Atlas Copco — Belt exchange/tensioning
Maintenance · V-belt(s)
From a Atlas Copco owner's manual covering: SF 1, SF 11, SF 15, SF 2, SF 4, SF 6, SF 8. Check it applies to your exact model before use.
Browse Atlas Copco generators & specs →
Before you start
- In case of two belts, the belts must be replaced as a set, even if only one seems worn. Use Atlas Copco belts only.
Procedure
- Loosen motor hold-down bolts (3).
- Loosen the belt tension by screwing bolts (4) equally and take out the belts.
- Install new belts in the grooves of the pulleys.
- Tension the belts by screwing bolts (4) equally. Make sure the pulleys remain aligned.
- Tighten bolts (3).
- Check the belt tension after the first 500 running hours.
Specs & values
- Tension is correct if deflection is between 5 mm and 7 mm when exerting a force of 25 N on the belt midway between the pulleys
- Maximum parallel out-of-line: 0.5 mm
- Maximum angular out-of-line: 0.5 degrees
Source: Atlas Copco owner's manual. Steps and values are as documented; always cross-check against the official manual and any later revisions for your exact serial number before servicing.