
C2 - COMPRESSOR BELT TENSION (OPTION AIR CONDITIONING)
CHECK - ADJUST
- Open the I.C. engine bonnet.
- Check the belt for signs of wear and cracks and change if necessary (see: 3 - MAINTENANCE:
FILTERS CARTRIDGES AND BELTS).
- Check the belt tension between the pulley of the crankshaft and of the compressor.
- Under a normal pressure exerted with the thumb (45 N), the belt should move approximately
10 mm.
- Carry out adjustments if necessary.
- Untighten screw 1 and nuts 2 (fig. C2) by two to three thread turns.
- Swivel the alternator assembly so as to obtain the belt tension required.
- Retighten screw 1 and nuts 2 (fig. C2) (tightening torque 22 N.m).
If the compressor belt has to be changed, check the tension again after the first 20 hours of operation.
C3 - FUEL WATER TRAP
DRAIN
The water trap serves to stop the water contained in the fuel, it is incorporated
within the fuel
filter.
- Open the I.C. engine bonnet.
- Place a receptacle under drain port 1 (fig. C3).
- Unscrew ring 2 (fig. C3) by two or three thread turns to drain the water from the water trap.
- Retighten ring 2 (fig. C3).
C4 - CAB VENTILATION FILTER
CHANGE
- Lift out cab ventilation filter 1 (fig. C4) and replace it with a new one (see: 3 - MAINTENANCE:
FILTERS AND BELTS).
C2
1
2
2
C4
1
C1
1
1
C3
2
1
647421 (22/08/2017)
MT-X 625 Série 2-E3 + COMFORT