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Please feel free to contactus Parts Sea engineers or sales for help if you have no parts No.
tse@partssea.com | sales@partssea.com
A Cummins belt drives more than just a fan, it is often referred to as an accessory belt. The fan belt rotates around a pulley attached to the flywheel to provide power to auxiliary pumps and motors such as the water pump, charger, and starter motor.
1. Drive multi-V belt
NOTE: Before making any inspections make sure the engine is shut down and all starting mechanisms are isolated. Routine belt inspection can be carried out through a suitable opening. Do not remove any guards.
Belts should be inspected daily. Check the belt for cross cracks. Transverse (widthwise) cracks are acceptable. Longitudinal (belt length) cracks crossing transverse cracks are not acceptable. If the belt is worn or damaged, replace it. Refer to Section A for belt adjustment and replacement procedures. Damage to the belt can be caused by: incorrect tension, incorrect gauge and length, misaligned pulleys, incorrect installation, poor working conditions, oil or grease on the belt side.
2. Drive toothed belt
Belts should be inspected daily. If the belt is cracked, worn, or damaged, replace it. Minor cracks are acceptable. Adjust a belt with a smooth and shiny surface, which indicates belt slippage. When the belt is installed and tightened correctly, the pulleys and belt will wear evenly. Refer to Section A for belt adjustment and replacement procedures.
Belt damage can be caused by: incorrect tension, incorrect gauge and length, misaligned pulleys, incorrect installation, poor working conditions, oil or grease on the belt.
Measure the belt tension at the center of the pulley. Refer to the belt tension chart in Section V to select the correct gauge and tension value based on the width of the belt being used. Use an alternative method (deflection method) - apply a force of 110 N [25 Ib] on the V-belt between the pulleys to check the belt tension. If the deflection per foot of pulley center distance exceeds the belt thickness, the belt tension must be adjusted. Refer to Section A for adjustment procedures.
For toothed belts, make sure the belt tension gauge is installed so that the center tension bar is directly over the apex of one tooth. Other positions will cause incorrect measurements.
3. Drive fan hub
Maintenance inspection: Remove the fan drive belt.
Check the fan hub for: free rotation, cracks, grease seal leakage, measure fan hub axial clearance. If the clearance is not within this specification, replace or reinstall the fan hub.
4. Cooling fan belt tensioner
Maintenance inspection: 3/8 inch square head wrench, 13 mm, remove drive belt. Lift the tensioner pulley to remove and install the belt. Check the belt for damage. Transverse (widthwise) cracks are acceptable. Longitudinal (belt length) cracks crossing transverse cracks are not acceptable. If the belt is cracked, worn, or damaged, replace it.
Please feel free to contactus Parts Sea engineers or sales for help if you have no parts No.
tse@partssea.com | sales@partssea.com
A Cummins belt drives more than just a fan, it is often referred to as an accessory belt. The fan belt rotates around a pulley attached to the flywheel to provide power to auxiliary pumps and motors such as the water pump, charger, and starter motor.
1. Drive multi-V belt
NOTE: Before making any inspections make sure the engine is shut down and all starting mechanisms are isolated. Routine belt inspection can be carried out through a suitable opening. Do not remove any guards.
Belts should be inspected daily. Check the belt for cross cracks. Transverse (widthwise) cracks are acceptable. Longitudinal (belt length) cracks crossing transverse cracks are not acceptable. If the belt is worn or damaged, replace it. Refer to Section A for belt adjustment and replacement procedures. Damage to the belt can be caused by: incorrect tension, incorrect gauge and length, misaligned pulleys, incorrect installation, poor working conditions, oil or grease on the belt side.
2. Drive toothed belt
Belts should be inspected daily. If the belt is cracked, worn, or damaged, replace it. Minor cracks are acceptable. Adjust a belt with a smooth and shiny surface, which indicates belt slippage. When the belt is installed and tightened correctly, the pulleys and belt will wear evenly. Refer to Section A for belt adjustment and replacement procedures.
Belt damage can be caused by: incorrect tension, incorrect gauge and length, misaligned pulleys, incorrect installation, poor working conditions, oil or grease on the belt.
Measure the belt tension at the center of the pulley. Refer to the belt tension chart in Section V to select the correct gauge and tension value based on the width of the belt being used. Use an alternative method (deflection method) - apply a force of 110 N [25 Ib] on the V-belt between the pulleys to check the belt tension. If the deflection per foot of pulley center distance exceeds the belt thickness, the belt tension must be adjusted. Refer to Section A for adjustment procedures.
For toothed belts, make sure the belt tension gauge is installed so that the center tension bar is directly over the apex of one tooth. Other positions will cause incorrect measurements.
3. Drive fan hub
Maintenance inspection: Remove the fan drive belt.
Check the fan hub for: free rotation, cracks, grease seal leakage, measure fan hub axial clearance. If the clearance is not within this specification, replace or reinstall the fan hub.
4. Cooling fan belt tensioner
Maintenance inspection: 3/8 inch square head wrench, 13 mm, remove drive belt. Lift the tensioner pulley to remove and install the belt. Check the belt for damage. Transverse (widthwise) cracks are acceptable. Longitudinal (belt length) cracks crossing transverse cracks are not acceptable. If the belt is cracked, worn, or damaged, replace it.