Manitou MT 1440 E3 - Periodic Maintenance (250 - 1000 Hours)

3-20
C - EVERY 250 HOURS SERVICE
Carry out the operations described previously as well as the following operations.
C1 - ALTERNATOR BELT TENSION
CHECK - ADJUST
- Open the I.C. engine bonnet.
- Unscrew the fastening screws 1 (fig. C1/1).
- Lay down the protective guard 2 (fig. C1/1).
- 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 3 (fig. C1/2) with two to three thread turns.
- Swivel the alternator assembly so as to obtain the belt tension required.
- Retighten screws 3 (fig. C1/2) (tightening torque 22 N.m).
- Refit the protective casing.
If the alternator 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
C3 - ALTERNATOR BELT TENSION (AIR CONDITIONING OPTION)
CHECK - ADJUST
- Open the I.C. engine bonnet.
- Unscrew the fastening screws 1 (fig. C2/1).
- Lay down the protective guard 2 (fig. C2/1).
After adjusting the compressor belt, you must carry out the adjustment of the alternator belt.
COMPRESSOR BELT
- 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 compressor.
- Under a normal pressure exerted with the thumb (45 N), the belt should move approximately
10 mm.
- Carry out adjustments if necessary.
- Untighten screws 3 (fig. C2/2) by two to three thread turns.
- Swivel the compressor assembly so as to obtain the belt tension required.
- Retighten screws 3 (fig. C2/2) (tightening torque 22 N.m).
ALTERNATOR BELT
- 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 alternator and the compressor
- Under a normal pressure exer ted with the thumb
(45 N), the belt should move approximately
10 mm.
- Carry out adjustments if necessary.
- Untighten screws 4 (fig. C2/3) by two to three
thread turns.
- Swivel the alternator assembly so as to obtain
the belt tension required.
- Retighten screws 4 (fig. C2/3) (tightening
torque 22 N.m).
- Refit the protective casing.
If the compressor belt has to be changed, check the
tension again after the first 20 hours of operation.
C1/1
1
1
2
C1/2
3
3
3
C2/1
1
1
1
2
C2/2
3
3
C2/3
4
4
4