AP13.20-T-1350BA | Inspect condition of V-belt, re-tension | 21.2.06 |
ENGINE 457.944 in model NMB613.358 /388
T13.20-0037-05
Shown on model 613.358 with rear axle 746.217
3 Belt pulley on alternator I
9 Tensioning device for poly V-belt A
A Poly V-belt
X Distance
T13.20-0029-05
Shown on model 613.358 with rear axle 745.997
1 Belt pulley on vibration damper
2 Belt pulley on water pump
3 Belt pulley on alternator I
4 Belt pulley on fan
5 Belt pulley on refrigerant compressor
6 Belt pulley on alternator II
7 Guide pulley for poly V-belt A
8 Tensioning device for double V-belts C and D
9 Tensioning device for poly V-belt A
10 Tensioning device for poly V-belt B
A Poly V-belt
B Poly-V-belt
C Dual V-belt
D Dual V-belt
E V-belt
T13.20-0034-05
Shown on model 613.358 except SAPTCO version with rear axle 746.217
1 Belt pulley on vibration damper
2 Belt pulley on water pump
3 Belt pulley on alternator I
4 Belt pulley on fan
5 Belt pulley on refrigerant compressor
6 Belt pulley on alternator II
7 Guide pulley for poly V-belt A
8 Tensioning device for double V-belts C and D
9 Tensioning device for poly V-belt A
10 Tensioning device for poly V-belt B
A Poly V-belt
B Poly-V-belt
C Dual V-belt
D Dual V-belt
E V-belt
T13.20-0038-05
Shown on model 613.358 SAPTCO version with rear axle 746.217
1 Belt pulley on vibration damper
2 Belt pulley on water pump
3 Belt pulley on alternator I
4 Belt pulley on fan
5 Belt pulley on refrigerant compressor
6 Belt pulley on alternator II
7 Guide pulley for poly V-belt A
8 Tensioning device for double V-belts C and D
9 Tensioning device for poly V-belt A
10 Tensioning device for poly V-belt B
A Poly V-belt
B Poly-V-belt
C Dual V-belt
D Dual V-belt
E V-belt
Modification notes
| Checking | ||
1 | Check V-belt (E), dual V-belts (C, D) and poly V-belts (A, B) for wear | Check the V-belt (E), dual V-belts (C, D) and poly-V-belts (A, B) for cracks, oil fouling and overheating. Worn and damaged V-belt (E), dual V-belts (C, D) and poly-V-belts (A, B) should be replaced subject to separate repair order. | |
2 | Check poly-V-belts (A, B) for tension | ||
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3 | Check V-belt (E) and dual V-belts (C, D) for tension | ||
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If necessary: | |||
Retension V-belt | |||
4 | Measure gap (X) between tensioning device for poly-V-belt A (9) and belt pulley of alternator I (3) | Only necessary when rear axle 746.217 is fitted. | |
If the gap (X) is less than 1 mm, the tensioning device for poly-V-belt A (9) must be replaced in order to prevent damage to the belt drive and alternator I. | |||
5 | Retighten mounting bolt at tensioning device for poly-V-belt B (10) | ||
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Inspection and setting data of multi-belt drive
Number | Designation | Engine | ||
BE13.21-N-1001-01D | V-belt tension | V-belt new | kg | 40...50 |
N | 400...500 | |||
V-belt run-in | kg | 30...40 | ||
N | 300...400 | |||
Belt tensioning device
Number | Designation | Engine 457.9 | |
BA13.25-N-1001-01I | Bolt of poly V-belt tensioning device | Nm | 60 |
000 589 64 21 00
Torque wrench
Measuring instrument
001 589 69 21 00