Black Ridge BRC270, Manual

24

BELT TENSION 

Correct belt tension is paramount to a safe and reliable air 

compressor. Too tight a belt can cause damage to bearings 

and premature motor failure. These failures will not be 

covered by warranty. Too loose a belt can cause poor 

performance and excess heat due to slippage which can 

also lead to premature component failure. This will not be 

covered by warranty. To check the belt tension, gently push 

down midway between the two pulleys the belt should only 

move between 10mm – 15mm, Pic. 15. If the belt moves 

more that this amount then you will need to tighten the belt.
To adjust the belt tension, follow these simple steps;

1.  Loosen the motor bolts, Pic. 24.
2.  Slide the motor forward or backward to correct position.
3.  Tighten the motor bolts.
4.  Check belt tension and repeat if needed.
5.  If uncertain about attempting the above steps please 

consult an authorised service agent.

Belt Straightness, Pic. 25

Belt straightness is paramount to a safe and reliable air 

compressor. The belt should always run in a straight line 

between the two (2) pulleys. If the belt is on an angle this 

could cause excessive strain and wear on components. 

This will not be covered by warranty. The belt should run 

parallel to the two pulleys.  If not, adjust. To adjust the belt 

straightness, follow these simple steps;

1.  Loosen the pump bolts, Pic. 25.
2.  Slide the pump to the appropriate position.
3.  Tighten the pump bolts.
4.  Check belt straightness and repeat if needed.
5.  Check belt tension and correct if necessary.

Belt Replacement, Pic. 26

The belt will need replacing if it has been damaged, worn, or 

it has reached 200 hours of use. To replace the belt follow 

these steps;

1.  Undo and remove the belt guard twist locks, see Pic. 26. 

To remove twist locks use pliers to rotate the twist locks 

by 90° then remove.

2.  Remove the front of the belt guard.
3.  Loosen the motor bolts Pic. 15.
4.  Remove the belt.
5.  Clean both pulleys with a dry soft cloth. DO NOT USE any 

lubricants or solvents as this can damage the new belt 

by causing slippage.

6.  Fit new belt.
7.  Set correct belt tension
8.  Check the belt straightness and tension, adjust if 

required.

9.  Replace the front of the belt guard.
10. Replace then tighten the belt guard twist locks.  

To replace twist locks use pliers to rotate the twist  

locks by 90°. The replacement belt is similar to (Bosch 

Style) 13A1230.

PIC. 24

PIC. 25

Motor bolts

10 - 15mm

Pump bolts

PIC. 26

2 Twist locks on each side of the 

guard and 3 twist locks on top