B13.21-0019-09
1 Alternator/water pump belt
2 Air compressor belt
3 Engine belt to the tensioning pulley
3a Tensioning pulley belt to the fan
4 Anti-vibration pulley
5 Intermediate pulley
6 Water pump pulley
7 Alternator pulley
8 Tensioning pulley
9 Air compressor pulley
10 Tensioner pulley
11 Fan belt
12 Bolt
13 Adjustment nut
14 Bolts
15 Adjustment nut
16 Nut
17 Adjustment nut
18 Counter-nut
| Remove | ||
Danger! | Risk of injuries and damage to the materials when running the engine with the gearbox engaged. Risk of injuries when performing works with the engine heated and running. | Make sure that the gearbox is in the neutral position. Use proper clothes ad pay attention to the engine's moving and heated parts. | |
Danger! | Safety measures to perform maintenance services in the gas engine. | ||
1 | Turn the general switch off or disconnect the battery negative cable. | ||
2 | Open the engine compartment lid. | Check the body manufacturer instructions. | |
3 | Remove the drive belts (3/3a) from the fan. | Release the counter-nut (18) and the nut (16). Through the adjustment nut (17), loosen the belts (3/3a) and remove them. | |
4 | Remove the drive belt (2) from the air compressor. | Release the bolts (14). Through the adjustment nut (15), loosen the belt (2) and remove it. | |
5 | Remove the drive belt (1) from the water/alternator pump. | Release the bolt (12). Through the adjustment nut (13), loosen the belt (1) and remove it. | |
| Check | ||
6 | Check the belts state (1/2/3/3a). | Replace them in the case of damages, wearing, dryness, cracks , contamination with oil or traces of overheating. | |
7 | Check the belts pulleys (4/5/6/7/8/9/10/ 11). | Clean the pulleys eliminating eventual signals of corrosion. Replace them in the case of wearing/damages. | |
| Install | ||
8 | Install the drive belt (1) in the water/alternator pump. | Assemble the belt (1) in the pulleys (4, 6 and 7) and tension it through the adjustment nut (13) until the recommended value is reached. Tighten the bolt (12). | |
| |||
| |||
| |||
9 | Install the drive belt (2) in the air compressor. | Assemble the belt (2) in the pulleys (6, 8 and 9) and tension it through the adjustment nut (15) until the recommended value is reached. Tighten the bolts (14). | |
| |||
| |||
10 | Install the drive belts (3/3a) of the fan. | Assemble the belt (3) in the pulleys (5 and 10), the belt (3a) in the pulleys (10 e 11) and tension them through the adjustment nut (17) until the recommended value is reached. Tighten the nut (16) and the counter-nut (18). | |
| |||
Nut tightening (16). | |||
|
Multi-belt drive
Número | Denominação | Engine 376.919 | |||
BE13.21-B-1001-01B | Belt tension. obtained with the measuring device (water pump/alternator belts) | New belt | kg | 40...50 | |
Used belt | kg | 30...40 | |||
BE13.21-B-1002-01B | Belt tension. obtained with the measuring device (fan belts) | Belt tension. obtained with the measuring device (using NEW BELT) | N | 530 | |
Belt tension. obtained with the measuring device (using USED BELT) | N | 400...450 | |||
Compressor
Número | Denominação | Engine 372.9 , 374.9, 376.9, 377.9 | |||
BE13.30-B-1005-01B | Drive belt | Drive belt flexing, between pulleys, when pressed with thumb | mm | 20 | |
Tension obtained with the measuring device | kg | 30...40 | |||
Belt tensioning device
Generator
Número | Denominação | Engine 372.9, 374.9, 376.9, 377.9, 386.9 | |||
BA15.40-B-1003-01A | Alternator to the support | M10 | Nm | 40 | |
M12x1.5 | Nm | 60 | |||
001 589 69 21 00
Measurement device
Referenced documents
- ap1320b135001a Retension V-belt
- ap1320b135001b Retension V-belt
- as0000b000501a Risk of accident from vehicle starting off by itself when engine running. Risk of injury (bruises and burns) resulting from working on the engine while it is being started or when it is running.
- as0000b001501a Risk of explosion from pressurized spray cans