SAINT-GOBAIN Norton Clipper BLOCKBUSTER BBM307, Owner'S Manual

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OwnersManual-MasonrySaw-BBMSeries-Rev09-2023
4. Loosen the four bolts fastening the motor, only enough to move the cutting head. This must be
done by loosening the nuts underneath the cutting head.
5. The Z shaped bracket that tension the motor needs to be loosened. Do this by loosening the bolt.
6. Push the motor towards the blade shaft. If the motor does not move forward enough to remove the
belt loosen the bolt from step #4 further correctly before reinstalling the underside shield and belt
guard.
7. Install the new belt and perform steps mentioned before but in reverse.
8. Check the belt tension correctly before reinstalling the underside shield and belt guard.
Bent Tensioning
Over time the BBM158 belts will need to be re-tensioned. This is a normal maintenance item that
must be performed with any machine utilizing v-belts. With usage the v-belts will stretch and wear
which increases the length of the belt and decreases the belt tension.
1. Unplug the saw.
2. Remove the belt guard (see Figure 5-1: Tensioning Bolt and Belt Guard).
3. Remove the shield located underneath the cutting head (see Figure 5-2: Underside Shield
Location).
4. Loosen the four bolts fastening the motor, only enough to move the cutting head. This must be
done by loosening the nuts underneath the cutting head.
5. The Z shaped bracket that tension the motor needs to be tightened. Do this by tightening the Bolt
to Tension the motor (turn clockwise).
6. Pull the motor towards the rear pf the machine (away from the blade shaft) until there is about 3/8”
movement up and down at the center of the drive belt.
7. Install the new belt and perform steps mentioned before but in reverse.
8. Check the belt tension correctly before retightening all hardware, reinstalling the underside shield
and belt guard.
Main Causes of Belt Failures:
Premature Belt failure can be attributed to the following issues: Tension (too much or too little), Pulley
Misalignment, Damaged Pulleys, Improper Handling or Storage, Incorrect Blade Specification for Material
Being Cut, and Cutting Too Deep.
Symptom Possible Cause Corrective Action
Belt Breakage
Too Much Tension Re ‐ tension Belts
Excessive Shock Load Reduce Load/ Check Blade Specification
Pulley Out Of Round Replace Pulley
Burning of Belt
Too Little Belt Tension Increase Belt Tension
Excessive Load
(Cutting Full Depth)
For Best Performance Only Cut only 1 ‐ /2” to 2” Per Pass
Containments On Belts Replace Belts and Find Source of Containments
Incorrect Blade Specification Replace Blade with One Designed For Material Being Cut
Symptom Possible Cause Corrective Action
Belt Tearing/Ripping Pulley Misalignment Align Pulleys
Belt Rolling Off Pulley Pulley Misalignment Align Pulleys
Belt Cracking
Extremely Low Temperature at Startup Warm Machine Before Use
Exposure To Chemicals or Lubricates Locate Source of Containments and Replace Belts.
MAINTENANCE BBM158