Stow RCC130H manual Troubleshooting, Blade Wobbles, Blade Blank Damage, Accelerated V-Belt Wear

TROUBLESHOOTING

BLADE WOBBLES

a)Worn machine components. Determine that machine components including bearings, belts and the arbor shaft are not excessively worn and requiring replacement. Determine that the engine runs smoothly to prevent harmonic vibrations which can result in the blade impacting the work surface with impulse type loads. Inspect the hub body flange and hub flange for material accumulations. Keep all surfaces clean and flat. Always replace any questionable component with a factory replacement part only.

b)Improper blade operating speed. Determine that the blade is being operated within the industry recommended RPM speed range. Engine RPM should be checked periodically with an electronic tachometer to ensure proper operational speed for the blade.

c)Blade is bent. Contact the blade manufacturer. A blade in this condition should be discontinued from use immediately and properly discarded.

BLADE BLANK DAMAGE

a)Cracks in the blade blank. Contact the blade manufacturer. A blade in this condition should be discontinued from use immediately and properly discarded.

b)Blade blank undercutting. Highly abrasive fines are being generated during the sawing process, resulting in an abrading or wearing away of the blank faster than the diamond segments. Blades manufactured with wear resistant blanks can be specified from many manufacturers. Wear resistant blanks may not be the proper solution to the problem. Any blade experiencing this type of wear problem should be carefully inspected in shorter intervals to determine proper structural integrity.

BLADE NOT ROTATING WITH PROPER CONCENTRICITY

a)Worn machine components. Determine that machine components including bearings, belts and the arbor shaft are not excessively worn and requiring replacement. Determine that the engine runs smoothly to prevent harmonic vibrations which can result in the blade impacting the work surface with impulse type loads.

b)Blade arbor hole damaged from previous usage. A blade in this condition should be discontinued from use immediately and properly discarded.

c)Blade is spinning on the arbor shaft. Check the arbor shaft, hub body and hub flange for excessive wear and/or damage. Worn, bent or dirty hub body flange and hub flange will not allow the blade to be properly tightened on the arbor shaft. Properly tighten the arbor shaft nut. Replace any questionable component with a factory replacement part only.

d)Blade matrix composition is too hard for the material being sawed. Utilize a blade with a softer matrix composition.

e)Blade is not properly mounted to the Crack Saw. Determine that the blade is mounted to the proper diameter spindle before tightening the arbor shaft nut. Never depend on the drive pin of the arbor hub to actually drive the blade. The drive pin is simply a safety device to prevent the blade from spinning on the arbor shaft should the nut become loose.

Improper lubrication. See LUBRICATION REQUIREMENTS.

UNEVEN SAWING ACTION

Excessive material build-up on the caster wheel face surface. Remove the material.

Excessive caster wheel bearing wear. Replace the caster wheel.

Excessive axle wear. Replace axle.

ACCELERATED V-BELT WEAR

Misaligned and/or improperly tensioned pulleys. Readjust pulleys and V-belt. See Service section.

Worn pulleys. Replace pulleys as required. See

INSTALLING A REPLACEMENT V-BELT OR PULLEY.

Improper V-belt. Replace with a name brand BX34 series V-belt. Never replace a single belt. Always replace both V-belts at the same time in matched sets.

ACCELERATED BEARING WEAR AND/OF FAILURE

Misaligned and/or improperly tensioned pulleys. readjust pulleys and V-belts. See Service section.

Bent arbor shaft. Replace arbor shaft.

RCC130H-CRACK SAW OPERATION AND PARTS MANUAL REV #1 (11/18/04) PAGE 41